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31440N ITEM 3 — RETAINER,SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

31440N ITEM 3: RETAINER,SEAT,VALVE.

The RETAINER,SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, valve_design_control_activity: 35795, valve_size_for_which_designed: 12.000 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-392-8175, 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
31440N ITEM 3
NSN: 4820-01-392-8175
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialNICKEL ALLOY
valve_design_control_activity35795
valve_size_for_which_designed12.000 INCHES IN
NSN4820-01-392-8175
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 31440N ITEM 3 · 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
•
VALVE SIZE FOR WHICH DESIGNED: 12.000 INCHES IN
•
VALVE DESIGN CONTROL ACTIVITY: 35795
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS
VALVE SIZE FOR WHICH DESIGNED12.000 INCHES IN
VALVE DESIGN CONTROL ACTIVITY35795
MATERIALNICKEL ALLOY
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 1
396358Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 31440N ITEM 3?
31440N ITEM 3 is a RETAINER,SEAT,VALVE.
What parts can replace 31440N ITEM 3?
There is 1 known substitute for 31440N ITEM 3: 396358. Substitute compatibility should be verified for your specific system.
What is the NSN for 31440N ITEM 3?
31440N ITEM 3 is cataloged in the U.S. Government catalog under NSN 4820-01-392-8175. 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.