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W135231 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

W135231: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-674-2434, 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
W135231
NSN: 4820-01-674-2434
FSC: 4820 — Valves, Nonpowered
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
Part NumberW135231
NSN4820-01-674-2434
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: W135231 · 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
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
MLG15200G1 ILLUS NBR 1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MLG15193G1 ILLUS NBR 1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is W135231?
W135231 is a VALVE,SAFETY RELIEF.
What parts can replace W135231?
There are 2 known substitutes for W135231: MLG15200G1 ILLUS NBR 1, MLG15193G1 ILLUS NBR 1. Substitute compatibility should be verified for your specific system.
What is the NSN for W135231?
W135231 is cataloged in the U.S. Government catalog under NSN 4820-01-674-2434. This indicates validated use in U.S. government and defense supply chains.
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