Midland A-1076 Series Instruction manual

P/N: A-1076/A-1281, Rev. 2.1
Issue Date: April 10, 2018
Supersedes: A-1076/A-1281, Rev. 2
Internal-Style Pressure Relief Valve
A-1076/A-1281 Series
Installation, Operation & Maintenance (IOM) Manual
Manual content is subject to change.
Visit www.midlandmfg.com for latest manual revision and revision history.

!
A-1076/A-1281, Rev. 2.1
Page 2 of 40
Manual content is subject to change.
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Table of Contents
"!#$%&'()*+,-!(,.!/(0$)1!#$2&*3$4$,)-!55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!6!
!#$%&'()*+,-!55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!6!
!/(0$)1!7(3,*,%-!(,.!83$9(&)*+,-!5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!6!
:!;,)3+.&9)*+,!5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!<!
!=('>$!?$)(*'-!555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!<!
@!=('>$!;,-)(''()*+,!55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!AB!
!;,-)(''()*+,!83+9$.&3$!(,.!#$9+44$,.$.!C++'-!555555555555555555555555555555555555555555555555555555555555555555!AB!
!D$(E!;,-F$9)*+,!555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!AG!
!=('>$!HF$3()*+,!I+)$-!(,.!83$9(&)*+,-!5555555555555555555555555555555555555555555555555555555555555555555555555555555!AG!
J!=('>$!K&('*0*9()*+,!555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!A6!
!=('>$!?*-(--$4L'1!(,.!#$9+44$,.$.!C++'-!5555555555555555555555555555555555555555555555555555555555555555555555!A6!
!M+4F+,$,)!;,-F$9)*+,!5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!AN!
!=('>$!#$(--$4L'1!(,.!#$9+44$,.$.!C++'-!55555555555555555555555555555555555555555555555555555555555555555555555!GO!
!C$-)*,%!83+9$--!55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!6B!
!=('>$P/$))*,%!Q.R&-)4$,)!83+9$.&3$!555555555555555555555555555555555555555555555555555555555555555555555555555555555555!6G!
!8+-)PC$-)!83+9$.&3$!5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!6S!
T!#+&)*,$!U(*,)$,(,9$!55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!6O!
!#+&)*,$!#$F(*3!83+9$.&3$55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555!6O!
V!W4$3%$,91!#$-F+,-$!0+3!D$(E*,%!=('>$!55555555555555555555555555555555555555555555555555555555555555555555555555555555555555!6N!
!X+''+Y!Q''!#+&)*,$!U(*,)$,(,9$!83+9$.&3$-!5555555555555555555555555555555555555555555555555555555555555555555555555!6N!
!

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A-1076/A-1281, Rev. 2.1
Page 3 of 40
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1!Regulations and Safety Requirements
1.1!Regulations
U*.'(,.!*,)$3,('P-)1'$!F3$--&3$!3$'*$0!>('>$-!(3$!&-$.!*,!9+,)(9)!Y*)Z!(!>(3*$)1!+0!F3+.&9)-[!4(,1!+0!YZ*9Z!(3$!Z(\(3.+&-!
4()$3*('-!(,.!9+&'.!9(&-$!-$3*+&-!*,R&31!+3!.(4(%$!*0!4*-Z(,.'$.5!CZ$!(99$F)(,9$!(,.!)3(,-F+3)()*+,!+0!F3+.&9)-!(3$!
3$%&'()$.! L1! )Z$! ?HC! (,.!QQ#! *,! )Z$! ]5/5Q5[! (,.! *,! M(,(.(! L1! MCM! (,.! C3(,-F+3)! M(,(.(5! #$%&'()*+,-! +0! +)Z$3!
%+>$3,4$,)('!L+.*$-!4&-)!L$!9+4F'*$.!Y*)Z!0+3!-)()*+,(31!(,.!4+L*'$!(FF'*9()*+,-5!Q''!F$3-+,,$'!-Z+&'.!L$!0(4*'*(3!Y*)Z!
(,.!0+''+Y!)Z$-$!3$%&'()*+,-5!I+)Z*,%!*,!)Z$-$!*,-)3&9)*+,-!*-! *,)$,.$.!)+!9+,0'*9)!Y*)Z!+3!-&F$3-$.$!)Z$-$!3$%&'()*+,-5!
CZ$!*,0+34()*+,!*,!)Z*-!.+9&4$,)!Y(-!%()Z$3$.!03+4!E,+Y'$.%$(L'$!-+&39$-5!^+Y$>$3[!U*.'(,.!U(,&0(9)&3*,%!4(E$-!
,+!3$F3$-$,)()*+,-!+3!%&(3(,)$$-!(L+&)!*)-!(99&3(91!+3!9+4F'$)$,$--[!(,.!(--&4$-!,+!'*(L*'*)1!0+3!)Z*-!*,0+34()*+,5!!
/F$9*0*9()*+,-!(3$!-&LR$9)!)+!9Z(,%$!Y*)Z+&)!,+)*9$5!
CZ*-!>('>$!-Z+&'.!+,'1!L$!*,-)(''$.[!+F$3()$.!(,.!4(*,)(*,$.!L1!2&('*0*$.!F$3-+,,$'5!#$(.!)Z$-$!*,-)3&9)*+,-!9(3$0&''1!
L$0+3$!F3+9$$.*,%5!
HF$3()*+,!+0!)Z$!>('>$!4&-)!9+,0+34!)+!(''!(FF'*9(L'$!-F$9*0*9()*+,-!03+4!CM[!QQ#[!?HC[! MX#!_8(3)-!A`656A[!A`S5<`[!
$)95a!(,.!+)Z$3!%+>$3,4$,)('!L+.*$-[!('+,%!Y*)Z!)Z$!+F$3()*,%!*,-)3&9)*+,-!+0!1+&3!9+4F(,15!
1.2!Safety Warnings and Precautions
8'$(-$!9(3$0&''1!3$(.!$(9Z!+0!)Z$!0+''+Y*,%!Y(3,*,%-!(,.!9(&)*+,-!F3*+3!)+!F$30+34*,%!(,1!Y+3E5!
!
WARNING:!Toxic Hazard.!Q'Y(1-!&-$!$b)3$4$!9(&)*+,! (,.!F3+F$3!$2&*F4$,)!YZ$,!*,>+'>$.!Y*)Z!Z(\(3.+&-!
4()$3*('-5!C+!(>+*.!$bF+-&3$!)+!)+b*9!+3!Z(\(3.+&-!4()$3*('-[!4(E$!-&3$!)Z$!)(,E!9(3!*-!$4F)1!(,.!9'$(,[!(,.!
)Z()!)Z$!Y+3E!(3$(!*-!03$$!+0!Z(\(3.+&-!9Z$4*9('-!L$0+3$!3$4+>*,%!+3!*,-)(''*,%!(,1!>('>$5!
•!Wear protective clothing and equipment suitable for withstanding the materials to which you
may be exposed
•!Position yourself on the upwind side of the valve when possible
•!Work in a well-ventilated area
•!Work with a partner who can help you in the event of an emergency
•!Follow approved safety precautions for hazardous or toxic materials
•!Obtain MSDS sheets for all the commodities used with the associated valve
!
!
WARNING:!Spring-Loaded Assembly. ?&3*,%! >('>$P-F3*,%! .*-(--$4L'1[! )Z$! >('>$! 9+,)(*,-! -F3*,%-! &,.$3!
'+(.5! DO NOT ())$4F)! )+! .*-(--$4L'$! )Z$! >('>$! Y*)Z+&)! 0*3-)! 3$(.*,%! )Z$-$! *,-)3&9)*+,-! +3! *,R&31! 4(1! 3$-&')5!
/F3*,%!F3$--&3$!4&-)!L$!(.R&-)$.!)+!)Z$!4*,*4&4!(,.!(!L$,9Z!9'(4F!+3!F3$--!&-$.!0+3!.*-(--$4L'15!
!
!
WARNING:!Spring-Loaded Assembly: CZ$-$! *,)$3,('P-)1'$! F3$--&3$! 3$'*$0! >('>$-! (3$! -F3*,%P'+(.$.!
(--$4L'*$-!Y*)Z!(!'(3%$!(4+&,)!+0!-)+3$.!F+)$,)*('!$,$3%1!*,!)Z$!-F3*,%5!^(,.'$!Y*)Z!9(3$!)+!(>+*.!.(4(%$!)+!)Z$!
>('>$!-)$4[!YZ*9Z!9+&'.!3$-&')!*,!L3$(E(%$!(,.!$R$9)$.!F*$9$!F(3)-5!
7Z$,!(--$4L'*,%!+3!.*-(--$4L'*,%!)Z$!>('>$[!?H!IHC!F+-*)*+,!+,$-$'0!.*3$9)'1!*,!03+,)!+0!)Z$!-F3*,%!(,.!-)$45!
;,-)$(.[! F+-*)*+,! +,$-$'0! )+!)Z$!-*.$!(Y(1!03+4!)Z$! >('>$5!],$bF$9)$.!9+4F+,$,)!0(*'&3$!+0!)Z$!>('>$!-)$4!+3!
-F3*,%!L3$(E(%$!4(1!9(&-$!(!-&..$,!$,$3%1!3$'$(-$!)Z()!9(,!.*-9Z(3%$!9+4F+,$,)!F(3)-!(!-Z+3)!.*-)(,9$!*,!(,!
&,9+,)3+''$.!4(,,$35!8$3-+,('!*,R&31!4(1!L$!(!3$-&')5!
!
WARNING
WARNING
WARNING

