Emerson Fisher MR98LD User manual

MR98 Series
D103588X012
Instruction Manual
January 2015
!!!"#$%&'((')*+,-.(%"/.0
123456'($'%57,/89('%%*('52')*+,-.(%:52'+$'#5
,;<5=$##'(';-$,+52'+$'#5>,+?'%
Figure 1. Typical MR98 Series Backpressure Regulators, Relief and Differential Relief Valves
@ABC51234D
@ABC51234E
@ABC51234D
@ABC51234D
@ABC51234D
@ABC51234D
P1757
P1753

MR98 Series
2




F?,$+,G+'5H.;%-(*/-$.;%
@I9'51234DJ


@I9'51234EJ5


@I9'51234EEJ


@I9'51234D=J


@I9'51234E=J


@I9'51234EE=J




KLM5NB@J
KLO5$;"5L5=N5KPJ
QLM5,;<5K5$;"5L5=N5OR5,;<5OPJ

KSKLO5,;<5O5$;"5L5=N5MR5,;<5PRJ

1,T$0*0569($;)5H,%'5D.,<$;)5B('%%*('5#.(55
@I9'%51234D=:51234E=5,;<51234EE=55
U69($;)56'--$;)5B+*%5D.,<$;)5B('%%*('VUKVUOV
@I9'51234D=569($;)5H,%'5
Gray Cast Iron:
Steel or Stainless steel:
@I9'51234E=569($;)5H,%'5
Gray Cast Iron:
Steel or Stainless steel:
@I9'51234EE=569($;)5H,%'5
Steel or Stainless steel:
1,T$0*05W;+'-5,;<5X*-+'-5B('%%*('52,-$;)




,;<51,-'($,+%UKVUOV


7X=A56WYC H?H)HK
W;" =N
 - - - -   
 15  120 
   250 
   780 

7X=A56WYC Z@[<[D\0
W;" =N
 - - - -    
 15    
     
     
6'-5B('%%*('52,;)'%
See Table 3
B('%%*('52')$%-(,-$.;


1'-,+56',-%J5Class IV
 Class IV
C+,%-.0'(56',-%J Class VI or better
@'09'(,-*('5H,9,G$+$-$'%5#.(5C+,%-.0'(5B,(-%UKVUQV
See Table 5
@'09'(,-*('5H,9,G$+$-$'%5#.(51'-,+5B,(-%UKVUQV
See Table 5
F99(.T$0,-'5]'$)&-%
1234E56'($'%J
1/4 NPT: 
1/2 in. / DN 15: 
3/4 and 1 in. / DN 20 and 25: 
1-1/2 and 2 in. / DN 40 and 50: 
1234D56'($'%J
1/4 NPT: 
1/2 in. / DN 15: 
3/4 and 1 in. / DN 20 and 25: 




MR98 Series
3
]F2NWN^
_
[,$+*('5-.5#.++.!5-&'%'5$;%-(*/-$.;%5.(5
-.59(.9'(+I5$;%-,++5,;<50,$;-,$;5-&$%5
'`*$90';-5/.*+<5('%*+-5$;5,;5'T9+.%$.;:5

/,*%$;)59(.9'(-I5<,0,)'5,;<59'(%.;,+5
$;a*(I5.(5<',-&"
[$%&'(b5G,/89('%%*('5(')*+,-.(%:5('+$'#5
,;<5<$##'(';-$,+5('+$'#5?,+?'%50*%-5G'5
$;%-,++'<:5.9'(,-'<5,;<50,$;-,$;'<5
$;5,//.(<,;/'5!$-&5#'<'(,+:5%-,-'5,;<5
+./,+5/.<'%:5(*+'%5,;<5(')*+,-$.;%5
,;<5C0'(%.;5B(./'%%51,;,)'0';-5
2')*+,-.(5@'/&;.+.)$'%:5W;/"55
UC0'(%.;cV5$;%-(*/-$.;%"
W#5,5+',85<'?'+.9%5.(5$#5-&'5.*-+'-5
/.;-$;*,++I5?';-%5),%:5%'(?$/'5-.5-&'5
*;$-50,I5G'5('`*$('<"5[,$+*('5-.5/.(('/-5


