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D15-495PPC921 — Technical Data Sheet

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— · 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 CAP,VALVE is a the manufacturer industrial component. Key specifications include valve_type_for_which_designed: CHECK, valve_model_number_for_which_designed: D15-405B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-218-6031, 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
D15-495PPC921
NSN: 4820-00-218-6031
FSC: 4820
CAGE: 90099 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV MARINE SYSTEMS (USA)
SPECIFICATIONS
valve_type_for_which_designedCHECK
valve_model_number_for_which_designedD15-405B
NSN4820-00-218-6031
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D15-495PPC921 · 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
•
VALVE MODEL NUMBER FOR WHICH DESIGNED: D15-405B
•
VALVE TYPE FOR WHICH DESIGNED: CHECK
TECHNICAL CHARACTERISTICS (FLIS)
VALVE MODEL NUMBER FOR WHICH DESIGNEDD15-405B
VALVE TYPE FOR WHICH DESIGNEDCHECK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
D15-560NPC921Interchangeable
Same NIIN cross-reference
interchangeable
D15-770LPC566Interchangeable
Same NIIN cross-reference
interchangeable
D15-597LPC676Interchangeable
Same NIIN cross-reference
interchangeable
D15-544NPC921Interchangeable
Same NIIN cross-reference
interchangeable
D15-770SPC566Interchangeable
Same NIIN cross-reference
interchangeable
D15-551PPC781Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D15-495PPC921?
D15-495PPC921 is a CAP,VALVE.
What parts can replace D15-495PPC921?
There are 8 known substitutes for D15-495PPC921: D15-560NPC921, D15-770LPC566, D15-597LPC676 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D15-495PPC921?
D15-495PPC921 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-218-6031. 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: August 2026