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A-1076/A-1281, Rev. 2.1
Page 4 of 40
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Visit midlandmfg.com for latest manual revision and revision history.
!
CAUTION:!Valve Leakage. ;4F3+F$3! >('>$P)+,%&$! -$()*,%! *,! )Z$! 0'(,%$! %3++>$[! '++-$! ,&)-! (,.! .(4(%$.!
%(-E$)-!4(1!3$-&')!*,!'$(E-!()!)Z$!>('>$P4+&,)*,%!R+*,)5!
!
CAUTION:!Incorrect Spring Setting. I$>$3!(.R&-)!)Z$!-F3*,%!9+4F3$--*+,!+0!(!>('>$!YZ*'$!*)!*-!4+&,)$.!+,!)Z$!
>$--$'!9+>$3!F'()$!+3!*,9+33$9)!-$))*,%-!4(1!3$-&')5!
!
CAUTION:!Valve/Seat Damage. 7*)Z!-F3*,%!F3$--&3$!3$4+>$.!03+4!)Z$!>('>$!-)$4[!)Z$!-)$4!9(,!$(-*'1!-Z*0)[!
(''+Y*,%!)Z$!-$('*,%!$.%$-!+0!)Z$!-)$4!)+!9+,)(9)!4$)('!-&30(9$-!+3!)+!*4F3+F$3'1!9+,)(9)!)Z$!>('>$!-$()5!7Z$,!
'(1*,%!)Z$!>('>$!+,)+!)Z$!Y+3EL$,9Z[!E$$F!(!9+,-)(,)!'*0)*,%!0+39$!+,!)Z$!>('>$!-)$4!(L+>$!)Z$!-F3*,%!)+!E$$F!)Z$!
>('>$!-$()$.5!D(1!)Z$!(--$4L'1!.+Y,!+,!*)-!-*.$!9(3$0&''1!(,.!*44$.*()$'1!%3(-F!)Z$!+FF+-*)$!_-Z+3)a!$,.!+0!)Z$!
-)$4!)+!F3$>$,)!>('>$c-$()!.(4(%$5!
!
CAUTION:!Valve-Stem Eccentricity5! Wb9$--*>$! >('>$P-)$4! $99$,)3*9*)1! Y*''! 9(&-$! L*,.*,%! )Z()! 9(,! 3$-&')! *,!
Z*%Z!-)(3)P)+P.*-9Z(3%$!F3$--&3$!-$))*,%-[!3$.&9$.!>('>$!9(F(9*)1!(,.c+3!'+Y!>(F+3P)*%Z)!F3$--&3$-5!
!
CAUTION:!Valve-Stem Failure. M3(9E-! (,.!9+33+-*+,!+0!F3$--&3$!3$'*$0!>('>$!-)$4-!9(,!3$-&')!*,!-)$4!0(*'&3$!
(,.!&,9+,)3+''$.!>$,)*,%5!
!
CAUTION:!Valve-Stem Straightening. /)3(*%Z)$,*,%! +0! )Z$! -)$4! L1! L$,.*,%! *)! *,! (! F3$--! 4(1! 3$-&')! *,! )Z$!
L&*'.&F!+0!&,$>$,!-)3$--$-!*,!)Z$!-)$4[!YZ*9Z!4(1!3$-&')!*,!>('>$!4('0&,9)*+,5!
!
CAUTION:!Valve-Spring Failure. ?$0$9)-!*,!9+*'!-F3*,%-[!-&9Z!(-!93(9E-!(,.!9+33+-*+,!F*)-[!9(,!(9)!(-!-)3$--!
9+,9$,)3()+3-5!X(*'&3$!)+!.$)$9)!)Z$-$!.$0$9)-!9(,!3$-&')!*,!9+*'P-F3*,%!L3$(E(%$!(,.!&,9+,)3+''$.!>('>$!>$,)*,%5!
!
CAUTION:!Deficient Valve Travel. M+*'!-F3*,%-!)Z()!Z(>$!)(E$,!(!d-$)[e!3$-&')*,%!*,!(,!&,.$3-*\$.!03$$PZ$*%Z)[!
Y*''!,+)!(''+Y!)Z$! >('>$! )+!+F$,!0&''15!CZ$!-F3*,%! -Z+&'.!,+)!L$!L+Y$.! 4+3$! )Z(,!AcSf! YZ$,! *,! )Z$! (--$4L'$.!
F+-*)*+,5! g+Y*,%! *,! $b9$--! +0! )Z*-! (4+&,)! 9(,! 9(&-$! )Z$! -F3*,%! )+! 3&L! (%(*,-)! )Z$! *,-*.$! Y(''! +0! )Z$! ,+\\'$! +3!
%&*.$!)&L$!(,.!(.>$3-$'1!(00$9)!)Z$!F3$--&3$!-$))*,%-5!;0!(,1!+0!)Z$!.$0$9)-!4$,)*+,$.!(L+>$!(3$!+L-$3>$.[!)Z$!
-F3*,%!9(,,+)!L$!3$F(*3$.!(,.!4&-)!L$!3$F'(9$.5!
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION

!
A-1076/A-1281, Rev. 2.1
Page 5 of 40
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!
CAUTION:!Valve Sticking. ;0!)Z$!-F3*,%!%&*.$!L*,.-!*,!)Z$!%&*.$!)&L$!_,+\\'$a[!)Z$!>('>$!4(1!-)*9E!*,!)Z$!+F$,!
F+-*)*+,!+3!L$! F3$>$,)$.!03+4!+F$,*,%5!Q'Y(1-!$,-&3$! 03$$!)3(>$'!+0!)Z$!-F3*,%!%&*.$!L$0+3$!3$(--$4L'*,%!)Z$!
>('>$5!
!
!
CAUTION:!Tongue Damage. Q! .(4(%$.! >('>$!)+,%&$! 4(1! F3$>$,)!F3+F$3!-$('*,%! +,!)Z$!)(,EP9(3!4+&,)*,%!
(,.!3$-&')!*,!'$(E(%$!+0!)Z$!)(,E!9+,)$,)-5!
!
CAUTION:!Field Repair. CZ$!3$F(*3! F3+9$.&3$!0+3! '$(E*,%!>('>$-!*,!)Z$!0*$'.!*-!*,)$,.$.! +,'1!(-!(!)$4F+3(31!
3$F(*3!)+! %$)! )Z$! 9(3!)+! (,! &,'+(.*,%! .$-)*,()*+,5!H,9$! )Z$! F3+.&9)! *-! &,'+(.$.! (,.! F3$--&3$! *-!3$'*$>$.[! )Z$!
>('>$!-Z+&'.!L$!3$4+>$.!0+3!(!9+4F'$)$!*,-F$9)*+,!(,.!3$2&('*0*9()*+,5!
!
CAUTION:!O-Ring Replacement.!M+,.&9)*,%!)Z*-!F3+9$.&3$!4(1!L$!Z(\(3.+&-!_.$F$,.*,%!+,!)Z$!9+44+.*)1!
*,! )Z$! )(,E! 9(3a5! U(*,)$,(,9$! F$3-+,,$'! -Z+&'.! L$! 9(3$0&''1! )3(*,$.! L$0+3$! L$*,%! F$34*))$.! )+! F$30+34! )Z$!
F3+9$.&3$!L$'+Y!+,!(!F3$--&3$!3$'*$0!>('>$!4+&,)$.!+,!(!F3$--&3*\$.!)(,E5!
!
CAUTION:!Valve Discharge. 7Z$,! )Z$!HP3*,%! 3$)(*,$3!9(F! *-!3(*-$.! &F[!)Z$3$!Y*''!L$!(! -*%,*0*9(,)! (4+&,)!+0!
F3+.&9)!.*-9Z(3%*,%5!^(>$!$4$31!F(F$3[!(!9'$(,*,%!9'+)Z[!3$F'(9$4$,)!HP3*,%!3$)(*,$3!9(F!_Y*)Z!$F+b*$.!HP3*,%-a!
(,.! -*'*9+,$! %3$(-$! _)1F*9(''1! h1)+b! i8DGBS! +3! $2&*>('$,)a! 9'+-$! ()! Z(,.5! ]-$! (! YZ$$'! F&''$3[! +3! )Y+! _Ga!
-93$Y.3*>$3-!AjBk!(F(3)[!)+!2&*9E'1!.*-'+.%$!)Z$!HP3*,%!3$)(*,$35!
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION

!
A-1076/A-1281, Rev. 2.1
Page 6 of 40
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Visit midlandmfg.com for latest manual revision and revision history.
2!Introduction
CZ$! QPAB`<cQPAGjA!/$3*$-!;,)$3,('P/)1'$!83$--&3$!#$'*$0!=('>$-!F3+>*.$!0'+Y!3()$-!-&*)(L'$!0+3!9+44+.*)*$-!3$2&*3*,%!
3$'()*>$'1!'+Y!0'+Y!3()$-5!
•!^*%ZP2&('*)1!-)(*,'$--P-)$$'!9+,-)3&9)*+,!
•!?&('!HP3*,%!.$-*%,!)+!4*,*4*\$!F+)$,)*('!'$(E!F()Z-!)+!)Z$!()4+-FZ$3$!
•! W(-1P)+P3$F'(9$!-$('!.$-*%,!0+3!$(-$!+0!4(*,)$,(,9$[!*,9'&.*,%!YZ*'$!*,!-$3>*9$!
•!D+YPF3+0*'$!.$-*%,!
•! Q>(*'(L'$!Y*)Z!+F)*+,('!0'&$-!
2.1!Valve Details
VALVE MODEL
NET FLOW AREA (IN2)
FLOW RATE (SCFM)
VALVE PRESSURE SETTING (PSIG)
QPAB`<!/$3*$-!
B5<j`!
N<O!
`O!
QPAGjA!/$3*$-!
B5<j`!
666G!
GjB5O!
C(L'$!GPA!=('>$!/F$9*0*9()*+,-!
!
X*%&3$!GPA!=('>$!Y*)Z!83+)$9)*>$!X'&$!l!M(F!Q--$4L'1!

!
A-1076/A-1281, Rev. 2.1
Page 7 of 40
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!
X*%&3$!GPG!=('>$!Y*)Z!83+)$9)*>$!X'&$!l!M(F!Q--$4L'1!_C+F!=*$Ya!
!
X*%&3$!GP6!=('>$!Y*)Z!83+)$9)*>$!X'&$!l!M(F!Q--$4L'1!_;-+4$)3*9!=*$Ya!

!
A-1076/A-1281, Rev. 2.1
Page 8 of 40
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!
X*%&3$!GPO!=('>$!Y*)Z+&)!X'&$cM(F!Q--$4L'1!_C+F!=*$Ya!
!
X*%&3$!GP<!=('>$!Y*)Z+&)!X'&$cM(F!Q--$4L'1!_;-+4$)3*9!=*$Ya!
!

!
A-1076/A-1281, Rev. 2.1
Page 9 of 40
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ITEM
QTY.
PART NAME
MATERIAL
A-1076 PART NO.
A-1281 PART NO.
A!
A!
CH8!i];?W!
/CQ;IDW//!/CWWD!
ABP6GP//!
ABP6GP//!
G!
A!
/CWU!
/CQ;IDW//!/CWWD!
ABPG`P//!
ABPG`P//!
6!
A!
#WCQ;IW#!
/CQ;IDW//!/CWWD!
ABP6P//!
ABP6P//!
S!
A!
=QD=W!gH?m!
/CQ;IDW//!/CWWD!
ABPS`P//!
ABPS`P//!
O!
A!
/8#;Ii!
/CQ;IDW//!/CWWD!
ABP`NP//!
ABP6BSP//!
<!
A!
XHDDH7W#!
/CQ;IDW//!/CWWD!
ABP<P//!
ABP<P//!
`!
A!
/8#;Ii!i];?W!C]gW!
/CQ;IDW//!/CWWD!
ABP`P//!
ABP`P//!
j!
A!
CH8!DHMhI]C!
/CQ;IDW//!/CWWD!
ABPjP//!
ABPjP//!
N!
A!
7Q/^W#!
IWH8#WIW!
ABPNPIW!
ABPNPIW!
AB!
A!
/WQC!HP#;Ii!
M^WU#Qn!OBOA!
ABPABPMnPOBOA!
ABPABPMnPOBOA!
AA!
A!
/CWU!HP#;Ii!
M^WU#Qn!OBOA!
ABPAAPMnPOBOA!
ABPAAPMnPOBOA!
AG!
A!
Q?o]/CUWIC!I]C!
/CQ;IDW//!/CWWD!
ABPAGP//!
ABPAGP//!
A6!
A!
DHMhI]C!
/CQ;IDW//!/CWWD!
ABPA6P//!
ABPA6P//!
AS!
G!
/CQI?HXX!
/CQ;IDW//!/CWWD!
ABPGjP//!
ABPGjP//!
AO!
G!
DHMhI]C!
/CQ;IDW//!/CWWD!
ABPGNP//!
ABPGNP//!
A<!
S!
7;#W!/WQD!h;C!
/CQ;IDW//!
/CWWDcDWQ?!
GGP`GP8g!
GGP`GP8g!
A`!
G!
iQ/hWC!
8CXW!
ABPA`PCX!
ABPA`PCX!
Aj!
A!
IQUW!8DQCW!
/CQ;IDW//!/CWWD!
AGP`jP//!
AGPGjGP//!
AN!
G!
?#;=W!/M#W7!
/CQ;IDW//!/CWWD!
`<6PAAP//!
`<6PAAP//!
GB!
A!
XD]WG!
/CQ;IDW//!/CWWD!
ABPGSSP//!
ABPGSSP//!
GA!
A!
MQ8!l!jP;IM^!M^Q;I!Q//WUgDmG!
8HDmWC^mDWIWc//!
ASP6AGP8WP//!
ASP6AAP8WP//!
GG!
A!
/]88DWUWICQD!IQUW!8DQCWG!
/CQ;IDW//!/CWWD!
AGP`NBSP//!
AGP`NBOP//!
C(L'$!GPG!=('>$!M+4F+,$,)!?$)(*'-!
NOTES:
A5! Q')$3,()*>$!4()$3*('!(>(*'(L'$5!
G5!X+3!p/BA!(--$4L'*$-!+,'15!
!