$;%-,++5.(5%'(?$/'5-&'5*;$-"
W;%-,++,-$.;:5.9'(,-$.;5,;<50,$;-';,;/'5

9'(%.;50,I5('%*+-5$;5$09(.9'(5,<a*%-0';-5
,;<5*;%,#'5.9'(,-$.;"5C$-&'(5/.;<$-$.;5
0,I5('%*+-5$;5'`*$90';-5<,0,)'5.(5

!&';5$;%-,++$;):5.9'(,-$;)5,;<50,$;-,$;$;)5
-&'5123456'($'%5G,/89('%%*('5(')*+,-.(%:5
('+$'#5,;<5<$##'(';-$,+5('+$'#5?,+?'%"
W;-(.<*/-$.;
6/.9'5.#5-&'51,;*,+






B(.<*/-5='%/($9-$.;





@I9'51234D



@I9'51234E



@I9'51234EE



@I9'51234D=


@I9'51234E=



@I9'51234EE=




MR98 Series

6B2WN^
6B2WN^
1C@FD5=WFBE2F^16 1C@FD5=WFBE2F^1
^F6\C@ ^F6\C@
[X25@ABC51234E5]W@E5@]X51C@FD5=WFBE2F^165
UFD6X5@ABWHFD5X[5@ABC651234EE5FN=51234D5CZHCB@5[X25
9%$5L5R"K5@X5R"M45G,(52FN^CV
9%$5L5R"KM5@X5R"M45G,(52FN^CV5
]W@E5XNC51C@FD5=WFBE2F^1
Figure 2. MR98 Series Operational Schematics
HXN@2XD56B2WN^
=WFBE2F^1
X2W[WHC
>FD>C5BDd^
>CN@
F=ed6@WN^56H2C]
HXN@2XD5DWNC5@FB
@ABC51234E5]W@E5WN@C2NFD5
B2C66d2C52C^W6@2F@WXN
7FH\5>WC]5X[55
KLO5WN"5L5=N5KP5@ABC51234E55
]W@E5CZ@C2NFD55
B2C66d2C52C^W6@2F@WXN
6W=C5FN=5WN@C2NFD5>WC]5X[5
QLM5@X5O5WN"5L5=N5OR5@X5PR55
@ABC51234E5]W@E5CZ@C2NFD55
B2C66d2C52C^W6@2F@WXN
UFD6X5@ABWHFD5X[5@ABC51234D:55
KLO5@X5O5WN"5L5=N5KP5@X5PR57X=WC6V
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE

MR98 Series
5














B($;/$9+'5.#5X9'(,-$.;
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












[X25@ABC651234E=:51234EE=5FN=51234D=5]W@E5@]X51C@FD5
=WFBE2F^16:5F66C17DC5=WFBE2F^15^F6\C@65dN=C25FN=55
F7X>C5@EC51C@FD5=WFBE2F^165F656EX]N5F7X>C
6B2WN^ 1C@FD5=WFBE2F^16
^F6\C@
Figure 2. MR98 Series Operational Schematics (continued)
HXN@2XD56B2WN^
=WFBE2F^1
X2W[WHC
>FD>C5BDd^
DXF=WN^5B2C66d2C5
WNDC@5@FB
EFN=]ECCD
OUTLET PRESSURE
INLET PRESSURE
LOADING PRESSURE
HXN@2XD5DWNC5@FB
@ABC51234E=5]W@E5WN@C2NFD5B2C66d2C52C^W6@2F@WXN @ABC51234E=5]W@E5CZ@C2NFD5B2C66d2C52C^W6@2F@WXN

MR98 Series

7X=A56WYC 7X=A5HXN6@2dH@WXN CN=5HXNNCH@WXN56@ADC
7X=A51F@C2WFD
^(,I5H,%-5W(.;
]HH5.(5DHH56-''+
H[4156-,$;+'%%56-''+UKV
H[Q156-,$;+'%%56-''+UKV
1.;'+b5.(5E,%-'++.Ib5HUKV
  
