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30953-03 — CHAMBER,DIAPHRAGM

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

30953-03: CHAMBER,DIAPHRAGM.

The CHAMBER,DIAPHRAGM is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-00-086-9901, 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
30953-03
NSN: 4820-00-086-9901
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
Part Number30953-03
NSN4820-00-086-9901
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 30953-03 · 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
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,8.006 IN. O/A H,5.532 IN. O/A W,3.365 IN. DIA AT BASE,W/4 UNTHD HOLES 0.564 IN. DIA EQUALLY SPACED ON 2.254 IN. BOLT CIRCLE DIA,ONE HOLE AT TOP OF BODY 0.768 IN. DIA,TWO HOLES IN BODY 0.625 IN. DIA SPACED 180.0 DEG APART,4 HOLES IN BODY 0.568 IN. DIA EQUALLY SPACED ON 3.272 IN. BOLT CIRCLE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,8.006 IN. O/A H,5.532 IN. O/A W,3.365 IN. DIA AT BASE,W/4 UNTHD HOLES 0.564 IN. DIA EQUALLY SPACED ON 2.254 IN. BOLT CIRCLE DIA,ONE HOLE AT TOP OF BODY 0.768 IN. DIA,TWO HOLES IN BODY 0.625 IN. DIA SPACED 180.0 DEG APART,4 HOLES IN BODY 0.568 IN. DIA EQUALLY SPACED ON 3.272 IN. BOLT CIRCLE IN
SUBSTITUTES & CROSS-REFERENCES 2
30953-03 72Reference document
Same NSN cross-reference
Reference document — Secondary reference
14219Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 30953-03?
30953-03 is a CHAMBER,DIAPHRAGM.
What parts can replace 30953-03?
There are 2 known substitutes for 30953-03: 30953-03 72, 14219. Substitute compatibility should be verified for your specific system.
What is the NSN for 30953-03?
30953-03 is cataloged in the U.S. Government catalog under NSN 4820-00-086-9901. 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.