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637NC-6111 — KEEPER,SPRING,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

637NC-6111: KEEPER,SPRING,VALVE.

The KEEPER,SPRING,VALVE is a the manufacturer industrial component. Key specifications include end_item_identification: TURBINE STM FIRE PMP. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-107-9813, 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
637NC-6111
NSN: 4820-01-107-9813
FSC: 4820 — Valves, Nonpowered
CAGE: 0BR59 — SIEMENS GOVERNMENT TECHNOLOGIES, INC. DBA SGT DRESSER-RAND DIV SGT DRESSER-RAND (USA)
SPECIFICATIONS
end_item_identificationTURBINE STM FIRE PMP
NSN4820-01-107-9813
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 637NC-6111 · 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONTURBINE STM FIRE PMP
SUBSTITUTES & CROSS-REFERENCES 5
NH-6764 PIECE 637Reference document
Same NSN cross-reference
Reference document — Secondary reference
NH-7011 PIECE 637Reference document
Same NSN cross-reference
Reference document — Secondary reference
NH-6751 PIECE 637Reference document
Same NSN cross-reference
Reference document — Secondary reference
H-7922 PIECE 125Reference document
Same NSN cross-reference
Reference document — Secondary reference
423022Reference 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 637NC-6111?
637NC-6111 is a KEEPER,SPRING,VALVE.
What parts can replace 637NC-6111?
There are 5 known substitutes for 637NC-6111: NH-6764 PIECE 637, NH-7011 PIECE 637, NH-6751 PIECE 637 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 637NC-6111?
637NC-6111 is cataloged in the U.S. Government catalog under NSN 4820-01-107-9813. 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.