!
A-1076/A-1281, Rev. 2.1
Page 10 of 40
Manual content is subject to change.
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3!Valve Installation
I$Y! >('>$-! (3$! )$-)$.[! (.R&-)$.! (,.! -$('$.! ()! U*.'(,.5! ;0! (! ,$Y! >('>$! Z(-! L$$,! '$0)! *,! *)-! +3*%*,('! F(9E(%*,%[! *-!
&,.(4(%$.!(,.!*-!,+)!4+3$!)Z(,!-*b!_<a!4+,)Z-!+'.[!*)!4(1!L$!*,-)(''$.!+,!(!)(,E!9(3!Y*)Z+&)!3$)$-)*,%!+3!3$9('*L3()*+,5!
83*+3!)+!*,-)(''()*+,[!$,-&3$!)Z()!)Z$!>('>$!3$4(*,-!9'$(,!(,.!)Z$!%(-E$)P-$('*,%!-&30(9$-!(3$!,+)!.(4(%$.5!!
3.1!Installation Procedure and Recommended Tools
SAE Wrench
Component(s)/Description
APAcSe!!
U+&,)*,%!/)&.!I&)-!
Other Tools, Supplies, and Equipment:
C+32&$!73$,9Z!
U+&,)*,%!/)&.!I&)-!
7*3$!g3&-Z!
C+!M'$(,!)Z$!=('>$-!(,.!M+>$3P8'()$!/$('*,%!/&30(9$-!
D*,)PX3$$!M'+)Z!
C+!M'$(,!/$('*,%!/&30(9$-!
C(L'$!6PA!#$9+44$,.$.!C++'-!0+3!=('>$!Q--$4L'1!
!
NOTICE:!M+,-&')!%(-E$)!4(,&0(9)&3$3!(,.!U*.'(,.!U(,&0(9)&3*,%!0+3!)+32&$!3$2&*3$4$,)-!(-!4(b!)+32&$!
4(1!>(31!L1!>('>$!4+.$'5!?+!,+)!$b9$$.!GBB!0)P'L5!
65A5A! #$4+>$!)Z$!+'.!>('>$!(,.!)Z$,!*,-$3)!(!-+0)!3&LL$3!F'&%!*,)+!)Z$!)(,E!+F$,*,%!)+!F3$>$,)!.$L3*-!03+4!$,)$3*,%!
)Z$!)(,E!.&3*,%!9'$(,*,%!+0!)Z$!>('>$P4+&,)*,%!%3++>$!(,.!-)&.-!+,!)Z$!4(,Y(1!9+>$3!F'()$5!
65A5G! ]-*,%!(!Y*3$!L3&-Z[!L3&-Z!)Z$!)Z3$(.-!+0!)Z$!4+&,)*,%!-)&.-!)+!3$4+>$!3&-)!+3!-9('$5!I&)-!-Z+&'.!4+>$!03$$'1!
+,!9'$(,!-)&.-5!/)&.-!-Z+&'.!,+)!$bZ*L*)!$b9$--*>$!9+33+-*+,5!;,-F$9)!)Z3$(.-!0+3!(,1!-*%,!+0!$b9$--*>$!Y$(3[!
9+33+-*+,[!F*))*,%!+3!+)Z$3!.$0$9)-5!;0!(,1!(3$!0+&,.[!)Z$!F(3)!*-!3$R$9)(L'$!(,.!-Z+&'.!L$!3$F'(9$.5!
65A56! #$4+>$!(,.!.*-9(3.!(''!&-$.!%(-E$)!4()$3*('5!
!
CAUTION: Groove Damage.!;,!+3.$3!)+!(>+*.!%3++>$!.(4(%$[!.+!,+)!-93()9Z!)Z$!4$)('!*,!)Z$!L+))+4!+0!
)Z$!%3++>$!YZ$,!3$4+>*,%!)Z$!+'.!%(-E$)5!
65A5S! ]-*,%!(!'*,)P03$$!9'+)Z!(,.!(FF3+F3*()$!9'$(,*,%!-+'>$,)[!Y*F$!9'$(,!)Z$!>('>$!
(,.! 9+>$3PF'()$! -$('*,%! -&30(9$-! (,.! )Z$! 4+&,)*,%P-)&.! )Z3$(.-5! ;,-F$9)!
)Z3$(.-!0+3!(,1!-*%,!+0!$b9$--*>$!Y$(3[!9+33+-*+,[!F*))*,%!+3!+)Z$3!.$0$9)-5!;0!
(,1!(3$!0+&,.[!)Z$!F(3)!*-!3$R$9)(L'$!(,.!-Z+&'.!L$!3$F'(9$.5!
!
X*%&3$!6PA!i(-E$)P/$('*,%!/&30(9$!
NOTICE
CAUTION
i(-E$)P
-$('*,%!
-&30(9$!

!
A-1076/A-1281, Rev. 2.1
Page 11 of 40
Manual content is subject to change.
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65A5O!X+3! )+,%&$P(,.P%3++>$! 4+&,)*,%-[! $b(4*,$! )Z$! -*.$-! +0! )Z$! %3++>$5! CZ$! >('>$! )+,%&$! 0*)-! )*%Z)'1! *,)+! )Z$!
%3++>$[!(,1!F$$,*,%P+>$3!+0!)Z$!$.%$-!+0!)Z$!%3++>$!4(1!4(E$!*)!.*00*9&')!)+!F3+F$3'1!0*)!)Z$!>('>$!)+,%&$!*,)+!
)Z$!%3++>$5!;0!)Z$!-*.$-!+0!)Z$!%3++>$!(3$!F$$,$.!+>$3[!4(E$!9+33$9)*+,-!)+!4$$)!)Z$!QQ#q-!%3++>$!)+'$3(,9$-5!
65A5<! ;,-)(''! )Z$! ,$Y! %(-E$)5! W,-&3$! *)! *-! 0&''1! -$()$.5! 7Z$,! (! %3++>$! %(-E$)! *-! 0&''1! -$()$.[! AcA<f! +0! 03$$! -F(9$!
-Z+&'.!3$4(*,!(L+>$!)Z$!%(-E$)!)+!F$34*)!'+9()*,%!(,.!$,)31!+0!)Z$!>('>$!)+,%&$5!
!
CAUTION:!?+!,+)!&-$!(!-Z(3F!)++'!)+!F3$--!)Z$!,$Y!%(-E$)!*,)+!F'(9$!+3!%(-E$)!.(4(%$!4(1!3$-&')5!
65A5`!X+3! )+,%&$P(,.P%3++>$! 4+&,)*,%-[! *,-F$9)! )Z$! )+,%&$! +0! (! ,$Y[! 3$9+,.*)*+,$.! +3! 3$)$-)$.! >('>$! L1! 3&,,*,%!
1+&3!0*,%$3,(*'!(3+&,.!*)-!*,,$3!(,.!+&)$3!$.%$-!)+!9Z$9E!0+3!.(4(%$5!CZ$!)+,%&$!.*4$,-*+,-!Z(>$!.*(4$)$3!
)+'$3(,9$-!+0!rB5BB6f[!)Z&-!(,1!$b9$--!4()$3*('!+,!)Z$-$!.*(4$)$3-!Y*''!4(E$!*)!.*00*9&')!)+!0*)!)Z$!)+,%&$!*,)+!
)Z$!%3++>$5!;0!)Z$!)+,%&$!*-!F$$,$.!+>$3[!3$4+>$!$b9$--!4()$3*('!)+!4$$)!QQ#!)+,%&$!)+'$3(,9$-5!
!
CAUTION:!C+!F3$>$,)!%3++>$!.(4(%$[!.+!,+)!*,-)(''!(!>('>$!Z(>*,%!.(4(%$.!-$('*,%!-&30(9$-5!
65A5j!#$4+>$!)Z$!3&LL$3!F'&%!03+4!)Z$!9+>$3!F'()$5!
65A5N! 8+-*)*+,! )Z$! >('>$! %$,)'1! *,)+! )Z$! 4+&,)*,%5! Q'*%,! )Z$! L+.1! Z+'$-! +>$3! )Z$! -)&.-! (,.! '+Y$3! )Z$! >('>$! YZ*'$!
F+-*)*+,*,%!)Z$!>('>$!)+,%&$!*,!)Z$!9+>$3PF'()$!%3++>$5!
!
CAUTION: Tongue Not in Cover-Plate Groove.!=$3*01!)Z()!)Z$!>('>$!)+,%&$!0*)-!*,)+!)Z$!9+>$3PF'()$!
%3++>$5!;)!4&-)!L$!-+!$,%(%$.!L$0+3$!9+,)*,&*,%!Y*)Z!)Z$!,$b)!-)$F!+3!>('>$!.(4(%$!4(1!3$-&')5!
CAUTION
CAUTION
CAUTION

