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CMK43K4NA — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

CMK43K4NA: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flange_diameter: 5.230 INCHES MINIMUM AND 5.245 INCHES MAXIMUM IN, style_designator: PLAIN FLANGED, under_flange_height: 0.437 INCHES NOMINAL IN, body_inside_diameter: 0.750 INCHES NOMINAL IN, fsc_application_data: VALVE,AIR COMPRESSOR. This part is cataloged in the U.S.

Government catalog under NSN 4810-00-216-7724, 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
CMK43K4NA
NSN: 4810-00-216-7724
FSC: 4810 — Valves, Powered
CAGE: 830Q4 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS-WRIGHT STEAM AND AIR SOLUTIONS DIV STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_diameter5.230 INCHES MINIMUM AND 5.245 INCHES MAXIMUM IN
style_designatorPLAIN FLANGED
under_flange_height0.437 INCHES NOMINAL IN
body_inside_diameter0.750 INCHES NOMINAL IN
fsc_application_dataVALVE,AIR COMPRESSOR
body_outside_diameter4.793 INCHES MINIMUM AND 4.808 INCHES MAXIMUM IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.313 INCHES NOMINAL IN
NSN4810-00-216-7724
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: CMK43K4NA · 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: 0.313 INCHES NOMINAL IN
•
FLANGE DIAMETER: 5.230 INCHES MINIMUM AND 5.245 INCHES MAXIMUM IN
•
FSC APPLICATION DATA: VALVE,AIR COMPRESSOR
•
BODY OUTSIDE DIAMETER: 4.793 INCHES MINIMUM AND 4.808 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.437 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.313 INCHES NOMINAL IN
FLANGE DIAMETER5.230 INCHES MINIMUM AND 5.245 INCHES MAXIMUM IN
FSC APPLICATION DATAVALVE,AIR COMPRESSOR
BODY OUTSIDE DIAMETER4.793 INCHES MINIMUM AND 4.808 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.750 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.437 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SEATING SURFACE SHAPEFLAT
OTHER ITEMS IN FSC 4810 — Valves, Powered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4810-00-001-1247 4810-00-001-4499 4810-00-001-4531 4810-00-001-4532 4810-00-001-4554 4810-00-001-4555 4810-00-001-4556 4810-00-001-4611
SUBSTITUTES & CROSS-REFERENCES 10
185463PC119Reference document
Same NSN cross-reference
Reference document — Secondary reference
185413PC119Reference document
Same NSN cross-reference
Reference document — Secondary reference
187971PC119Reference document
Same NSN cross-reference
Reference document — Secondary reference
D3766RPPReference document
Same NSN cross-reference
Reference document — Secondary reference
185471PC119Reference document
Same NSN cross-reference
Reference document — Secondary reference
166433PC119Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CMK43K4NA?
CMK43K4NA is a SEAT,VALVE.
What parts can replace CMK43K4NA?
There are 10 known substitutes for CMK43K4NA: 185463PC119, 185413PC119, 187971PC119 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for CMK43K4NA?
CMK43K4NA is cataloged in the U.S. Government catalog under NSN 4810-00-216-7724. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.