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055920 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

055920: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, end_item_identification: 4820-01-258-9351; GATE VALVE, stem_actuating_end_type: THREADED EXTERNALLY, valve_size_for_which_designed: 6.000 INCHES IN, valve_type_for_which_designed: GATE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-251-7695, 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
055920
NSN: 4820-01-251-7695
NIINs: 012517695, 012517905, 012589351, 015311518
FSC: 4820 — Valves, Nonpowered
CAGE: 48422 — WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
end_item_identification4820-01-258-9351; GATE VALVE
stem_actuating_end_typeTHREADED EXTERNALLY
valve_size_for_which_designed6.000 INCHES IN
valve_type_for_which_designedGATE
NSN4820-01-251-7695
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 055920 · 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
SUBSTITUTES & CROSS-REFERENCES 2
231050131440317Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
105013 P144Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 055920?
055920 is a SEAT,VALVE.
What parts can replace 055920?
There are 2 known substitutes for 055920: 231050131440317, 105013 P144. Substitute compatibility should be verified for your specific system.
What is the NSN for 055920?
055920 is cataloged in the U.S. Government catalog under NSN 4820-01-251-7695. 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.