!
A-1076/A-1281, Rev. 2.1
Page 12 of 40
Manual content is subject to change.
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65A5AB! ;,-)(''! )Z$! ,&)-! (,.! )*%Z)$,! )Z$4! *,! Ac6P)+32&$! *,93$4$,)-! *,! (! .*(%+,(''1!
(')$3,()*,%! -$2&$,9$[! (-! -Z+Y,! *,! X*%&3$! 6PG5! M+,-&')! %(-E$)! 4(,&0(9)&3$3!
0+3!3$9+44$,.$.!)+32&$!3$2&*3$4$,)-5!
!
NOTICE:!CZ*-!*-!0+3!*,-)(''()*+,!)+!)Z$!9(3[!-+!)Z$!F())$3,!*-!+,!)Z$!
+&)-*.$!L+')-5 !
!
!
CAUTION: Uneven Gasket Compression.!?+!,+)!+>$3P)*%Z)$,!)Z$!
,&)-!+,!+,$!-*.$!+0!)Z$!>('>$!(-!)Z*-!4(1!)*')!)Z$!>('>$!(,.!3$-&')!*,!
&,$>$,!%(-E$)!9+4F3$--*+,5!
!
TIP:!]-$!(!APAcSe!Y3$,9Z!)+!)*%Z)$,!4+&,)*,%!,&)-5!Do not exceed 200
ft-lb.!
!
!
X*%&3$!6PG!C*%Z)$,*,%!/$2&$,9$!
3.2!Leak Inspection
65G5A! C$-)!(''!,$Y'1!*,-)(''$.!>('>$-!)+!9+,0+34!)+!9(3P+Y,$3!-F$9*0*9()*+,-5!I+!'$(E-!-Z+&'.!L$!F3$-$,)5!
!
WARNING: Valve Leakage.!;4F3+F$3!>('>$P)+,%&$!-$()*,%!*,!)Z$!0'(,%$!%3++>$[!'++-$!,&)-!(,.!
.(4(%$.!%(-E$)-!4(1!3$-&')!*,!'$(E-!()!)Z$!>('>$P4+&,)*,%!R+*,)5!!
3.3!Valve Operation Notes and Precautions
!
CAUTION: Incorrect Setting.!I$>$3!(.R&-)!)Z$!-F3*,%!9+4F3$--*+,!+0!(!>('>$!YZ*'$!*)!*-!4+&,)$.!+,!)Z$!
>$--$'!9+>$3!F'()$!+3!*,9+33$9)!-$))*,%-!4(1!3$-&')5!
NOTICE
CAUTION
WARNING
CAUTION
1
2
3
4

!
A-1076/A-1281, Rev. 2.1
Page 13 of 40
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4!Valve Qualification
!
NOTICE:!C+!$,-&3$!L$-)!F3(9)*9$!(,.!9+,-*-)$,91!+0!1+&3!2&('*0*9()*+,!F3+9$.&3$[!HP3*,%-[!%(-E$)-!(,.!
Y*3$!-$('-!-Z+&'.!('Y(1-!L$!3$F'(9$.5!
I&)-[!Y(-Z$3-!(,.!-)&.-!4&-)!L$!9'+-$'1!*,-F$9)$.!L$0+3$!3$-&-$!+3!!3$F'(9$.!3$%&'(3'15!!
=('>$!9+4F+,$,)-!-&9Z!(-!)Z$!)+F!%&*.$[!-)$4[!3$)(*,$3[!L+.1!(,.!-F3*,%!4&-)!L$!)Z+3+&%Z'1!*,-F$9)$.5!
4.1!Valve Disassembly and Recommended Tools
SAE Wrenches
Component(s)/Description
Item #
NcA<e!
D+9E,&)!(,.!/)(,.+00-!
AO[!AS!
AOcA<e!
C+F!D+9E,&)!_#$)(*,$3a!
j!
Ae!
X'()-!+,!HP#*,%!#$)(*,$3!
6!
AOcA<e!
D+9E,&)-!
AG[!A6!
Other Tools, Supplies, and Equipment:
/*'*9+,$!i3$(-$!_)1F*9(''1!h1)+b!i8DGBS!+3!$2&*>('$,)a!
W4$31!8(F$3!_SBB!%3*)[!9&)!*,!Ae!-)3*F-a!
D*,)P03$$!M'+)Z!
C+32&$!73$,9Z$-!_BPGBB!0)P'La!
7*3$!g3&-Z!
CY+PQ34!8&''$3!
I+,P/93()9Z*,%!C++'!)+!#$4+>$!HP#*,%-!
/93$Y.3*>$3-!
C(L'$!SPA!#$9+44$,.$.!C++'-!0+3!=('>$!?*-(--$4L'1!
!
NOTICE:!=('>$!.*-(--$4L'1!-Z+&'.!+,'1!L$!.+,$!L1!)3(*,$.!F$3-+,,$'!Y*)Z!(99$--!)+!)Z$!F3+F$3!
4(9Z*,$-[!)++'-[!F3+9$.&3$-!(,.!F$3-+,('PF3+)$9)*>$!$2&*F4$,)!_88Wa5!
!
!
CAUTION: Spring-loaded Assembly.!?&3*,%!>('>$P-F3*,%!.*-(--$4L'1[!)Z$!>('>$!9+,)(*,-!-F3*,%-!&,.$3!
'+(.5!?H!IHC!())$4F)!)+!.*-(--$4L'$!)Z$!>('>$!Y*)Z+&)!0*3-)!3$(.*,%!)Z$-$!*,-)3&9)*+,-!+3!*,R&31!4(1!
3$-&')5!/F3*,%!F3$--&3$!4&-)!L$!(.R&-)$.!)+!)Z$!4*,*4&4!(,.!(!L$,9Z!9'(4F!+3!F3$--!&-$.!0+3!
.*-(--$4L'15!
NOTICE
NOTICE
CAUTION

