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377969-4 — RETAINER,SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

377969-4: RETAINER,SEAT,VALVE.

The RETAINER,SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, overall_length: 0.312 INCHES NOMINAL IN, inside_diameter: 0.190 INCHES NOMINAL IN, outside_diameter: 0.375 INCHES NOMINAL IN, special_features: 0.062X0.062 SLOT ONE END, OPPOSITE END 0.062X45 DEG SEAT, nominal_thread_size: 0.312 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-598-8958, 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
377969-4
NSN: 4820-01-598-8958
FSC: 4820 — Valves, Nonpowered
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL
overall_length0.312 INCHES NOMINAL IN
inside_diameter0.190 INCHES NOMINAL IN
outside_diameter0.375 INCHES NOMINAL IN
special_features0.062X0.062 SLOT ONE END, OPPOSITE END 0.062X45 DEG SEAT
nominal_thread_size0.312 INCHES IN
end_item_identification5IN MOUNT MK30 MOD 50 LIQUID FILLING PUMP IN
part_name_assigned_by_controlling_agencyCAD PLATED STEEL CHECK VALVE SEAT
NSN4820-01-598-8958
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 377969-4 · 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
•
OUTSIDE DIAMETER: 0.375 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
INSIDE DIAMETER: 0.190 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER0.375 INCHES NOMINAL IN
OVERALL LENGTH0.312 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.312 INCHES IN
INSIDE DIAMETER0.190 INCHES NOMINAL IN
SPECIAL FEATURES0.062X0.062 SLOT ONE END, OPPOSITE END 0.062X45 DEG SEAT
PART NAME ASSIGNED BY CONTROLLING AGENCYCAD PLATED STEEL CHECK VALVE SEAT
END ITEM IDENTIFICATION5IN MOUNT MK30 MOD 50 LIQUID FILLING PUMP IN
MATERIALSTEEL
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 377969-4?
377969-4 is a RETAINER,SEAT,VALVE.
What is the NSN for 377969-4?
377969-4 is cataloged in the U.S. Government catalog under NSN 4820-01-598-8958. 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.