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NB31911772 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NB31911772: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include outside_diameter: 3.500 INCHES NOMINAL IN, material_thickness: 0.125 INCHES NOMINAL IN, center_hole_diameter: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-248-3715, 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
NB31911772
NSN: 4820-00-248-3715
FSC: 4820 — Valves, Nonpowered
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
outside_diameter3.500 INCHES NOMINAL IN
material_thickness0.125 INCHES NOMINAL IN
center_hole_diameter0.500 INCHES NOMINAL IN
NSN4820-00-248-3715
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NB31911772 · 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
•
OUTSIDE DIAMETER: 3.500 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 0.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER3.500 INCHES NOMINAL IN
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
CENTER HOLE DIAMETER0.500 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
19117Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 NB31911772?
NB31911772 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace NB31911772?
There is 1 known substitute for NB31911772: 19117. Substitute compatibility should be verified for your specific system.
What is the NSN for NB31911772?
NB31911772 is cataloged in the U.S. Government catalog under NSN 4820-00-248-3715. 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.