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Technical Data Sheet
PartsTable / COMPONENT / A3550
A3550 ✓ 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,LINEAR,DIRECTIONAL CONTROL. Key specifications include body_material: STEEL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-922-7049, 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
A3550
NSN: 4820-00-922-7049
FSC: 4820
CAGE: 46717 — PETTIBONE LLC (USA)
SPECIFICATIONS
body_materialSTEEL
spool_quantity2
end_connection_quantity6
NSN4820-00-922-7049
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A3550 · 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
•
SPOOL QUANTITY: 2
•
END CONNECTION QUANTITY: 6
•
BODY MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
SPOOL QUANTITY2
END CONNECTION QUANTITY6
BODY MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
A3758Interchangeable
interchangeable cross-reference
interchangeable
00606296003291Interchangeable
interchangeable cross-reference
interchangeable
700037Interchangeable
interchangeable cross-reference
interchangeable
A3550Interchangeable
interchangeable cross-reference
interchangeable
V37DD33MILInterchangeable
Same NIIN cross-reference
interchangeable
V37DD33Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A3550?
A3550 is a VALVE,LINEAR,DIRECTIONAL CONTROL.
What parts can replace A3550?
There are 7 known substitutes for A3550: A3758, 00606296003291, 700037 and 4 more. Substitute compatibility should be verified for your specific system.
Is A3550 still available?
A3550 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