Samson 3767 Service manual

Mounting and
Operating Instructions
EB 8355-2 EN
Edition December 2016
Type3767 Electropneumatic Positioner
Fig.1: Type3767

Denitionofsignalwords
DANGER!
Hazardous situations which, if not
avoided, will result in death or seri-
ous injury
WARNING!
Hazardous situations which, if not
avoided, could result in death or seri-
ous injury
NOTICE
Property damage message or mal-
function
Note:
Additional information
Tip:
Recommended action

2 EB8355-2EN

Contents
EB8355-2EN 3
1 Generalsafetyinstructions.............................................................................5
2 Designandprincipleofoperation..................................................................6
2.1 Versions and article code................................................................................9
2.2 Technical data .............................................................................................10
2.3 Additional equipment...................................................................................11
2.4 Summary of explosion protection approvals...................................................12
3 Mountingoncontrolvalves..........................................................................14
3.1 DirectattachmenttoType3277Actuator .......................................................14
3.2 AttachmentaccordingtoIEC60534-6...........................................................21
3.2.1 Mounting sequence......................................................................................22
3.2.2 Initial adjustment of travel.............................................................................22
3.3 Attachment to rotary actuators ......................................................................25
3.3.1 Mounting the lever with feeler roll..................................................................26
3.3.2 Mounting the intermediate piece ...................................................................26
3.3.3 Basic setting of the cam disk .........................................................................28
3.3.4 Reversingamplierfordouble-actingactuators ..............................................32
4 Connections................................................................................................34
4.1 Pneumatic connections..................................................................................34
4.1.1 Pressure gauges...........................................................................................34
4.1.2 Supply pressure ...........................................................................................34
4.2 Electrical connections ...................................................................................36
4.2.1 Switchingamplier ......................................................................................37
5 Operation...................................................................................................38
5.1 Tuningthepositionermountedontothecontrolvalve.......................................38
5.1.1 AdjustingtheproportionalbandXpandairdeliveryQ ..................................39
5.1.2 Settingsforactuatorwith“actuatorstemextends”fail-safeaction.....................40
5.1.3 Settingsforactuatorwith“actuatorstemretracts”fail-safeaction .....................40
5.2 Changingtheoperatingdirection..................................................................41
5.3 Adjustingthelimitcontacts ...........................................................................42
5.4 Adjustingthepositiontransmitter...................................................................44

4 EB8355-2EN
Contents
6 Convertingandretrottingthepositioner.....................................................47
6.1 Convertingfromelectropneumatictopneumatic .............................................47
6.2 Installingthelimitcontacts ............................................................................48
6.3 Installingasolenoidvalve.............................................................................48
6.4 Removingthesolenoidvalve .........................................................................49
7 Servicingexplosion-protecteddevices..........................................................49
8 Dimensionsinmm.......................................................................................50

EB8355-2EN 5
Generalsafetyinstructions
1 Generalsafetyinstructions
For your own safety, follow these instructions concerning the mounting, start up and opera-
tion of the device:
−Thedeviceistobemounted,starteduporoperatedonlybytrainedandexperienced
personnel familiar with the product. According to these mounting and operating instruc-
tions,trainedpersonnelreferstoindividualswhoareabletojudgetheworktheyareas-
signedtoandrecognizepossibledangersduetotheirspecializedtraining,theirknowl-
edgeandexperienceaswellastheirknowledgeoftheapplicablestandards.
−Anyhazardsthatcouldbecausedinthevalvebytheprocessmedium,thesignalpres-
sureorbymovingpartsaretobepreventedbytakingappropriateprecautions.
Ifinadmissiblemotionsorforcesareproducedinthepneumaticactuatorasaresultof
thesupplypressurelevel,itmustberestrictedusingasuitablesupplypressurereducing
station.
−Explosion-protectedversionsofthisdevicearetobeoperatedonlybypersonnelwhohas
undergonespecialtrainingorinstructionsorwhoisauthorizedtoworkonexplosion-pro-
tecteddevicesinhazardousareas.Seesection7.
To avoid damage to any equipment, the following also applies:
−Proper shipping and storage are assumed.
Note:
Devices with a CE marking fulll the requirements of the Directives 2014/34/EU and
2014/30/EU.
The declaration of conformity is included at the end of these instructions.


