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PartsTable / COMPONENT / D15-631RPC644-674-972
D15-631RPC644-674-972 ✓ 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 DISK,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, seat_angle: 40.0 DEGREES NOMINAL, overall_height: 3.812 INCHES NOMINAL IN, shank_diameter: 7.747 INCHES NOMINAL IN, flange_diameter: 1.719 INCHES NOMINAL IN, style_designator: POPPET. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-218-6054, 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
D15-631RPC644-674-972
NSN: 4820-00-218-6054
FSC: 4820
CAGE: 80231 — WESTINGHOUSE ELECTRIC CORP STURTEVANT DIV (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
seat_angle40.0 DEGREES NOMINAL
overall_height3.812 INCHES NOMINAL IN
shank_diameter7.747 INCHES NOMINAL IN
flange_diameter1.719 INCHES NOMINAL IN
style_designatorPOPPET
media_for_which_designedSTEAM
NSN4820-00-218-6054
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D15-631RPC644-674-972 · 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
•
MEDIA FOR WHICH DESIGNED: STEAM
•
FLANGE DIAMETER: 1.719 INCHES NOMINAL IN
•
SHANK DIAMETER: 7.747 INCHES NOMINAL IN
•
STYLE DESIGNATOR: POPPET
•
SEAT ANGLE: 40.0 DEGREES NOMINAL
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS (FLIS)
MEDIA FOR WHICH DESIGNEDSTEAM
OVERALL HEIGHT3.812 INCHES NOMINAL IN
FLANGE DIAMETER1.719 INCHES NOMINAL IN
SHANK DIAMETER7.747 INCHES NOMINAL IN
STYLE DESIGNATORPOPPET
SEAT ANGLE40.0 DEGREES NOMINAL
MATERIALSTEEL CORROSION RESISTING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
617226-11Interchangeable
interchangeable cross-reference
interchangeable
8835Interchangeable
interchangeable cross-reference
interchangeable
8630-38-21Interchangeable
interchangeable cross-reference
interchangeable
7407-25-26Interchangeable
interchangeable cross-reference
interchangeable
879PBInterchangeable
interchangeable cross-reference
interchangeable
A100-042-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D15-631RPC644-674-972?
D15-631RPC644-674-972 is a DISK,VALVE.
What parts can replace D15-631RPC644-674-972?
There are 17 known substitutes for D15-631RPC644-674-972: 617226-11, 8835, 8630-38-21 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D15-631RPC644-674-972?
D15-631RPC644-674-972 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-218-6054. 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