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531-6777169 — VALVE,SAFETY RELIEF

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

531-6777169: VALVE,SAFETY RELIEF.

The VALVE,SAFETY RELIEF is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY BODY, nominal_width: 4.160 INCHES ALL ENDS IN, nominal_length: 10.250 INCHES ALL ENDS IN, style_designator: STRAIGHT THRU, operating_pressure: 1200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, maximum_operating_temp: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-408-1611, 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
531-6777169
NSN: 4820-01-408-1611
FSC: 4820 — Valves, Nonpowered
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY BODY
nominal_width4.160 INCHES ALL ENDS IN
nominal_length10.250 INCHES ALL ENDS IN
style_designatorSTRAIGHT THRU
operating_pressure1200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
maximum_operating_temp150.0 FAHRENHEIT SINGLE RESPONSE DEGF
NSN4820-01-408-1611
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 531-6777169 · 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
•
NOMINAL LENGTH: 10.250 INCHES ALL ENDS IN
•
STYLE DESIGNATOR: STRAIGHT THRU
•
OPERATING PRESSURE: 1200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MAXIMUM OPERATING TEMP: 150.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
NOMINAL WIDTH: 4.160 INCHES ALL ENDS IN
•
MATERIAL: NICKEL ALLOY BODY
TECHNICAL CHARACTERISTICS
NOMINAL LENGTH10.250 INCHES ALL ENDS IN
STYLE DESIGNATORSTRAIGHT THRU
OPERATING PRESSURE1200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MAXIMUM OPERATING TEMP150.0 FAHRENHEIT SINGLE RESPONSE DEGF
NOMINAL WIDTH4.160 INCHES ALL ENDS IN
MATERIALNICKEL ALLOY BODY
SUBSTITUTES & CROSS-REFERENCES 3
19910 ASSEMBLY 47615-3111SSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
47615-3111S ANDReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
47615-3111SReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 531-6777169?
531-6777169 is a VALVE,SAFETY RELIEF.
What parts can replace 531-6777169?
There are 3 known substitutes for 531-6777169: 19910 ASSEMBLY 47615-3111S, 47615-3111S AND, 47615-3111S. Substitute compatibility should be verified for your specific system.
What is the NSN for 531-6777169?
531-6777169 is cataloged in the U.S. Government catalog under NSN 4820-01-408-1611. 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.