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Technical Data Sheet
PartsTable / COMPONENT / 581R779H04
581R779H04 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The VALVE ASSEMBLY is a the manufacturer industrial component. Key specifications include end_item_identification: AN/ALQ-131 COMMON. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-055-0959, 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
581R779H04
NSN: 4820-01-055-0959
FSC: 4820
CAGE: 97942 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
end_item_identificationAN/ALQ-131 COMMON
NSN4820-01-055-0959
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 581R779H04 · 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
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONAN/ALQ-131 COMMON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
4529DInterchangeable
interchangeable cross-reference
interchangeable
1035-4-05Interchangeable
interchangeable cross-reference
interchangeable
4715-4 TINInterchangeable
interchangeable cross-reference
interchangeable
581R779H02Interchangeable
Same NIIN cross-reference
interchangeable
10512-4Interchangeable
Same NIIN cross-reference
interchangeable
581R779H03Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 581R779H04?
581R779H04 is a VALVE ASSEMBLY.
What parts can replace 581R779H04?
There are 6 known substitutes for 581R779H04: 4529D, 1035-4-05, 4715-4 TIN and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 581R779H04?
581R779H04 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-055-0959. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026