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Technical Data Sheet
PartsTable / COMPONENT / A1171TT
A1171TT ✓ 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,FLOW CONTROL is a the manufacturer industrial component. Key specifications include end_item_identification: HYDRAULIC VALVE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-441-2594, 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
A1171TT
NSN: 4820-00-441-2594
FSC: 4820
CAGE: 53154 — PORTLAND VALVE LLC (USA)
SPECIFICATIONS
end_item_identificationHYDRAULIC VALVE
NSN4820-00-441-2594
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A1171TT · 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 IDENTIFICATIONHYDRAULIC VALVE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
0349Interchangeable
interchangeable cross-reference
interchangeable
SEAGULL PROTRAIT FB-NInterchangeable
interchangeable cross-reference
interchangeable
037C50-0001Interchangeable
interchangeable cross-reference
interchangeable
A1171TT1 1-2INInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A1171TT?
A1171TT is a VALVE,FLOW CONTROL.
What parts can replace A1171TT?
There are 4 known substitutes for A1171TT: 0349, SEAGULL PROTRAIT FB-N, 037C50-0001 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A1171TT?
A1171TT is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-441-2594. 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