 





 





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
 












 








Table 1. Types MR98L and MR98LD Regulators Body Constructions
Monel®
Hastelloy®

MR98 Series
7
Table 2. Types MR98H, MR98HD, MR98HH and MR98HHD Regulators Body Constructions
7X=A56WYC 7X=A5HXN6@2dH@WXN CN=5HXNNCH@WXN56@ADC
7X=A51F@C2WFD
^(,I5H,%-5W(.;UOV
]HH5.(5DHH56-''+
H[4156-,$;+'%%56-''+UKV
H[Q16-,$;+'%%56-''+UKV
1.;'+®5.(55E,%-'++.I®5HUKV

  






















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

- continued -
Monel®
Hastelloy®

MR98 Series
8
Table 2. Types MR98H, MR98HD, MR98HH and MR98HHD Regulators Body Constructions (continued)
7X=A56WYC 7X=A5HXN6@2dH@WXN CN=5HXNNCH@WXN56@ADC
7X=A51F@C2WFD
^(,I5H,%-5W(.;
]HH5.(5DHH56-''+
H[4156-,$;+'%%56-''+UKV
H[Q156-,$;+'%%56-''+UKV
1.;'+®5.(5E,%-'++.I®5HUKV
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
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5


Monel®
Hastelloy®

MR98 Series
9
Table 3" MR98 Series Body Sizes, Pressure Ranges and Spring Information
@ABC
7X=A56WYC HXN@2XD55
B2C66d2C52FN^CUKV
6B2WN^5]W2C5
=WF1C@C2
6B2WN^5[2CC5
DCN^@E 6B2WN^51F@C2WFD 6B2WN^5BF2@5
Nd17C2 6B2WN^5HXDX2
W;" =N 9%$) G,( W;" 00 W;" 00



 - - - -
2 to 7       1E392527022 
        
12 to 25        
20 to 38        
 15
2 to 7        
        
12 to 25        
20 to 38        



25
2 to 7     102  1E398927022 
     102   
12 to 25     102   
20 to 38        



25
2 to 7     102  1E3989X0052 
      Stainless steel  
12 to 25     102 Stainless steel  
MR98H

MR98HD
 - - - -
15 to 35       1E392527022 
25 to 75        
        
130 to 200        
 15
15 to 35        
25 to 75        
        
130 to 200        



25
15 to 35     102  1E398927022 
25 to 75     102   
     102   
130 to 200        



25
15 to 35     102  1E3989X0052 
25 to 75      Stainless steel  
     102 Stainless steel  




5 to 35       1E792327092 
        
50 to 100        
75 to 170       1P7888X0022 
MR98HH

MR98HHD
 - - - - 150 to 375     105   
 15 150 to 375     129   


20
 150 to 375        


MR98 Series
10
Figure 3. Installation Schematics for Types MR98LD and MR98HD Relief Valves
2CDWC[5Xd@DC@5FN=5XB@WXNFD5
BWBWN^5@X56A6@C1
DXF=WN^5B2C66d2C
dNHXN@2XDDC=5DX]5B2C66d2C
Bd1B
EW^E5B2C66d2C
HXN@2XDDC=5EW^E5B2C66d2C
@ABC51234E=
@ABC51234D=
DX]5B2C66d2C5U[X25DXF=WN^V
HXN@2XDDC=5EW^E5B2C66d2C

MR98 Series
11
W;%-,++,-$.;
]F2NWN^
_
B'(%.;,+5$;a*(I5.(5%I%-'05<,0,)'50,I5
('%*+-5$#5-&$%5G,/89('%%*('5(')*+,-.(:5
('+$'#5.(5<$##'(';-$,+5('+$'#5?,+?'5$%5
$;%-,++'<5!&'('5%'(?$/'5/.;<$-$.;%5
/.*+<5'T/''<5-&'5+$0$-%5)$?';5.;5

