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A48503 — DISK,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

A48503: DISK,VALVE.

The DISK,VALVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, special_features: INCLUDES NICKEL COPPER DISK NUT 1; POLYTETRAFLUOROETHYLENE INSERT 1; POLYTETRAFLUOROETHYLENE INSERT RETAINER. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-197-2088, 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
A48503
NSN: 4820-01-197-2088
NIINs: 011972088, 013237688
FSC: 4820 — Valves, Nonpowered
CAGE: 11859 — HUNT VALVE COMPANY, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY
special_featuresINCLUDES NICKEL COPPER DISK NUT 1; POLYTETRAFLUOROETHYLENE INSERT 1; POLYTETRAFLUOROETHYLENE INSERT RETAINER
NSN4820-01-197-2088
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A48503 · 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: COPPER ALLOY
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESINCLUDES NICKEL COPPER DISK NUT 1; POLYTETRAFLUOROETHYLENE INSERT 1; POLYTETRAFLUOROETHYLENE INSERT RETAINER
MATERIALCOPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 2
A48503MEB-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
D48671 ITEM 7Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 A48503?
A48503 is a DISK,VALVE.
What parts can replace A48503?
There are 2 known substitutes for A48503: A48503MEB-1, D48671 ITEM 7. Substitute compatibility should be verified for your specific system.
What is the NSN for A48503?
A48503 is cataloged in the U.S. Government catalog under NSN 4820-01-197-2088. 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.