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Technical Data Sheet

203921B — Technical Data Sheet

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BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING · COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The THERMOSTAT,FLOW CONTROL is a BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING industrial component. Key specifications include USAGE DESIGN: COOL WATER, OVERALL HEIGHT: 2.625 INCHES NOMINAL IN, MOUNTING METHOD: THREADED, THERMOSTAT TYPE: BELLOWS, THREAD DIRECTION: RIGHT-HAND, FLOW CONTROL DEVICE: CHOKE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 6685-00-527-6545, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
203921B
NSN: 6685-00-527-6545
FSC: 6685
CAGE: 28265 — HERCULES ENGINE CO INC (USA)
SPECIFICATIONS
USAGE DESIGNCOOL WATER
OVERALL HEIGHT2.625 INCHES NOMINAL IN
MOUNTING METHODTHREADED
THERMOSTAT TYPEBELLOWS
THREAD DIRECTIONRIGHT-HAND
FLOW CONTROL DEVICECHOKE
OPENING TEMP RATING99.0 FAHRENHEIT NOMINAL DEGF
DISTANCE ACROSS FLATS1.750 INCHES NOMINAL IN
OPERATING TEMP RATING106.0 FAHRENHEIT NOMINAL DEGF
VALVE TRAVEL DISTANCE0.197 INCHES NOMINAL IN
CLOSING PRESSURE SETTING39.0 POUNDS PER SQUARE INCH NOMINAL LBS
OPENING PRESSURE SETTINGERR-060
NSN6685-00-527-6545
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING THERMOSTAT,FLOW CONTROL TITLE COMPONENT PN 203921B MFR BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING THERMOSTAT,FLOW CONTRO
KEY FEATURES
•
OPERATING TEMP RATING: 106.0 FAHRENHEIT NOMINAL DEGF
•
FLOW CONTROL DEVICE: CHOKE
•
INSIDE MOUNTING SURFACE TO VALVE SEAT DISTANCE: 2.120 INCHES IN
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 1-1/2-18 UNEF
•
USAGE DESIGN: COOL WATER
•
SPRING OPERATED PRESSURE RELIEF: PROVIDED
•
MOUNTING METHOD: THREADED
•
ACCESSORY COMPONENTS AND QUANTITY: GASKET,MTG
TECHNICAL CHARACTERISTICS
OPERATING TEMP RATING106.0 FAHRENHEIT NOMINAL DEGF
FLOW CONTROL DEVICECHOKE
INSIDE MOUNTING SURFACE TO VALVE SEAT DISTANCE2.120 INCHES IN
THREAD SIZE AND SERIES/TYPE DESIGNATOR1-1/2-18 UNEF
USAGE DESIGNCOOL WATER
SPRING OPERATED PRESSURE RELIEFPROVIDED
MOUNTING METHODTHREADED
ACCESSORY COMPONENTS AND QUANTITYGASKET,MTG
CLOSING PRESSURE SETTING39.0 POUNDS PER SQUARE INCH NOMINAL LBS
OPENING TEMP RATING99.0 FAHRENHEIT NOMINAL DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
23516DInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
854009InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
16B854009InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3910811InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
J910811InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
208135InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 203921B?
203921B is a THERMOSTAT,FLOW CONTROL manufactured by BRINKLEY TECHNOLOGY GROUP LLC DBA HERCULES MANUFACTURING.
What parts can replace 203921B?
There are 7 known substitutes for 203921B: 23516D, 854009, 16B854009 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 203921B?
203921B is cataloged in the Federal Logistics Information System under NSN 6685-00-527-6545. This indicates validated use in U.S. government and defense supply chains.
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