6 EB8355-2EN
Designandprincipleofoperation
2 Designandprincipleofoper-
ation
The positioner consists of an electropneumat-
ic converter and a pneumatic unit equipped
withaleverfortravelpick-up,ameasuring
diaphragm, and the pneumatic control system
withnozzle,diaphragmlever(apperplate),
andbooster.
The positioner is designed either for direct
attachmenttoSAMSONType3277Actuators
or for attachment to actuators according to
NAMUR(IEC60534-6)usinganadapter
housing.
Thepositionercanbeadditionallyequipped
with either inductive limit contacts and/or a
solenoid valve or position transmitter.
Thecontrolsignal,e.g.4to20mA,issuedby
the controller is transmitted to the electropneu-
maticconverter(13)whereitisconvertedinto
a proportional pressure signal pe.
The positioner operates according to the
force-balanceprinciple.Thevalvetravel,i.e.
thevalveposition,istransmittedtothepick-
uplever(1)overthepin(1.1)anddetermines
theforceoftherangespring(4).Thisforceis
compared to the positioning force generat-
edbythepressurepeat the measuring dia-
phragm(5).
If either the control signal or the valve posi-
tionchanges,thediaphragmlever(3)moves,
altering the distance to the nozzle (2.1 or
2.2),dependingontheadjusteddirectionof
action of the positioner.
Thesupplyairissuppliedtothebooster(10)
andthepressureregulator(9).
ThecontrolledsupplyairowsthroughtheXp
restriction(8)andthenozzle(2.1,2.2)and
hitsthediaphragmlever(apperplate).
Anychangeinthereferencevariableorthe
valve position causes the pressure to change
upstreamordownstreamofthebooster.
Theaircontrolledbythebooster(signalpres-
sure pst)owsthroughthevolumerestriction
(11)tothepneumaticactuator,causingthe
plug stem to move to a position correspond-
ingtothereferencevariable.
TheadjustableXprestriction(8)andvolume
restriction(11)areusedtooptimizetheposi-
tioner control loop.
Thepick-uplever(1)andtherangespring
(4)mustbeselectedtomatchtheratedvalve
travel and the nominal span of the reference
variable.
Positionerwithinductivelimitcontacts
In this version, the rotary shaft of the position-
ercarriestwoadjustabletagswhichactuate
thebuilt-inproximityswitches.
Positionerwithsolenoidvalve
When the positioner is equipped with a so-
lenoidvalve,thevalvecanbemovedtothe
fail-safeposition,regardlessoftheposition-
er's output signal. If a control signal corre-
spondingtothebinarysignal'0'(OFF)isap-
plied to the input, the signal pressure pst is
shut off and the actuator is vented. The actu-
atorspringsmovethevalvetoitsfail-safepo-
sition.

EB8355-2EN 7
Designandprincipleofoperation
1 Lever
1.1 Pin
1.2 Clamp
2.1 Nozzle >>
2.2 Nozzle <>
3 Diaphragm lever
4 Range spring
5Measuring
diaphragm
6.1 Span adjuster
6.2 Zero adjuster
7 Turnboard
8XPrestriction
9 Pressure regulator
10 Booster
11 Volume restriction
12 Solenoid valve
(option)
13 i/p converter
4
13 6.1 6.2
378 9 11
789101112
6.1 46.2
2.1
3
2.2
5
1
1.1
1.2
Pe
Supply
9
V
Pst
Q
Xp
p
imA
13
Travel
Fig.2: Functional diagram and inside view

8 EB8355-2EN
Designandprincipleofoperation
When a control signal corresponding to the
binarysignal'1'(ON)isappliedtothein-
put, the signal pressure pst is applied to the
actuator, allowing the valve to move accord-
ingtotheinputsignalissuedbythecontrol
equipment.
Positionerwithpositiontransmitter
A positioner containing a position transmit-
tercannotbeequippedwithintegratedlimit
contacts or an integrated solenoid valve
since the position transmitter requires most of
the space inside.
The position transmitter is used to assign the
valve position, i.e. the valve travel, to an out-
putsignalof4to20mA.Thetuningofthe
positiontransmitterensuresthatbothend
positions "valve CLOSED" or "valve OPEN"
aswellasallintermediatepositionscanbe
signalized. Since the valve position is signal-
ized independently of the input signal to the
positioner, the position transmitter is a suit-
ableoptionforcheckingtheactualvalvepo-
sition.

