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PartsTable / COMPONENT / D15-651PPC677
D15-651PPC677 ✓ 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. Key specifications include material: STEEL BODY, thread_class: 3A SINGLE THREADED PORTION A, thread_length: 0.750 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 2.125 INCHES NOMINAL IN, hardness_rating: 202.0 BRINELL STANDARD MINIMUM BODY, style_designator: THREADED FLANGED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-218-6077, 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
D15-651PPC677
NSN: 4810-00-218-6077
FSC: 4810
CAGE: 90099 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV MARINE SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL BODY
thread_class3A SINGLE THREADED PORTION A
thread_length0.750 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter2.125 INCHES NOMINAL IN
hardness_rating202.0 BRINELL STANDARD MINIMUM BODY
style_designatorTHREADED FLANGED
nominal_thread_size1.750 INCHES SINGLE THREADED PORTION IN
under_flange_height0.875 INCHES NOMINAL IN
body_inside_diameter1.313 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch12 SINGLE THREADED PORTION
thread_series_designatorUN SINGLE THREADED PORTION
NSN4810-00-218-6077
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: D15-651PPC677 · 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
•
FLANGE DIAMETER: 2.125 INCHES NOMINAL IN
•
MATERIAL: COBALT ALLOY SEAT
•
SEATING SURFACE SHAPE: ANGULAR
•
NOMINAL THREAD SIZE: 1.750 INCHES SINGLE THREADED PORTION IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-853,CLASS 3,TYPE A MIL SPEC SINGLE MATERIAL RESPONSE BODY
•
STYLE DESIGNATOR: THREADED FLANGED
•
HARDNESS RATING: 202.0 BRINELL STANDARD MINIMUM BODY
•
THREAD SERIES DESIGNATOR: UN SINGLE THREADED PORTION
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE DIAMETER2.125 INCHES NOMINAL IN
MATERIALCOBALT ALLOY SEAT
SEATING SURFACE SHAPEANGULAR
NOMINAL THREAD SIZE1.750 INCHES SINGLE THREADED PORTION IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-853,CLASS 3,TYPE A MIL SPEC SINGLE MATERIAL RESPONSE BODY
STYLE DESIGNATORTHREADED FLANGED
HARDNESS RATING202.0 BRINELL STANDARD MINIMUM BODY
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
THREAD CLASS3A SINGLE THREADED PORTION A
THREAD LENGTH0.750 INCHES NOMINAL SINGLE THREADED PORTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
712731-7Interchangeable
interchangeable cross-reference
interchangeable
99-58Interchangeable
interchangeable cross-reference
interchangeable
K1011-7Interchangeable
interchangeable cross-reference
interchangeable
JHP110-30Interchangeable
interchangeable cross-reference
interchangeable
CFR40114Interchangeable
interchangeable cross-reference
interchangeable
PEI 7976Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D15-651PPC677?
D15-651PPC677 is a SEAT,VALVE.
What parts can replace D15-651PPC677?
There are 16 known substitutes for D15-651PPC677: 712731-7, 99-58, K1011-7 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D15-651PPC677?
D15-651PPC677 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4810-00-218-6077. 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