(')*+,-.(5;,0'9+,-'"5
F<<$-$.;,++I:59&I%$/,+5<,0,)'5-.5-&'5
G,/89('%%*('5(')*+,-.(5.(5('+$'#5?,+?'5
0,I5('%*+-5$;59'(%.;,+5$;a*(I5.(59(.9'(-I5
<,0,)'5<*'5-.5'%/,9$;)5.#5,//*0*+,-'<5
),%"5@.5,?.$<5%*/&5$;a*(I5,;<5<,0,)':5
$;%-,++5-&'5G,/89('%%*('5(')*+,-.(5.(5
('+$'#5?,+?'5$;5,5%,#'5+./,-$.;"
d;<'(5';/+.%'<5/.;<$-$.;%5.(5$;<..(%:5
'%/,9$;)5),%50,I5,//*0*+,-'5,;<5G'5,;5

%&.*+<5G'59$9'<5.*-<..(%"
[.(5(')*+,-.(5/.;%-(*/-$.;%5!$-&5,5
%9($;)5/,%'5?';-:5-&'5?';-5%&.*+<5G'5

-.5-&'5,-0.%9&'('"5B(.-'/-5.9';$;)%5
,),$;%-5';-(,;/'5.#5(,$;:5%;.!:5$;%'/-%5
.(5,;I5.-&'(5#.('$);50,-'($,+5-&,-50,I5
9+*)5-&'5%9($;)5/,%'5?';-5.(5?';-5+$;'"

 



 


 

 


 


 









X?'(9('%%*('5B(.-'/-$.;
]F2NWN^
_
X?'(9('%%*($;)5,;I59.(-$.;5.#5-&$%5
'`*$90';-50,I5('%*+-5$;5'`*$90';-5
<,0,)':5+',8%5$;5-&'5('+$'#5?,+?'L
G,/89('%%*('5(')*+,-.(5.(59'(%.;,+5
$;a*(I5<*'5-.5G*(%-$;)5.#59('%%*('S
/.;-,$;$;)59,(-%"5











>';-%5,;<52'+$'#5>,+?'5X*-+'-
]F2NWN^
_
W#5*%$;)5,;5123456'($'%5G,/89('%%*('5
(')*+,-.(:5('+$'#5.(5<$##'(';-$,+5('+$'#5?,+?'5

9'(%.;,+5$;a*(I5,;<59(.9'(-I5<,0,)'5

?';-'<5),%5-&,-50,I5&,?'5,//*0*+,-'<"
@.59('?';-5%*/&5$;a*(I5.(5<,0,)':5
9(.?$<'59$9$;)5.(5-*G$;)5-.5?';-5-&'5
),%5-.5,5%,#':5!'++S?';-$+,-'<5,(',"5F++5
?';-%5%&.*+<5G'58'9-5.9';5-.59'(0$-5#(''5

.9';$;)%5,),$;%-5';-(,;/'5.#5(,$;:5%;.!:5
$;%'/-%5.(5,;I5.-&'(5#.('$);50,-'($,+5-&,-5
0,I59+*)5-&'5?';-5.(5?';-5+$;'"5

MR98 Series
12
7X=A56WYC 6B2WN^5HF6C57XD@6UKV X2W[WHC >FD>C5BDd^5^dW=C 7X@@X15BDd^
W;" =N [-SDG%  [-SDG%  [-SDG%  [-SDG% 




- - - -
15



10 to 13


8 to 11
13 to 18





180 to 200
8 to 11




70 to 90
85 to 100
125 to 150




50 to 58
75 to 90
100 to 125
170 to 200

102 to 122

230 to 271

Table 6. Torque Specifications
Table 4. Maximum Cold Working Pressures of Body Size and Materials(1)(2)
2C^dDF@X25
@ABC 7X=A56WYC
7X=A5FN=5
6B2WN^5HF6C5
1F@C2WFD6
1FZW1d155
WNDC@5B2C66d2CUQV
1FZW1d155
Xd@DC@5B2C66d2C
1FZW1d155
6B2WN^5HF6C5B2C66d2C
9%$) G,( 9%$) G,( 9%$) G,(
 