EB8355-2EN 9
Designandprincipleofoperation
2.1 Versionsandarticlecode
Electropneumaticpositioner Type3767- x x x 0 1 x x x x x x 0 0 0
Explosion protection
Without 0 2
II2GExiaIICT6accordingtoATEX 1
CSA/FM intrinsically safe/non incendive 3
II3GExnAIIT6acc.toATEX 8
Additional equipment
Without 0
Inductivelimitcontacts2xSJ2-SN 2
(Analogpositiontransmitter4to20mA)1) 60 0
3/2-waysolenoidvalve
Without 0
6VDC 2
12VDC 3
24VDC 4
Type of mounting
Standard range spring 0 1
Pneumatic connections
¼-18NPT 1
ISO221/1-G¼ 2
Electrical connections
PlasticcableglandM20x1.5,blue 1 0
PlasticcableglandM20x1.5,black 2 0
CableglandM20x1.5,nickel-platedbrass 2 1
Housing version
Die-castaluminum 1
CrNiMo steel 2
Referencevariable
4 to 20 mA 1
0 to 20 mA 2
1to 5mA 3
Temperature range
Standard 0
Low-temperatureversion
Tmin ≥–45°C;optionallimitcontacts,solenoidvalve 2 1 2
Special versions
Without 0 0 0
1) AvailableuntilMarch2011

10 EB8355-2EN
Designandprincipleofoperation
2.2 Technicaldata
Positioner
Travelrange,adjustable Directattachment:7.5to30mm
AttachmentaccordingtoIEC60534-6:7.5to120mmor
Opening angles 30°to90°dependingonthecamdisk
Referencevariable
Signal range 0/4to20mA 1to5mA
Span 8 to 20 mA 2 to 4 mA
Coil resistance Riat20°C 200Ω 880Ω
Supply air 1.4to6bar(20to90psi)
Air quality acc.
toISO8573-1
Max. particle size and density: Class 4
Oilcontent:Class3·Pressuredewpoint:Class3oratleast10Kbelowthelowest
ambienttemperaturetobeexpected
Signal pressure pst(output) Canbelimitedbetweenapprox.2.5to6.0bar(38to90psi)
Characteristic Linearcharacteristic,deviationfromterminal-basedconformity≤1%
Hysteresis ≤0.3%
Sensitivity ≤0.1%
Direction of action Reversible
ProportionalbandXp <1to2.5%(proportional-actioncoefcientKp:>100to40)
Air consumption
At1.4barsupplypressure:≤280ln/h
At6barsupplypressure:≤280ln/h
With lowest setting of pressure
regulator
Air output capacity Tollactuatorwithair:3.0mn³/h
Toventactuator:4.5mn³/h
8.5mn³/h
14.0 mn³/h
Permissibleambient
temperature
–20to80°Cwithplasticcablegland
–40to80°Cwithmetalcablegland(specialversiondownto–45°C)
–20to70°Cwithpositiontransmitter
Seetestcerticatesintheappendixforexplosion-protecteddevices
Inuences Temperature: ≤0.3%/10K
Supplyair:≤1%between1.4and6bar
Vibration:Nonebetween10and150Hzand4g
Explosion protection SeetestcerticateintheappendixfortypeofprotectionExiaIICT6
Degree of protection IP54(IP65andNEMA4Xpossiblebyttingaltercheckvalve.Seetableon
accessoriesonpage19)
Electromagneticcompatibility ComplyingwithEN61000-6-2,EN61000-6-3andNAMURRecommendation
NE21
Compliance ·
Weight Approx.1kg

