PartsTable
Technical Data Sheet
Download PDF

A-11503 — A-11503

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

A-11503: A-11503.

The A-11503 is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 464 OVERALL, style_designator: THREADED FLANGED. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-193-7709, 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
MRO→ MRO_GENERAL→ A-11503
NSN: 4820-01-193-7709
NIINs: 011937709, 013114102
FSC: 4820 — Valves, Nonpowered
CAGE: 16712 — SIEMENS ENERGY, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY 464 OVERALL
style_designatorTHREADED FLANGED
NSN4820-01-193-7709
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A-11503 · 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
•
STYLE DESIGNATOR: THREADED FLANGED
•
MATERIAL: COPPER ALLOY 464 OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORTHREADED FLANGED
MATERIALCOPPER ALLOY 464 OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
EW-225BReference document
Same NSN cross-reference
Reference document — Secondary reference
FIG 11-39 PIECE 2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy A-11503?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is A-11503?
A-11503 is a A-11503. It is classified as a MRO (MRO_GENERAL).
What parts can replace A-11503?
There are 2 known substitutes for A-11503: EW-225B, FIG 11-39 PIECE 2. Substitute compatibility should be verified for your specific system.
What is the NSN for A-11503?
A-11503 is cataloged in the U.S. Government catalog under NSN 4820-01-193-7709. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — A-11503

✓ 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.