Steel
Stainless steel
Monel®
Hastelloy® C

150
150
150
150






150
150
150
150





50
125
125
125
125





 

Steel
Stainless steel
Monel®
Hastelloy® C

150
150
150
150






150
150
150
150





50
125
125
125
125





MR98H 

Steel
Stainless steel
Monel®
Hastelloy® C

300
300
300
300
300
300






300
300
300
300
300
300






250
300
300
300
300
300






MR98HD 

Steel
Stainless steel
Monel®
Hastelloy® C

300
300
300
300
300
300






300
300
300
300
300
300






250
300
300
300
300
300






MR98HH 
Steel
Stainless steel
Monel®
Hastelloy® C





















300
300
300
300
300





MR98HHD 
Steel
Stainless steel
Monel®
Hastelloy® C





















300
300
300
300
300








1F@C2WFD @C1BC2F@d2C52FN^C

 
 
 
 
 
 

 
 
 
Stainless steel® or Hastelloy® C 



Table 5. Temperature Capabilities(1)(2)
Hastelloy®
Monel®

MR98 Series
13
@I9'%51234D:51234E5,;<51234EE5

 



 
@I9'%51234D=:51234E=5,;<51234EE=




6&*-<.!;
2'+$'#5>,+?'
 

 

 

 




=$##'(';-$,+5>,+?'55
UB('%%*('SD.,<'<56I%-'0V
 

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
]F2NWN^
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-&'5(')*+,-.(5%9($;)5/,%'59('%%*('59($.(5
-.5$;+'-59('%%*('"5
 








6-,(-*9
N.-'

%&.!5-&'50,T$0*05$;+'-5,;<5-&'5

/.;%-(*/-$.;%"5d%'59('%%*('5),*)'%5
-.50.;$-.(5$;+'-59('%%*(':5.*-+'-5
9('%%*('5,;<5,;I5+.,<$;)59('%%*('5
<*($;)5%-,(-*9"



 
 



 



 

F<a*%-0';-















MR98 Series

 

 




7,/89('%%*('52')*+,-.(
 

 

 



1,$;-';,;/'
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
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,;<5(')*+,-.(%"
=*'5-.5;.(0,+5!',(5.(5<,0,)'5-&,-5
0,I5.//*(5#(.05'T-'(;,+5%.*(/'%:5-&$%5
('+$'#5?,+?'5.(5G,/89('%%*('5(')*+,-.(5
%&.*+<5G'5$;%9'/-'<5,;<50,$;-,$;'<5
9'($.<$/,++I"5@&'5#('`*';/I5.#5$;%9'/-$.;5
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-&'5%'?'($-I5.#5%'(?$/'5/.;<$-$.;%5.(5-&'5
('`*$('0';-5.#5+./,+:5%-,-'5,;<5#'<'(,+5
(*+'%5,;<5(')*+,-$.;%"














[+,;)'5H,956/('!5@.(`*'5W;%9'/-$.;
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

7X=A56WYC @ABC 6B2WN^52FN^C =WFBE2F^151F@C2WFD Nd17C25X[5=WFBE2F^1



 1
 2
 2
 Metal 1
 Metal 2


MR98HHD

 1
 2
 2
Metal 2

  
 1
 2
 2
Metal 2
Table 7. Number of Diaphragms Required

MR98 Series
15
 


 

 

 

=$%,%%'0G+I5-.52'9+,/'5=$,9&(,)055
,;<56',-%
HFd@WXN
1'-,+5<$,9&(,)0%5&,?'5-&$;5%&,(95
'<)'%"5@.5,?.$<5&,;<5/*-%:5G'5/,('#*+5
!&';5&,;<+$;)5-&'5<$,9&(,)0:5
9,(-$/*+,(+I5-&'5<$,9&(,)05'<)'"5




 


[.(5@I9'%51234D=:51234E=5,;<51234EE=J




[.(5@I9'%51234D:51234E5,;<51234EEJ














 




 



 



 
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



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 

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






MR98 Series
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

 



 



 



B,(-%5X(<'($;)







