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1603AS143 — VALVE,EXPANSION

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

1603AS143: VALVE,EXPANSION.

The VALVE,EXPANSION is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, temp_rating: 140.0 FAHRENHEIT DEGF, media_for_which_designed: REFRIGERANT 22. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-309-2933, 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
1603AS143
NSN: 4820-01-309-2933
FSC: 4820 — Valves, Nonpowered
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING BODY
temp_rating140.0 FAHRENHEIT DEGF
end_connection_quantity2
media_for_which_designedREFRIGERANT 22
NSN4820-01-309-2933
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 1603AS143 · 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
•
TEMP RATING: 140.0 FAHRENHEIT DEGF
•
END CONNECTION QUANTITY: 2
•
MATERIAL: STEEL CORROSION RESISTING BODY
•
MEDIA FOR WHICH DESIGNED: REFRIGERANT 22
TECHNICAL CHARACTERISTICS
TEMP RATING140.0 FAHRENHEIT DEGF
END CONNECTION QUANTITY2
MATERIALSTEEL CORROSION RESISTING BODY
MEDIA FOR WHICH DESIGNEDREFRIGERANT 22
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

No substitute or cross-reference records for this part.

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 1603AS143?
1603AS143 is a VALVE,EXPANSION.
What is the NSN for 1603AS143?
1603AS143 is cataloged in the U.S. Government catalog under NSN 4820-01-309-2933. 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.