Advantages

• Reducescontaminationandprovidesaccurateregulationofnon-corrosiveandcorrosivegases

• Convolutedmetaltometalsealeddiaphragm

• Closepressuredifferentialbetweencrackandreseat

• Economicallypriced

• Panelmountingstandard

• Bubble-tightshut-offatallreseatingpressures

• FlowcapacityCv=.30

Specifications

❏ OperatingParameters pressureratingpercriteriaofANSI/ASMEB31.3

controlledpressureranges. . . . 0-25,0-50,0-100, 0-250PSIG(0-1.7,0-3.5,0-7,0-17bar)

designproofpressure. . . . . . . . . 150%maximum ratedpressure

leakage . . . . . . . . . . . . . . . . . internal:bubble-tight

external: . designtomeet<2x10-8atmcc/secHe

operatingtemperature . . . . . . . . . . -15°Fto+165°F (-26°Cto+74°C)

flowcapacity . . . . . . . . . . . . . . . . . . . . . . Cv=.30

maximumoperatingtorque. . . 30in.-lbs.(3.4Nm)

❏ MediaContactMaterials body. . . . . . . . . . . . . . 316stainlesssteelorbrass

seatretainer. . . . . . . . . . . . . . . . . . . . . . . . . PEEK

o-ring.......................Viton®,Kalrez®

diaphragm,filter,spring . . . . . . . . . . . . . . . 316SST

remainingparts:. . . . . . . . . . . . . .316SSTorbrass

For other materials and modifications, please consult Tescom.

❏ Cleaning . . . . . . . . . . . CGA4.1andASTMG93

❏ Weight(withoutgauges) . . . . . . . . . 2lbs(.90kg)

General Purpose Back Pressurecontrolled pressure ranges up to 500 PSIG

economical

44-2500 Series

Viton® and Kalrez® are registered trademarks of DuPont.

D44251995x012

Pressure Conversion 14.2PSIG=1kg/cm2145PSIG=1MPa

WARNING!Do not attempt to select, install, use or maintain this product until you have read and fully understood the Tescom safety, Installation & operation Precautions.

Flow Chart

44-2500 Series General Purpose Back Pressure

©TescomCorporation,2008;AllRightsReserved.TescomisabusinessunitoftheRegulatorDivision.TrademarksarepropertyofdivisionsofEmersonProcessManagement.

FormNo.1996Rev.3/085MPrintedintheU.S.A.

All dimensions are reference & nominal

Metric (millimeter) equivalents are in brackets

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, expressed or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifications of such product at any time without notice.

Tescom Industrial & specialty controlsTel: 800-447-1250 • 763-241-3238Fax: 763-241-3224 • email: ic@tescom.com 12616 Industrial Boulevard • Elk River, MN 55330 USA

Part Number Selectorexample part number:

www.Tescom.com

For information contact:

44-25 6 2 V 2 4 A

BASICSeRIeS

BodyMAteRIAl

CoNtRolled PReSSuRe

RANGeSo-RING

MAteRIAlINlet & outlet

PoRt tyPeINlet & outlet

PoRt SIzeGAuGe PoRt

oPtIoNS

44-25 1 – Brass6 – 316SST

0 –0-25PSIG (0-1.7bar)1 –0-50PSIG (0-3.5bar)2 –0-100PSIG (0-7bar)3 –0-250PSIG (0-17bar)

t –Viton®

K –Kalrez®2 –NPT 4 –1/4"

(6.35mm)A – Nogaugeports

F – 1inletgaugeat90°

Repair Kits, Accessories & modifications may be available for this product. Please contact TescoM for more information.

typical Application

Storage Vessel

INL

ET

PR

ES

SU

RE

- P

SIG

(b

ar)

FLOW RATE - SCFM (SLPM) Nitrogen

0

300 (20.7)

275 (19.0)

250 (17.2)

225 (15.5)

200 (13.8)

175 (12.1)

150 (10.3)

125 (8.6)

100 (7.0)

75 (5.2)

50 (3.5)

25 (1.7)

5(141)

10(280)

15(424)

20(566)

25(707)

30(850)

35(990)

40(1132)

45(1273)

50(1415)

44-2500 Curves

44-2563

44-2562

44-2561

44-2560