N.-'
W;5-&$%59,(-%5+$%-:59,(-%50,(8'<5NFHC5,('5
$;-';<'<5#.(5/.((.%$.;S('%$%-,;-5%'(?$/'5
,%5<'-,$+'<5$;5-&'5NFHC5W;-'(;,-$.;,+5

X9-$.;,+50,-'($,+%5,('5,?,$+,G+'5-.5

9+',%'5/.;-,/-5I.*(5+./,+56,+'%5X##$/'5
#.(5%9'/$,+5.(<'($;)5$;%-(*/-$.;%"

MR98 Series
17
B,(-%5D$%-
\'I5 ='%/($9-$.;5 B,(-5N*0G'(

  

 
 
 
 


 
 
 
 
  

 
 
 


 
 
 
  
  
 
  

 
 
Hastelloy® 
Monel® 

 
 
 
Hastelloy® 
Monel® 

 
 
 
Hastelloy® 
Monel® 

 
 
 
Hastelloy® 
Monel® 

Monel® 
Hastelloy®
\'I55 ='%/($9-$.;55 B,(-5N*0G'(
 
  

 
 

 
 
Hastelloy® 

 
 
Hastelloy® 

 
 
Hastelloy® 
  
 
  
 
 
Hastelloy® 
Monel® 
  
 
 
Hastelloy® 
Monel® 
  
 
 
Hastelloy® 
Monel® 
  
 
 
Hastelloy® 
Monel® 
 
  
 
 
Hastelloy® 
Monel® 
  
 
 
Hastelloy® 
Monel® 
  
 
 
Hastelloy® 
Monel® 

MR98 Series
18
\'I55 ='%/($9-$.;55 B,(-5N*0G'(
 
  
 
 
Hastelloy® 
Monel® 
 
  

 
 

 
 

 
 

Steel 
Stainless steel 1P7877X0012
  

 
 

 
 

Steel 
 
 
  

Steel 
 

Steel 
 

Steel 1E398725072
Stainless steel 1E3987X0012

Steel 
 
  

Steel 
 

Steel 
 

Steel 
 


Monel® 
Hastelloy®
\'I55 ='%/($9-$.;55 B,(-5N*0G'(
10 Pusher Post
  

 
 
Hastelloy® 
Monel® 

 
 
Hastelloy® 
Monel® 

 
 
Hastelloy® 
Monel® 

 
 
Hastelloy® 
Monel® 
  

 
 
Hastelloy® 
Monel® 

 
 
Hastelloy® 
Monel® 

 
 
Hastelloy® 
Monel® 

 
 
Hastelloy® 
Monel® 
  See Table 3
  
  
 
  
 
 
 
  
 
 
 
 

MR98 Series
19
\'I55 ='%/($9-$.;55 B,(-5N*0G'(
 

 

 
 

 
 
 
  
 
 
 
  
 

 
 

 
 
 
  
 
 


 
 

 
 

 
 
  

 
 
 

 
 

 
 

 
 
 

 
 
 
 


Monel® 
Hastelloy®
 
  
 
 
 
 
  
 
 
 
  
 
 
 
  
 
  
 
  


 
 
 


 
 
 



 
 
 

 
 
 

®
® 

 
 
 


 
 
 
 
 
  
 
 
\'I55 ='%/($9-$.;55 B,(-5N*0G'(

MR98 Series
20
 
  
 
 
  
 
 
  

 
 
Hastelloy®  
Monel® 
 
  
 
 
 
  
 
  
 
 
  
  
 
Hastelloy®  
  
  
 
Hastelloy®  
  
  
 
Hastelloy®  
 
  
  
 
  
  
 
Hastelloy®  
  
 
 
Hastelloy®  
25 Seat Retainer
  
 
 
Hastelloy®  
\'I55 ='%/($9-$.;55 B,(-5N*0G'(


Monel® 
Hastelloy®
 

 
 
  
 
 
  
 
 
 
  
 

 
 
 
  


 
 
®
®  


 
 
®
®  


 
 
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®  


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 
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®  
 
 
   
   
 
  

 
 
 

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