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218004629 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

218004629: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, special_features: E/IMISC REPAIRP, style_designator: STRAIGHT THRU FLANGED ENDS, mounting_facility: BRACKET(S), disk_loading_method: SPRING, flow_control_device: DISK. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-463-6925, 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
218004629
NSN: 4820-01-463-6925
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
special_featuresE/IMISC REPAIRP
style_designatorSTRAIGHT THRU FLANGED ENDS
mounting_facilityBRACKET(S)
disk_loading_methodSPRING
flow_control_deviceDISK
valve_operation_methodAUTOMATIC
end_item_identificationW/S LOS ANGELES CLASS SSN (688)
NSN4820-01-463-6925
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 218004629 · 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
•
FLOW CONTROL DEVICE: DISK
•
STYLE DESIGNATOR: STRAIGHT THRU FLANGED ENDS
•
DISK LOADING METHOD: SPRING
•
MOUNTING FACILITY: BRACKET(S)
•
MATERIAL: NICKEL ALLOY OVERALL
•
VALVE OPERATION METHOD: AUTOMATIC
TECHNICAL CHARACTERISTICS
FLOW CONTROL DEVICEDISK
STYLE DESIGNATORSTRAIGHT THRU FLANGED ENDS
DISK LOADING METHODSPRING
MOUNTING FACILITYBRACKET(S)
SPECIAL FEATURESE/IMISC REPAIRP
END ITEM IDENTIFICATIONW/S LOS ANGELES CLASS SSN (688)
MATERIALNICKEL ALLOY OVERALL
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 2
940-8785Reference document
Same NSN cross-reference
Reference document — Secondary reference
940-D-8785Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 218004629?
218004629 is a VALVE,SAFETY RELIEF.
What parts can replace 218004629?
There are 2 known substitutes for 218004629: 940-8785, 940-D-8785. Substitute compatibility should be verified for your specific system.
What is the NSN for 218004629?
218004629 is cataloged in the U.S. Government catalog under NSN 4820-01-463-6925. 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.