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22K4R — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

22K4R: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, flange_diameter: 2.668 INCHES MINIMUM AND 2.683 INCHES MAXIMUM IN, style_designator: PLAIN FLANGED, under_flange_height: 0.355 INCHES NOMINAL IN, body_inside_diameter: 0.522 INCHES NOMINAL IN, fsc_application_data: VALVE,AIR COMPRESSOR. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-413-2146, 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
22K4R
NSN: 4820-00-413-2146
FSC: 4820 — Valves, Nonpowered
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
materialIRON OVERALL
flange_diameter2.668 INCHES MINIMUM AND 2.683 INCHES MAXIMUM IN
style_designatorPLAIN FLANGED
under_flange_height0.355 INCHES NOMINAL IN
body_inside_diameter0.522 INCHES NOMINAL IN
fsc_application_dataVALVE,AIR COMPRESSOR
body_outside_diameter2.425 INCHES NOMINAL IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.281 INCHES NOMINAL IN
NSN4820-00-413-2146
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 22K4R · 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: 0.281 INCHES NOMINAL IN
•
FLANGE DIAMETER: 2.668 INCHES MINIMUM AND 2.683 INCHES MAXIMUM IN
•
FSC APPLICATION DATA: VALVE,AIR COMPRESSOR
•
BODY OUTSIDE DIAMETER: 2.425 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN FLANGED
•
BODY INSIDE DIAMETER: 0.522 INCHES NOMINAL IN
•
UNDER FLANGE HEIGHT: 0.355 INCHES NOMINAL IN
•
MATERIAL: IRON OVERALL
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.281 INCHES NOMINAL IN
FLANGE DIAMETER2.668 INCHES MINIMUM AND 2.683 INCHES MAXIMUM IN
FSC APPLICATION DATAVALVE,AIR COMPRESSOR
BODY OUTSIDE DIAMETER2.425 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN FLANGED
BODY INSIDE DIAMETER0.522 INCHES NOMINAL IN
UNDER FLANGE HEIGHT0.355 INCHES NOMINAL IN
MATERIALIRON OVERALL
SEATING SURFACE SHAPEFLAT
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 7
22K4Reference document
Same NSN cross-reference
Reference document — Secondary reference
N546PC78Reference document
Same NSN cross-reference
Reference document — Secondary reference
N550PC78Reference document
Same NSN cross-reference
Reference document — Secondary reference
N305PC8Reference document
Same NSN cross-reference
Reference document — Secondary reference
N470PC78Reference document
Same NSN cross-reference
Reference document — Secondary reference
N302PC8Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 22K4R?
22K4R is a SEAT,VALVE.
What parts can replace 22K4R?
There are 7 known substitutes for 22K4R: 22K4, N546PC78, N550PC78 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 22K4R?
22K4R is cataloged in the U.S. Government catalog under NSN 4820-00-413-2146. 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.