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40399-902 — VALVE,REGULATING,SYSTEM PRESSURE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

40399-902: VALVE,REGULATING,SYSTEM PRESSURE.

VALVE,REGULATING,SYSTEM PRESSURE. Key specifications include filter: NOT INCLUDED, material: COPPER ALLOY BODY, body_style: STRAIGHT THRU, temp_rating: 165.0 FAHRENHEIT NOMINAL DEGF, regulation_type: 1ST STAGE MANUAL, 2ND STAGE AUTOMATIC, flow_control_device: DISK. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-306-3129, 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
40399-902
NSN: 4820-01-306-3129
FSC: 4820 — Valves, Nonpowered
CAGE: 55378 — TRAC REGULATOR CO., INC. DBA TRAC REGULATOR CO INC (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialCOPPER ALLOY BODY
body_styleSTRAIGHT THRU
temp_rating165.0 FAHRENHEIT NOMINAL DEGF
regulation_type1ST STAGE MANUAL, 2ND STAGE AUTOMATIC
flow_control_deviceDISK
valve_loading_methodSPRING
manual_control_methodSCREW
outlet_pressure_range5.0 TO 30.0 CAMERA MOUNT
end_connection_quantity2
remote_actuation_methodDIAPHRAGM
media_for_which_designedWATER, FRESH OR WATER, SALT
NSN4820-01-306-3129
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 40399-902 · 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
•
FLOW CONTROL DEVICE: DISK
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
REMOTE ACTUATION METHOD: DIAPHRAGM
•
BODY STYLE: STRAIGHT THRU
•
REGULATION TYPE: 1ST STAGE MANUAL, 2ND STAGE AUTOMATIC
•
FIRST END STYLE DESIGNATOR: SOCKET
•
TEMP RATING: 165.0 FAHRENHEIT NOMINAL DEGF
•
END CONNECTION QUANTITY: 2
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
REMOTE ACTUATION METHODDIAPHRAGM
BODY STYLESTRAIGHT THRU
REGULATION TYPE1ST STAGE MANUAL, 2ND STAGE AUTOMATIC
FIRST END STYLE DESIGNATORSOCKET
TEMP RATING165.0 FAHRENHEIT NOMINAL DEGF
END CONNECTION QUANTITY2
OUTLET PRESSURE RANGE5.0 TO 30.0 CAMERA MOUNT
MANUAL CONTROL METHODSCREW
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 40399-902?
40399-902 is a VALVE,REGULATING,SYSTEM PRESSURE.
What is the NSN for 40399-902?
40399-902 is cataloged in the U.S. Government catalog under NSN 4820-01-306-3129. 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.