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730A142 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

730A142: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: RUBBER BUNA N SEAT, special_features: SEATS MUST BE COLOR STRIPED FOR MATERIAL PER NORRIS SPEC 815-001, style_designator: PLAIN, body_outside_diameter: 6.865 INCHES MINIMUM AND 6.873 INCHES MAXIMUM IN, seating_surface_shape: FLAT. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-956-8932, 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
730A142
NSN: 4820-00-956-8932
FSC: 4820 — Valves, Nonpowered
CAGE: 91363 — NORRISEAL NORRIS VALUES DIV DBA DOVER CO (USA)
SPECIFICATIONS
materialRUBBER BUNA N SEAT
special_featuresSEATS MUST BE COLOR STRIPED FOR MATERIAL PER NORRIS SPEC 815-001
style_designatorPLAIN
body_outside_diameter6.865 INCHES MINIMUM AND 6.873 INCHES MAXIMUM IN
seating_surface_shapeFLAT
NSN4820-00-956-8932
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 730A142 · 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
•
BODY OUTSIDE DIAMETER: 6.865 INCHES MINIMUM AND 6.873 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL: RUBBER BUNA N SEAT
•
SEATING SURFACE SHAPE: FLAT
TECHNICAL CHARACTERISTICS
BODY OUTSIDE DIAMETER6.865 INCHES MINIMUM AND 6.873 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
SPECIAL FEATURESSEATS MUST BE COLOR STRIPED FOR MATERIAL PER NORRIS SPEC 815-001
MATERIALRUBBER BUNA N SEAT
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 2
52730A142Reference document
Same NSN cross-reference
Reference document — Secondary reference
6870-18AReference 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 730A142?
730A142 is a SEAT,VALVE.
What parts can replace 730A142?
There are 2 known substitutes for 730A142: 52730A142, 6870-18A. Substitute compatibility should be verified for your specific system.
What is the NSN for 730A142?
730A142 is cataloged in the U.S. Government catalog under NSN 4820-00-956-8932. 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.