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Dwyer Series MPR User manual

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Series MPR Miniature Pressure Regulator
Specifications - Installation and Operating Instructions
Bulletin V-MPR
The Series MPR Miniature Pressure Regulators are compact units
that provide low cost, high performance pressure regulation of
compressed air or water. The low torque, non-rising adjustment knob
with locking capability provides easy and precise regulation and
preventsleakage.Thecompactsizeandlightweightconstructionmake
this unit ideal for the OEM market and portable equipment including
adhesive dispensers, printing presses, medical equipment, spray
equipment, analyzers, pumps, compressors, welding machines and
manymore.ModelMPR1isarelievingregulatorandmodelMPR2isa
non-relieving regulator. (The MPR2 is typically used in water
applications). When controlling air, Series MPR should be used in
constantflowordownstreampressurereliefapplications.
INSTALLATION
1. System piping should be the same pipe size as regulator ports.
Locateregulatorascloseaspossibletothedeviceusingregulated
air. If cycling devices and/or lubricators are used in the piping
system, install the regulator upstream of these devices. A filter
installedupstreamoftheregulatorisrecommendedtomaximize
servicelife.
2. The arrow on the regulator body indicates direction of air flow.
Connectpipingtoproperportsusingpipesealantonmalethreads
only.Donotallowsealanttoenter interiorofregulator.TheSeries
MPR canbeinstalledatanyangle.
3. Two1/8˝NPT gaugeportsareprovidedtoallowfortheconnection
ofanoutletpressuregaugeorasadditionaloutletsforregulatedair.
Plug unused gauge ports. Panel-mounted units require a 1 3/16˝
(6.350mm)diameterholewithamaximumpanelthicknessof1/4˝
(4.8mm).
ADJUSTMENT
1.Pulltheknoboutwardtounlockandadjustpressuresetting.Before
turning on system air pressure, turn regulator knobcounter-
clockwisejustuntiltheknobstops.Turnonsystemairpressure.Turn
regulatorknobclockwiseuntiloutletpressurereachesdesiredsetting.
2. When changing pressure setting, always approach the desired
pressure from a lower setting. For example, lowering the outlet
pressurefrom80psito60psiisbestaccomplishedbydroppingthe
outletpressureto50psi,andthenadjustingupto60psi.
3. Pushknobinwardtolockpressuresetting.
SPECIFICATIONS
Service: Compressedairorwater.
Port Size: Inletoroutlet: Two1/4˝NPT (Female);Two1/8˝NPT
(Female) gaugeports.
Maximum Supply Pressure: 250psig(17.2bar).
Flow Capacity: 24SCFM(48m
3
/hr)at100psig(6.9bar).
Operating Temperature: 0to150°F(-18to60°C).
Materials: Body:Zinc;Bonnet: Acetal;Diaphragm/Seals: Nitrile;
Internals:Aluminum,brass,acetal,steel,musicwire(MPRisplatedwith
electrolessnickelforwateruse).
Weight: 4oz.(113g).
3/8
[9.65]
2
-27/32
[
71.88]
1-5/8
[41.40]
1
-1/2
[38.10]
(
2) 1/4 NPT
I
NLET & OUTLET
P
ORTS
(
2) 1/8 NPT
G
AGE PORTS
PROXIMITY CONTROLS
Phone: 219/879-8000 www.dwyer-inst.com
A DIVISION OF DWYER INSTRUMENTS, INC.
Fax: 219/872-9057 e-mail: [email protected]
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
PROXIMITY CONTROLS
Phone: 219/879-8000 www.dwyer-inst.com
A DIVISION OF DWYER INSTRUMENTS, INC.
Fax: 219/872-9057 e-mail: [email protected]
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
©Copyright2013 DwyerInstruments,Inc. PrintedinU.S.A.8/13FR-#RB-443190-00Rev.4
3. CLEANING: Cleanpartsinwarmwaterandmildsoapandletairdry.
Usingdry,cleancompressedair,blowoutthebody.Ifanypartsare
damaged,consultthefactoryforanRGA (ReturnedGoods
Authorization) number.
4. TO REASSEMBLE:LubricateO-ringonsupplyseatwithquality
O-ringgrease.Tightensupplyseatintobodyofregulator.Makesure
thepintleslidesupanddownfreelyaftertighteningsupplyseat.
Tightenbonnetontobody.Do not over tighten, as it could strip
bonnet threads.
WARNING
1.TheSeriesMPRMiniaturePressureRegulatorsareintendedforuse
inindustrialcompressedairsystemsonly.Donotusewhere
pressureandtemperaturescanexceedthoselistedunder
SPECIFICATIONS inthismanual.
2.Inrelieving-typeregulators(MPR1),excesspressureisventedoutof
theregulatorwhenthereisanincreaseindownstreampressure
abovethepressuresetting.However,reliefcapacityislimited.Ifa
suddenincreaseindownstreampressurecouldruptureor
malfunctiondownstreamequipment,installapressure-reliefdevice
downstreamoftheregulator.Thecapacityofthereliefdevicemust
satisfythesystemrequirements.
3. Innon-relievingregulators(MPR2),downstreampressureabovethe
pressuresettingdoesnotrelievetoatmosphere.Anothermeansof
relievingpressuremustbeprovided,ifnecessary.
4. Beforeusingtheseproductswithanythingotherthanairorthe
specifiedfluids,fornon-industrialapplications,life-supportsystems,
orotherapplicationsnotwithinpublishedspecifications,please
consultthefactory.
MAINTENANCE
UponfinalinstallationoftheSeriesMPRMiniaturePressureRegulator,
no routine maintenance is required. A periodic check of the system
calibrationisrecommended.TheSeriesMPRisnotfieldserviceableand
should not be returned if repair is needed (field repair should not be
attemptedandmayvoidwarranty).Besuretoincludeabriefdescription
of the problem plus any relevant application notes. Contact customer
servicetoreceiveareturngoodsauthorizationnumberbeforeshipping.
MAINTENANCE
WARNING:
Air supply pressure must be shut off before attempting
to install or disassemble regulator for servicing.
1. Ifairsupplyiskeptclean,regulatorshouldprovidelong periodsof
uninterruptedservice.Iferraticperformanceoccurs,itislikelythat
partsintheregulatorneedtobecleanedorreplaced.
2. TO DISASSEMBLE: Reduce pressure in inlet and outlet lines to
zero. Regulator can be serviced without removal from line.
Pullknobouttodisengagelockandturnknobcounter-clockwise
untilitstops.Thiswillremoveanyloadontherangespring.
Unscrewbonnet.Adjustingscrewandnutarenotretained,and
mayfallout.Removerangespringanddiaphragmassembly.
Unscrewsupplyseat(hexsocketsizeis9/16˝),andremovepintle
andpintlespring.
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Part Description
Knob
Bonnet
AdjustingScrew
AdjustingNut
RangeSpring
DiaphragmAssembly
SupplySeat
SupplySeatO-Ring
Pintle
PintleSpring
Body
PipePlugs
Material
Acetal
Acetal
Zinc-PlatedSteel
Zinc-PlatedSteel
Zinc-PlatedSteel
Acetal/Nitrile
Acetal
Nitrile
Aluminum/Nitrile
300StainlessSteel
ZincAlloy
Steel
/