EB8355-2EN 11
Designandprincipleofoperation
2.3 Additionalequipment
Inductivelimitcontacts
Two proximity switches SJ2-SN
Control circuit Values according to downstream transistor relay
Hysteresis at rated travel ≤1%
Solenoidvalve
Input Binary DC voltage signal
Nominal signal 6VDC 12VDC 24VDC
Signal'0'(noresponse)
DCsignalat–25°C ≤1.2V ≤2.4V ≤4.7V
Signal'1'(response)
DCsignalat80°C ≥5.4V ≥9.6V ≥18V
Maximumpermissiblesignal 28V 25V 32V
Coil resistance Riat20°C 2909Ω 5832Ω 11714Ω
Air consumption in steady state In addition to that of the positioner: OFF ≤60ln/h · ON ≤10ln/h
Closing time for
Rated travel and
signal pressure
range
(KVS=0.14)
Type3277
Actuator 120cm² 240cm² 350/355cm² 700cm²
0.2to1bar
≤0.5s
≤1s ≤1.5s ≤4s
0.4to2bar ≤2s ≤2.5s ≤8s
0.6to3bar ≤1s ≤1.5s ≤5s
Positiontransmitter1),2) –Outputcircuit,intrinsicallysafe
Output signal Two-wireconnection4to20mA,reversibleoperatingdirection
Auxiliary power Minimumterminalvoltage:12VDC
max.45VDC Only with intrinsically safe circuit
Characteristic Linear characteristic
Deviationfromcharacteristicaccordingtoterminalpointmethod:≤1%
Hysteresis ≤0.6%
Response ≤0.1%
Inuenceofpowersupply ≤1%whenvoltagechangesoccurwithinthespeciedlimits
High-frequencyinuence ≤0.1%,f=150MHz,1Wpoweroutputatadistanceof0.5m
Loadinuence ≤0.1%
Permissibleambienttemperature –20to70°C –20 to àSee test certicate
Ambienttemperatureinuence ≤0.4%onlowermeasuringrangevalue,≤0.2%onmeasuringspan
Ripple of output signal ≤0.3%
1) Databasedonstandardspring(15mmtravelwithType3277Actuator)andgainof100.
2) AvailableuntilMarch2011

12 EB8355-2EN
Designandprincipleofoperation
2.4 Summaryofexplosionprotectionapprovals
Type Certication Typeofprotection
3767 STCC Number No.974 0ExiaIICT6X
2ExsIIT6X
Valid until 2017-10-01
3767-1
No. RUCDE.08.00697
1ExiaIICT6/T5/T4GbX
ExtbIIICT80°CDbX
Date 2014-12-15
Valid until 2019-12-14
Number 13-KB4BO-0037
ExiaIICT6/T5/T4Date 2013-01-31
Valid until 2017-01-31
No. PTB01ATEX2167
II2GExiaIICT6
Date 2001-11-29
EC type examination
certicate
3767-3
®
No. 1607848 ExiaIICT6:ClassI,Zone0;
Class I, II, Div. 1, Groups A, B, C, D, E, F,
D;
Class I, II, Div. 2, Groups A, B, C, D, E, F,
D;
Date 2005-09-16
No. 3020228 ClassI,Zone0AExiaIIC
Class I, II, III, Div. 1, Groups A, B, C, D, E,
F, G
ClassI,Div.2,GroupsA,B,C,D;
ClassII,Div.2GroupsF,G;ClassIII;
Date 2005-02-28
3767-6 IECEx No. IECExTSA05.0004X ExiaI/IICT6IP65,
ExnI/IICT6IP65
Date 2005-05-24
3767-8
No. RUCDE.08.00697
2ExnAicIICT6/T5/T4GcXDate 2014-12-15
Valid until 2019-12-14
Number PTB01ATEX2170X
II3GExnAIIT6
Date 2003-05-28
Statement of
conformity

EB8355-2EN 13
Designandprincipleofoperation

14 EB8355-2EN
Mountingoncontrolvalves
3 Mountingoncontrolvalves
Thepositionercanbemountedeitherdirectly
toSAMSONType3277Actuatorortocon-
trolvalveswithcastyokesorrod-typeyokes
accordingtoIEC60534-6(NAMUR).
Combinedwithanintermediatepiece,the
positionercanalsobemountedonrotary
actuators. The standard positioner is deliv-
ered without accessories. Any additionally
required accessories are listed together with
theirordernumbersinthefollowingtables.
Do not remove the protective cover on the
backofthepositioneruntilyouactuallystart
to attach the positioner.
Mountingpositionandoperatingdirection
The operating direction of the positioner also
determines its mounting position on the actu-
atorasillustratedinFig.3,Fig.4andFig.6.
Theturnboard(7inFig.2)atthepositioner
mustbemountedcorrespondingly.
For an increasing input signal (reference
variable),thesignalpressurepst can either
beincreasing(directaction>>)ordecreas-
ing(reverseaction<>).Similarly,astheref-
erencevariabledecreases,thesignalpres-
surecaneitherdecrease(directaction>>)or
increase(reverseaction<>).
Ontheturnboard(7),theoperatingdirection
isindicatedbysymbols(direct>>,reverse
<>).Dependingonthepositionoftheturn-
board,theadjustedoperatingdirectionand
theassociatedsymbolbecomevisible.
If the required operating direction does not
correspondtothevisiblesymbol,orifyou
want to change the operating direction, re-
movethefasteningscrewattheturnboard,
turntheboardby180°andrefastenthe
turnboard.Makesurethethreerubbergas-
kets inserted in the housing remain in posi-
tion.
NOTICE
When any subsequent changes are
made, e.g. reversing the operating
direction of the positioner control
loop or changing the actuator fail-
safe action from “actuator stem
extends” to “actuator stem retracts”
or vice versa, the positioner's
mounting position must be changed
accordingly.
3.1 Directattachmentto
Type3277Actuator
Note:
The required accessories are listed in
Table1 to Table4 on page18.
The attachment of the positioner either on the
left or right side of the actuator (always look-
ing onto the signal pressure connection or
switchoverplate)isdeterminedbythere-
quired operating direction of the positioner,
i.e. >> or <>.


