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503-0127-00 — VALVE,EXPANSION

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

503-0127-00: VALVE,EXPANSION.

The VALVE,EXPANSION is a the manufacturer industrial component. Key specifications include phase: SINGLE, length: 4.875 INCHES MINIMUM AND 5.000 INCHES MAXIMUM IN, diameter: 7.000 INCHES NOMINAL IN, material: ALUMINUM OVERALL, drive_type: DIRECT, air_flow_rate: 350.0 CUBIC FEET PER MINUTE MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-043-7250, 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
503-0127-00
NSN: 4820-01-043-7250
FSC: 4820 — Valves, Nonpowered
CAGE: 14569 — COPELAND CORP (USA)
SPECIFICATIONS
phaseSINGLE
length4.875 INCHES MINIMUM AND 5.000 INCHES MAXIMUM IN
diameter7.000 INCHES NOMINAL IN
materialALUMINUM OVERALL
quantity1
drive_typeDIRECT
air_flow_rate350.0 CUBIC FEET PER MINUTE MAXIMUM
flow_directionOUTWARD
inclosure_typeFULLY INCLOSED
prime_mover_typeELECTRIC MOTOR
style_designatorFIXED
speed_adjustmentsSINGLE SPEED
NSN4820-01-043-7250
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 503-0127-00 · 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 2
282309696Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2187756Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 503-0127-00?
503-0127-00 is a VALVE,EXPANSION.
What parts can replace 503-0127-00?
There are 2 known substitutes for 503-0127-00: 282309696, 2187756. Substitute compatibility should be verified for your specific system.
What is the NSN for 503-0127-00?
503-0127-00 is cataloged in the U.S. Government catalog under NSN 4820-01-043-7250. 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.