!
A-1076/A-1281, Rev. 2.1
Page 14 of 40
Manual content is subject to change.
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S5A5A! ;0!(FF'*9(L'$[!3$4+>$!)Z$!9(F!(,.!jP*,9Z!9Z(*,!(--$4L'1!_*)$4!GAa5!!
!
!
!X*%&3$!SPA!#$4+>$!7*3$!/$('!
S5A5G! #$4+>$!)Z$!-$('!Y*3$-!_*)$4!A<a!03+4!)+FP%&*.$!-)(,.+00-!_*)$4!ASa5!!
!
!
X*%&3$!SPG!#$4+>$!)Z$!X+&3!I&)-!
S5A56! CZ$,[!3$4+>$!)Z$!)Y+!_Ga!'+9E,&)-!_*)$4!AOa!03+4!)Z$!)+F!%&*.$!_*)$4!Aa5!!
!
TIP:!]-$!(!NcA<e!Y3$,9Z!)+!3$4+>$!)Z$!)Y+!,&)-!_*)$4!AOa5!!
!
!
!X*%&3$!SP6!#$4+>$!D+9E,&)-!
S5A5S!I+Y[!3$4+>$!)Z$!)+F!%&*.$!_*)$4!Aa!sY*)Z!0'&$!
_*)$4! GBa[! *0! (FF'*9(L'$t! 03+4! )Z$! L+.1!_*)$4!
Sa[! (,.! )Z$,! 3$4+>$! )Z$! )Y+! _Ga! -)(,.+00-!
_*)$4!ASa5!!
!
TIP:!]-$!(!NcA<e!Y3$,9Z!)+!3$4+>$!)Z$!
-)(,.+00-!_*)$4!ASa!5!!
!
! !
X*%&3$!SPS!#$4+>$!C+F!i&*.$!(,.!X'&$[!)Z$,!/)(,.+00-!
16
14
21
15
1
4
20
1
14
4

!
A-1076/A-1281, Rev. 2.1
Page 15 of 40
Manual content is subject to change.
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S5A5O! #$4+>$!)Z$!3&LL$3!L&4F$3!Y(-Z$3!_*)$4!Na!03+4!)Z$!3$)(*,$3!_*)$4!6a!(,.!)Z$!
0'&$!%(-E$)!_*)$4!A`a[!*0!(FF'*9(L'$5!!
!
X*%&3$!SPO!#$4+>$!7(-Z$3!
S5A5<! D++-$,! )Z$! )+F! '+9E,&)! _*)$4! ja! Y*)Z! (! Y3$,9Z! +,! )Z$! -)$4! _*)$4! Ga! YZ*'$!
Z+'.*,%!)Z$!3$)(*,$3!*,!F'(9$!_*)$4!6a!Y*)Z!(,+)Z$3!Y3$,9Z5!!
!
TIP:!!
•! ]-$!(!AOcA<e!Y3$,9Z!+,!'+9E,&)!_*)$4!ja5!
•! ]-$!(!Ae!Y3$,9Z!)+!Z+'.!)Z$!3$)(*,$3!*,!F'(9$!_*)$4!6a5!
!
!
X*%&3$!SP<!D++-$,!D+9E,&)!
S5A5`! #$4+>$!)Z$!)+F!'+9E,&)!_*)$4!ja!03+4!)Z$!>('>$!-)$4!_*)$4!Ga5!!
!
TIP:!]-$!(!AOcA<e!Y3$,9Z!)+!3$4+>$!)Z$!'+9E,&)!_*)$4!ja5!
!
!
X*%&3$!SP`!#$4+>$!D+9E,&)!
S5A5j!D*0)!&F!(,.!3$4+>$!)Z$!HP3*,%!3$)(*,$3!_*)$4!6a5!!
!
TIP:!Q!)Y+P(34!F&''$3[!+3!(!F(*3!+0!-93$Y.3*>$3-[!4(1!L$!3$2&*3$.5!
!
!
X*%&3$!SPj!#$4+>$!#$)(*,$3!
3
9
17
3
8
2
8
2
3

!
A-1076/A-1281, Rev. 2.1
Page 16 of 40
Manual content is subject to change.
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S5A5N! #$4+>$!)Z$!HP3*,%-!_*)$4-!AB!(,.!AAa!03+4!)Z$!HP3*,%!%3++>$!+0!)Z$!3$)(*,$3!
_*)$4!6a5!!
!
TIP:!]-$!(!,+,P-93()9Z*,%!)++'!)+!3$4+>$!)Z$!HP3*,%-5!
!
!
X*%&3$!SPN!#$4+>$!HP#*,%-!
S5A5AB! #$4+>$!Y*3$!-$('!E*)!_*)$4!A<a5!!
!
X*%&3$!SPAB!#$4+>$!7*3$!/$('!
S5A5AA! I$b)[!3$4+>$!+,'1!)Z$!'+9E,&)!_*)$4!A6a!03+4!
)Z$! >('>$! -)$4! _*)$4! Ga5! ?+! ,+)! ())$4F)! )+!
3$4+>$!)Z$!(.R&-)4$,)!,&)!()!)Z*-!-)$F5!
!
TIP:!]-$!(!AOcA<e!Y3$,9Z!)+!
3$4+>$!)Z$!'+9E,&)!_*)$4!
A6a5!
!
! !
X*%&3$!SPAA!#$4+>$!D+9E,&)!
!
!
WARNING: C+!(>+*.!F3+.&9)!+3!F$3-+,('!*,R&31[!)Z$!0+''+Y*,%!-)$F-!4&-)!L$!F$30+34$.!L1!9$3)*0*$.!(,.!
)3(*,$.!F$3-+,$'!+,'15!
WARNING
11
10
3
16
13
2
12
13

