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177-7374 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

177-7374: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include special_features: NEXT HIGHER ASSEMBLY 201-1270 AIR CLEANER GP; FOR USE WITH SAE NO. 1 FLYWHEEL HOUSING, valve_operation_method: AUTOMATIC, end_item_identification: DIESEL ENG C18 (INLS) MODEL 250-4620, MODEL 250-2619, media_for_which_designed: AIR SINGLE RESPONSE, part_name_assigned_by_controlling_agency: VALVE-CHECK.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-533-6967, 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
177-7374
NSN: 4820-01-533-6967
FSC: 4820 — Valves, Nonpowered
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
special_featuresNEXT HIGHER ASSEMBLY 201-1270 AIR CLEANER GP; FOR USE WITH SAE NO. 1 FLYWHEEL HOUSING
valve_operation_methodAUTOMATIC
end_item_identificationDIESEL ENG C18 (INLS) MODEL 250-4620, MODEL 250-2619
media_for_which_designedAIR SINGLE RESPONSE
part_name_assigned_by_controlling_agencyVALVE-CHECK
NSN4820-01-533-6967
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 177-7374 · 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
•
MEDIA FOR WHICH DESIGNED: AIR SINGLE RESPONSE
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESNEXT HIGHER ASSEMBLY 201-1270 AIR CLEANER GP; FOR USE WITH SAE NO. 1 FLYWHEEL HOUSING
MEDIA FOR WHICH DESIGNEDAIR SINGLE RESPONSE
PART NAME ASSIGNED BY CONTROLLING AGENCYVALVE-CHECK
END ITEM IDENTIFICATIONDIESEL ENG C18 (INLS) MODEL 250-4620, MODEL 250-2619
VALVE OPERATION METHODAUTOMATIC
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 177-7374?
177-7374 is a VALVE,CHECK.
What is the NSN for 177-7374?
177-7374 is cataloged in the U.S. Government catalog under NSN 4820-01-533-6967. 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.