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Technical Data Sheet
PartsTable / COMPONENT / 803-2177934-X6XX-18
803-2177934-X6XX-18 ✓ 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 SEAT,VALVE is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-433-7044, 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
803-2177934-X6XX-18
NSN: 4820-00-433-7044
FSC: 4820
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
end_item_identificationVALVE ANL 1.50IPS 700 PSI SWLDG COPNI; VALVE 1.50IPS 700PSI SWLDG BRZ; VALVE GLB 1.50IPS 700PSI SWLDG CUNI; VALVE ANL STP 1.25IPS 700PSI SWLDG COP NI; VALVE GLB STP 1.50IPS 700PSI SB COP NI
NSN4820-00-433-7044
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 803-2177934-X6XX-18 · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
2620-902 ASSY CInterchangeable
interchangeable cross-reference
interchangeable
845-1889587ASSYCFInterchangeable
interchangeable cross-reference
interchangeable
2620-902Interchangeable
interchangeable cross-reference
interchangeable
803-2177934-X6XX-18Interchangeable
interchangeable cross-reference
interchangeable
803-2177934-X7XX-18Interchangeable
interchangeable cross-reference
interchangeable
803-2177934-X7XX-18L1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 803-2177934-X6XX-18?
803-2177934-X6XX-18 is a SEAT,VALVE.
What parts can replace 803-2177934-X6XX-18?
There are 6 known substitutes for 803-2177934-X6XX-18: 2620-902 ASSY C, 845-1889587ASSYCF, 2620-902 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-2177934-X6XX-18?
803-2177934-X6XX-18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-433-7044. 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