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PartsTable / COMPONENT / A51H9081-3
A51H9081-3 ✓ 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,RESTRICTOR CHECK is a the manufacturer industrial component. Key specifications include style_designator: STRAIGHT THRU, valve_operation_method: AUTOMATIC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-135-1674, 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
A51H9081-3
NSN: 4820-01-135-1674
FSC: 4820
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
style_designatorSTRAIGHT THRU
valve_operation_methodAUTOMATIC
NSN4820-01-135-1674
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A51H9081-3 · 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
•
VALVE OPERATION METHOD: AUTOMATIC
•
STYLE DESIGNATOR: STRAIGHT THRU
TECHNICAL CHARACTERISTICS (FLIS)
VALVE OPERATION METHODAUTOMATIC
STYLE DESIGNATORSTRAIGHT THRU
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
A281465Interchangeable
interchangeable cross-reference
interchangeable
61-242Interchangeable
interchangeable cross-reference
interchangeable
839397Interchangeable
interchangeable cross-reference
interchangeable
6124BInterchangeable
interchangeable cross-reference
interchangeable
407137Interchangeable
interchangeable cross-reference
interchangeable
746290-6 & 499252-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A51H9081-3?
A51H9081-3 is a VALVE,RESTRICTOR CHECK.
What parts can replace A51H9081-3?
There are 15 known substitutes for A51H9081-3: A281465, 61-242, 839397 and 12 more. Substitute compatibility should be verified for your specific system.
Is A51H9081-3 still available?
A51H9081-3 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026