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174959-991 — VALVE,SHUTTLE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

174959-991: VALVE,SHUTTLE.

The VALVE,SHUTTLE is a the manufacturer industrial component. Key specifications include special_features: SHUTTLE ASSEMBLY FOR 6400-015 HSP, end_item_identification: HOST AND OCEANIC COMPUTER SYSTEM REPLACEMENT (HOCSR). This part is cataloged in the U.S.

Government catalog under NSN 4820-01-527-8016, 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
174959-991
NSN: 4820-01-527-8016
FSC: 4820 — Valves, Nonpowered
CAGE: 55759 — PRINTRONIX, LLC (USA)
SPECIFICATIONS
special_featuresSHUTTLE ASSEMBLY FOR 6400-015 HSP
end_item_identificationHOST AND OCEANIC COMPUTER SYSTEM REPLACEMENT (HOCSR)
NSN4820-01-527-8016
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 174959-991 · 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
SPECIAL FEATURESSHUTTLE ASSEMBLY FOR 6400-015 HSP
END ITEM IDENTIFICATIONHOST AND OCEANIC COMPUTER SYSTEM REPLACEMENT (HOCSR)
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 2
24H8929Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
157735-7001Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 174959-991?
174959-991 is a VALVE,SHUTTLE.
What parts can replace 174959-991?
There are 2 known substitutes for 174959-991: 24H8929, 157735-7001. Substitute compatibility should be verified for your specific system.
What is the NSN for 174959-991?
174959-991 is cataloged in the U.S. Government catalog under NSN 4820-01-527-8016. 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.