!
A-1076/A-1281, Rev. 2.1
Page 17 of 40
Manual content is subject to change.
Visit midlandmfg.com for latest manual revision and revision history.
S5A5AG! 8'(9$! )Z$! >('>$! *,)+! (! F3$--! Z(>*,%! (! -&FF+3)! L'+9E! +3! 0'++3L+(3.! )+!
(''+Y!F(--P)Z3+&%Z!+0!)Z$!>('>$!-)$45!
!
X*%&3$!SPAG!8'(9$!=('>$!*,!(!83$--!
S5A5A6! ]-*,%! (! F3$--! 1+E$! Z(>*,%! (! 9&)(Y(1! (-! -Z+Y,[! 9+4F3$--! )Z$! >('>$!
-F3*,%! $,+&%Z! )+! (''+Y! 3$4+>('! +0! )Z$! (.R&-)4$,)! ,&)! _*)$4! AGa! YZ*'$!
)(E*,%!9(3$!)+!-&FF+3)!)Z$!>('>$!-)$45!
!
TIP:!]-$!(!AOcA<e!Y3$,9Z!)+!3$4+>$!)Z$!(.R&-)4$,)!,&)!_*)$4!AGa5!
!
!
X*%&3$!SPA6!M+4F3$--!/F3*,%!
S5A5AS! /'+Y'1!(,.!9(3$0&''1!L(9E!+00!)Z$!F3$--! Z$(.[!(''+Y*,%!)Z$!>('>$!-F3*,%!
_*)$4!Oa!)+!$bF(,.!0&''15!
!
CAUTION:!CZ$!>('>$!-)$4!4(1!+3!4(1!,+)!-)*9E!*,!)Z$!>('>$!-$()5!C(E$!
9(3$!YZ$,!'++-$,*,%!)Z$!(.R&-)4$,)!,&)!)+!F3$>$,)!)Z$!-)$4!03+4!0(''*,%!
'++-$!(,.!-&-)(*,*,%!.(4(%$5!/&FF+3)!)Z$!-)$4!(,.!'$)!*)!.+Y,!%$,)'15!
!
!
X*%&3$!SPAS!Q''+Y!/F3*,%!)+!WbF(,.!
CAUTION
!
!
!
5

!
A-1076/A-1281, Rev. 2.1
Page 18 of 40
Manual content is subject to change.
Visit midlandmfg.com for latest manual revision and revision history.
S5A5AO! #$4+>$!)Z$!>('>$!03+4!)Z$!F3$--[!)(E*,%!9(3$!)+!'*0)!*)!L1! )Z$!>('>$!-)$4!_*)$4!Ga5!CZ*-!Y*''!F3$>$,)! )Z$!-)$4!
03+4!0(''*,%!+&)!+0!)Z$!>('>$!L+.15!!
!
WARNING: Valve/Seat Damage. 7*)Z!-F3*,%!F3$--&3$!3$4+>$.!03+4!)Z$!>('>$!-)$4[!)Z$!-)$4!9(,!$(-*'1!
-Z*0)[!(''+Y*,%!)Z$!-$('*,%!$.%$-!+0!)Z$!-)$4!)+!9+,)(9)!4$)('!-&30(9$-!+3!)+!*4F3+F$3'1!9+,)(9)!)Z$!>('>$!
-$()5!7Z$,!'(1*,%!)Z$!>('>$!+,)+!)Z$!Y+3EL$,9Z[!E$$F!(!9+,-)(,)!'*0)*,%!0+39$!+,!)Z$!>('>$!-)$4!(L+>$!)Z$!
-F3*,%!)+!E$$F!)Z$!>('>$!-$()$.5!D(1!)Z$!(--$4L'1!.+Y,!+,!*)-!-*.$!9(3$0&''1!(,.!*44$.*()$'1!%3(-F!)Z$!
+FF+-*)$!_-Z+3)a!$,.!+0!)Z$!-)$4!)+!F3$>$,)!>('>$c-$()!.(4(%$5!
S5A5A<! D(1!)Z$!>('>$!+,!(!L$,9Z!(,.!F'(9$!(!F3+F$3'1!-*\$.!Y++.$,!L'+9E!L$,$()Z!)Z$!-Z+3)!$,.!+0!)Z$!>('>$!-)$4!)+!
F3$>$,)!*)!03+4!.3+FF*,%!(,.!.(4(%*,%!)Z$!>('>$!-$()5!
S5A5A`!#$4+>$!)Z$!-F3*,%!0+''+Y$3!_*)$4!<a!03+4!-)$4!_*)$4!Ga5!!
!
X*%&3$!SPAO!#$4+>$!/F3*,%!
X+''+Y$3!
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A-1076/A-1281, Rev. 2.1
Page 19 of 40
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4.2!Component Inspection
h$1! 9+4F+,$,)-! 4&-)! L$! )Z+3+&%Z'1! *,-F$9)$.! .&3*,%! )Z$! 2&('*0*9()*+,! F3+9$--5! CZ$-$! 9+4F+,$,)-! *,9'&.$! )Z$! )+F!
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X+''+Y$3!_*)$4!<a!

!
A-1076/A-1281, Rev. 2.1
Page 20 of 40
Manual content is subject to change.
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!
NOTICE:! 83+9$.&3$-! 4(1! ,+)! 9+>$3! (''! 9+,.*)*+,-! $,9+&,)$3$.! *,! )Z$! 0*$'.5! CZ$3$0+3$[! *)! *-! )Z$!
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