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88530-20 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

88530-20: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316, seat_angle: 15.0 DEGREES MAXIMUM, seat_radius: 0.250 INCHES MAXIMUM IN, overall_height: 4.2188 INCHES MAXIMUM IN, overall_length: 19.5625 INCHES MAXIMUM IN, special_features: W/S NIMITZ CLASS CVN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-444-7242, 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
88530-20
NSN: 4820-00-444-7242
NIINs: 004447242, 014669306, 014669542, 014669550
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL COMP 316
seat_angle15.0 DEGREES MAXIMUM
seat_radius0.250 INCHES MAXIMUM IN
overall_height4.2188 INCHES MAXIMUM IN
overall_length19.5625 INCHES MAXIMUM IN
special_featuresW/S NIMITZ CLASS CVN
style_designatorPLAIN
seat_angle_in_deg0.533 MAXIMUM
body_inside_diameter2.9375 INCHES MAXIMUM IN
body_outside_diameter4.2188 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
end_item_identification4"BOLTED BONNET GATE VALVE
NSN4820-00-444-7242
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 88530-20 · 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
SUBSTITUTES & CROSS-REFERENCES 9
B12-0064C-13MS 83309 42Reference document
Same NSN cross-reference
Reference document — Secondary reference
B12-0054B-13MSReference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-18110Reference document
Same NSN cross-reference
Reference document — Identification reference
MILV18110Reference document
Same NSN cross-reference
Reference document — Secondary reference
050473 FIG 2456-WE 4IN.Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2456-WE 4INReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 88530-20?
88530-20 is a SEAT,VALVE.
What parts can replace 88530-20?
There are 9 known substitutes for 88530-20: B12-0064C-13MS 83309 42, B12-0054B-13MS, MIL-DTL-18110 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 88530-20?
88530-20 is cataloged in the U.S. Government catalog under NSN 4820-00-444-7242. 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.