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010.303.0139 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

010.303.0139: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 SEAT, special_features: PART NAME ASSIGNED BY CONTROLLING AGENCY IS SEMI-NOZZLE, end_item_identification: ANGLE RELIEF VALVE P/N NMP-1144. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-504-4357, 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
010.303.0139
NSN: 4820-01-504-4357
FSC: 4820 — Valves, Nonpowered
CAGE: 15187 — EMERSON AUTOMATION SOLUTIONS FINAL CONTROL US LP DIV NAVY PRODUCT TEAM (USA)
SPECIFICATIONS
materialSTEEL COMP 303 SEAT
special_featuresPART NAME ASSIGNED BY CONTROLLING AGENCY IS SEMI-NOZZLE
end_item_identificationANGLE RELIEF VALVE P/N NMP-1144
NSN4820-01-504-4357
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 010.303.0139 · 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
•
MATERIAL: STEEL COMP 303 SEAT
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESPART NAME ASSIGNED BY CONTROLLING AGENCY IS SEMI-NOZZLE
END ITEM IDENTIFICATIONANGLE RELIEF VALVE P/N NMP-1144
MATERIALSTEEL COMP 303 SEAT
SUBSTITUTES & CROSS-REFERENCES 2
NMP-1144Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
NMP-1144 PC 23Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 010.303.0139?
010.303.0139 is a SEAT,VALVE.
What parts can replace 010.303.0139?
There are 2 known substitutes for 010.303.0139: NMP-1144, NMP-1144 PC 23. Substitute compatibility should be verified for your specific system.
What is the NSN for 010.303.0139?
010.303.0139 is cataloged in the U.S. Government catalog under NSN 4820-01-504-4357. 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.