EB8355-2EN 15
Mountingoncontrolvalves
SUPPLY
Actuatorstemextends
Actuatorstemretracts
Internal signal
pressure connection
Sideviewofconnectionblock
Signal pressure
connection over piping
Connectionblock
Tipofgasket(16)
Operating
direction >>
Left attachment
Operating
direction <>
Left attachment
With gasket (new) With switch plate (old)
Switchplate(13)
Gasket(16)
Cover
Switchover plate Signal pressure input
Signal pressure
input for left
attachment
Seal with
lter
With right
attachment
Marking
Marking
Symbol
Actuator stem extends
Actuator stem retracts
Operating
direction <>
Right attachment
Actuatorstemextends
>> Operating direction <>
Left attachment Right attachment
Actuatorstemretracts
<> Operating direction >>
Left attachment Right attachment
Operating
direction >>
Right attachment
Fig.3: Mounting position and connection of signal pressure for Type3277 Actuator (top) and
Type3277-5 Actuator (120cm²) (bottom)

16 EB8355-2EN
Mountingoncontrolvalves
1. Fastentheclamp(1.2)totheactuator
stem, making sure that the fastening
screw rests in the groove of the actuator
stem.
2. Fastentheassociatedpick-upleverD1or
D2(with355/700cm²actuators)tothe
feedbackleverofthepositioner.
3. Securetheintermediateplate(15)with
the gasket facing towards the actuator
yoke.
4. Positionthepositionersuchthatthepick-
upleverslidesinlineoverthepin(1.1)
oftheclamp(1.2).Fastenthepositioner
totheintermediateplate(15).
5. Mountcover(16).
6. Check whether the correct range spring
hasbeeninstalledaslistedinTable4.
Range spring 1 is installed as standard.
If necessary, replace it with range spring
2includedintheaccessoriesandxitat
theouterhook-inholes.
Actuatorswith240,350,355,and
700cm²diaphragmareas
7. Makesurethatthetipofthegasket(16)
projecting from the side of the connec-
tionblock(Fig.3,middle)ispositioned
tomatchtheactuatorsymbolfortheac-
tuator'sfail-safeaction"actuatorstem
extends" or "actuator stem retracts".
If this is not the case, unscrew the three
fastening screws and lift off the cover.
Turnthegasket(16)by180°andre-in-
sert it.
Theoldconnectionblockversionrequires
theswitchplate(13)tobeturnedtoalign
theactuatorsymbolwiththearrowmark-
ing.
8. Placetheconnectionblockwiththeasso-
ciated gaskets against the positioner and
the actuator yoke. Fasten it using the
screw.
Foractuatorswithfail-safeaction"actua-
tor stem retracts", additionally mount the
external signal pressure pipe.
Actuatorwith120cm²diaphragmarea
The signal pressure is transmitted to the dia-
phragmchamberovertheswitchoverplate
(Fig.3andFig.4,bottom).
7. Removescrewplugonthebackofthe
positioner(Fig.5)andsealthesidesig-
nal pressure output with the stopper in-
cluded in the accessories.
8. Mount the positioner so that the hole in
theintermediateplate(15)coversthe
seal in the hole of the actuator yoke.
9. Align the switchover plate with the corre-
spondingactuatorsymbol.Fastenitto
the actuator yoke.
NOTICE
If a solenoid valve or a similar device
is additionally mounted onto a
120cm² actuator, do not remove the
M3 screw plug at the back of posi-
tioner. In this case, the signal pres-
sure must be transmitted from the sig-
nal pressure output to the actuator
over an additional connecting plate
(Table2). The switchover plate is not
used in this case.

