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Technical Data Sheet
PartsTable / COMPONENT / C2921K
C2921K ✓ 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: NICKEL ALLOY, flange_diameter: 0.435 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, under_flange_height: 0.060 INCHES NOMINAL IN, body_inside_diameter: 0.123 INCHES NOMINAL IN, body_outside_diameter: 0.280 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-711-6700, 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
C2921K
NSN: 4820-00-711-6700
FSC: 4820
CAGE: 86184 — GRISWOLD INDUSTRIES DBA CLA-VAL CO (USA)
SPECIFICATIONS
materialNICKEL ALLOY
flange_diameter0.435 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
under_flange_height0.060 INCHES NOMINAL IN
body_inside_diameter0.123 INCHES NOMINAL IN
body_outside_diameter0.280 INCHES NOMINAL IN
seating_surface_shapeFLAT
seal_accommodation_typeGROOVED
criticality_code_justificationZZZY
flange_seat_to_disk_end_height0.065 INCHES NOMINAL IN
reference_number_differentiating_characteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
NSN4820-00-711-6700
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: C2921K · 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 SEAT TO DISK END HEIGHT: 0.065 INCHES NOMINAL IN
•
SEATING SURFACE SHAPE: FLAT
•
FLANGE DIAMETER: 0.435 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.123 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
MATERIAL: NICKEL ALLOY OVERALL
•
UNDER FLANGE HEIGHT: 0.060 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.280 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE SEAT TO DISK END HEIGHT0.065 INCHES NOMINAL IN
SEATING SURFACE SHAPEFLAT
FLANGE DIAMETER0.435 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.123 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
MATERIALNICKEL ALLOY OVERALL
UNDER FLANGE HEIGHT0.060 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.280 INCHES NOMINAL IN
SEAL ACCOMMODATION TYPEGROOVED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
40220Interchangeable
interchangeable cross-reference
interchangeable
43000065Interchangeable
interchangeable cross-reference
interchangeable
43000065-000Interchangeable
interchangeable cross-reference
interchangeable
C2921KInterchangeable
interchangeable cross-reference
interchangeable
64785 PC 8Interchangeable
interchangeable cross-reference
interchangeable
C2921Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C2921K?
C2921K is a SEAT,VALVE.
What parts can replace C2921K?
There are 6 known substitutes for C2921K: 40220, 43000065, 43000065-000 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C2921K?
C2921K is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-711-6700. 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