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204137-1 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

204137-1: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include end_item_identification: MULTI TERRAIN LOADER: 3805-01-539-3925, part_name_assigned_by_controlling_agency: PLATE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-358-0634, 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
204137-1
NSN: 4820-01-358-0634
NIINs: 013580634, 015492553
FSC: 4820 — Valves, Nonpowered
CAGE: 25204 — ADMIRAL FILTER COMPANY LLC (USA)
SPECIFICATIONS
end_item_identificationMULTI TERRAIN LOADER: 3805-01-539-3925
part_name_assigned_by_controlling_agencyPLATE
NSN4820-01-358-0634
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 204137-1 · 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
•
STYLE DESIGNATOR: STRAIGHT THRU
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
MATERIAL: STEEL CORROSION RESISTING BODY
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSTRAIGHT THRU
SPECIAL FEATURES0.250 IN. OD TUBE END CONNECTIONS IN
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
MATERIALSTEEL CORROSION RESISTING BODY
VALVE OPERATION METHODAUTOMATIC
SUBSTITUTES & CROSS-REFERENCES 2
690220C ITEM 29Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
203863Reference 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 204137-1?
204137-1 is a VALVE,CHECK.
What parts can replace 204137-1?
There are 2 known substitutes for 204137-1: 690220C ITEM 29, 203863. Substitute compatibility should be verified for your specific system.
What is the NSN for 204137-1?
204137-1 is cataloged in the U.S. Government catalog under NSN 4820-01-358-0634. 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.