EB8355-2EN 17
Mountingoncontrolvalves
Airpurgingofthespringchamber
Ifthespringchamberoftheactuatoristobe
purged with the exhaust air from the posi-
tioner,usepiping(Table3)toconnectthe
springchamber(with"actuatorstemex-
tends"version)totheconnectionblock.To
do so, remove the stopper from the connec-
tionblock.Foranactuatorwithfail-safeac-
tion "actuator stem retracts" and in
Type3277-5Actuatorswithaneffectivedia-
phragmareaof120cm²,theexhaustair
from the positioner is connected to the spring
chamberoveraninternalhole.
NOTICE
When the valve is installed, the side
cover of the actuator must be mount-
ed such that the vent plug points
downward.
1.2
D2
D1
15
Vent plug
Vent plug must point
downward when the
valve is installed
View onto the signal pressure connection
Leftattachment Rightattachment
Cover
Switchover plate
Intermediateplate(15)
Clamp(1.2)
Signalpressureborehole
240cm²
350cm²
355cm²
700cm²
120cm²
Type3277
Type3277-5
Fig.4: Mounting the clamp

18 EB8355-2EN
Mountingoncontrolvalves
Table1: Lever (see Fig.4) Mountingkit
Actuator size Lever with associated clamp and intermediate plate Order no.
120cm² D1leverwithstopperforoutput(38) Standard version 1400-7116
Versioncompatiblewithpaint 1402-0944
240/350cm² D1lever(33mmlongwith17mm
clamp)
Standard version 1400-6370
Versioncompatiblewithpaint 1402-0942
355/700cm² D2lever(44mmlongwith13mm
clamp)
Standard version 1400-6371
Versioncompatiblewithpaint 1402-0943
Table2: Switchover plates and connecting plates Order no.
Switchoverplate(for120cm²actuator) Type3277-5xxxxxx.00Actuator(old) 1400-6819
New switchover plate Type3277-5xxxxxx.01Actuator(new)orhigher 1400-6822
Connecting plate for additional attachment
of, e.g. a solenoid valve
Type3277-5xxxxxx.00Actuator(old),G
1
/
8
Type3277-5xxxxxx.00Actuator(old),
1
/
8
NPT
1400-6820
1400-6821
New connecting plate Type3277-5xxxxxx.01Actuator(new)orhigher
G
1
/
8
and
1
/
8
NPT 1400-6823
Note: Only new switchover and connecting plates can be used with new actuators (Index 01). Old and new plates
are not interchangeable.
Requiredconnectionblockfor240,350,355,and700cm²
actuator(includinggasketsandfasteningscrew)
G¼ 1400-8819
¼ NPT 1402-0901
Table3: Pipe connection Material Actuatorsize[cm²] Order no.
Required pipe connection including screw
tting
For actuator with "actuator stem retracts" or
with air purging of the top diaphragm cham-
ber
Steel 240 1400-6444
Stainless steel 240 1400-6445
Steel 350 1400-6446
Stainless steel 350 1400-6447
Steel 355/700 1400-6448
Stainless steel 355/700 1400-6449
Table4: Range spring Travel[mm] Actuatorsize[cm²] Order no.
2(4.5coils) 7.5 120, 240 1400-6443
1(9.5coils,installedasstandard) 10to15 120,240and350 1400-6442
215 355/700 1400-6443
1 30 355/700 1400-6442

EB8355-2EN 19
Mountingoncontrolvalves
Accessories Order no.
Pressuregaugemountingblock(onlyfor120cm²) G¼ 1400-7458
¼ NPT 1400-7459
Pressure gauge mounting kit for supply pressure and signal
pressure
Stainlesssteel/brass 1400-6950
Stainless steel/stainless steel 1400-6951
Filtercheckvalve,replacesventplugandincreasesthedegreeofprotectiontoIP65
FiltercheckvalveinhousingwithG¼thread
Polyamide,
IP65degreeofprotection 1790-7408
1.4301,IP65degreeof
protection 1790-7253
Polyamide,
NEMA 4 degree of protection 1790-9645
1.4301,
NEMA 4 degree of protection 1790-9646
Assortment of spare parts including gaskets and diaphragms 1400-9895

20 EB8355-2EN
Mountingoncontrolvalves