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40140-904 — REGULATOR,TEMPERATURE AND PRESSU

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

40140-904: REGULATOR,TEMPERATURE AND PRESSU.

REGULATOR,TEMPERATURE AND PRESSU. Key specifications include usage_design: REVERSE ACTING, overall_height: 13.250 INCHES NOMINAL IN, thermostat_type: BULB, thread_direction: RIGHT-HAND, distance_across_flats: 5.312 INCHES NOMINAL IN, end_item_identification: W/S SHIP, OHIO CLASS SSN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-460-0778, 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
40140-904
NSN: 4820-01-460-0778
FSC: 4820 — Valves, Nonpowered
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
usage_designREVERSE ACTING
overall_height13.250 INCHES NOMINAL IN
thermostat_typeBULB
thread_directionRIGHT-HAND
distance_across_flats5.312 INCHES NOMINAL IN
end_item_identificationW/S SHIP, OHIO CLASS SSN
largest_outside_diameter0.500 INCHES NOMINAL IN
spring_operated_pressure_reliefPROVIDED
NSN4820-01-460-0778
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40140-904 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SPRING OPERATED PRESSURE RELIEF: PROVIDED
•
LARGEST OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THERMOSTAT TYPE: BULB
•
USAGE DESIGN: REVERSE ACTING
•
DISTANCE ACROSS FLATS: 5.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT13.250 INCHES NOMINAL IN
SPRING OPERATED PRESSURE RELIEFPROVIDED
LARGEST OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THERMOSTAT TYPEBULB
END ITEM IDENTIFICATIONW/S SHIP, OHIO CLASS SSN
USAGE DESIGNREVERSE ACTING
DISTANCE ACROSS FLATS5.312 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
40140-9Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 40140-904?
40140-904 is a REGULATOR,TEMPERATURE AND PRESSU.
What parts can replace 40140-904?
There is 1 known substitute for 40140-904: 40140-9. Substitute compatibility should be verified for your specific system.
What is the NSN for 40140-904?
40140-904 is cataloged in the U.S. Government catalog under NSN 4820-01-460-0778. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.