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A4A0-4 ✓ 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

VALVE,REGULATING,FLUID PRESSURE. Key specifications include end_item_identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-428-6887, 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
A4A0-4
NSN: 4820-01-428-6887
FSC: 4820
CAGE: 91051 — PARKER-HANNIFIN CORPORATION DBA REFRIGERATION SPECIALTIES DIV REFRIGERATING SPECIALTIES DIVISION (USA)
SPECIFICATIONS
end_item_identificationSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
NSN4820-01-428-6887
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A4A0-4 · 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 IDENTIFICATIONSTRATEGIC SEALIFT CONVERSION SHIPS CLASS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
MHE-1211A-1PInterchangeable
interchangeable cross-reference
interchangeable
330-J57-701Interchangeable
interchangeable cross-reference
interchangeable
0AB941029AInterchangeable
interchangeable cross-reference
interchangeable
PL CM/10-94 IT9Interchangeable
interchangeable cross-reference
interchangeable
7761Interchangeable
interchangeable cross-reference
interchangeable
F7761Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A4A0-4?
A4A0-4 is a VALVE,REGULATING,FLUID PRESSURE.
What parts can replace A4A0-4?
There are 10 known substitutes for A4A0-4: MHE-1211A-1P, 330-J57-701, 0AB941029A and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A4A0-4?
A4A0-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-428-6887. 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