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45A391P5 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

45A391P5: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include material: RUBBER, temp_rating: 180.0 FAHRENHEIT NOMINAL DEGF, hole_diameter: 0.370 INCHES NOMINAL IN, overall_height: 0.281 INCHES NOMINAL IN, inside_diameter: 1.596 INCHES NOMINAL IN, pressure_rating: 175.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-208-1931, 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
45A391P5
NSN: 4820-01-208-1931
NIINs: 012081931, 012082065, 012082097, 012082141, 012082149, 012082219, 012082224
FSC: 4820 — Valves, Nonpowered
CAGE: 088A2 — C SYSTEMS LLC DBA CRAIG SYSTEMS DBA EASTERN TECHNOLOGIES (USA)
SPECIFICATIONS
materialRUBBER
temp_rating180.0 FAHRENHEIT NOMINAL DEGF
hole_diameter0.370 INCHES NOMINAL IN
overall_height0.281 INCHES NOMINAL IN
inside_diameter1.596 INCHES NOMINAL IN
pressure_rating175.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
outside_diameter2.500 INCHES NOMINAL IN
special_featuresWEAPON SYSTEM ESSENTIAL
style_designatorPLAIN
bolt_hole_quantity8
material_thickness0.048 INCHES NOMINAL IN
bolt_circle_diameter5.620 INCHES NOMINAL IN
NSN4820-01-208-1931
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 45A391P5 · 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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CRITICALITY CODE JUSTIFICATION: FEAT
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONFEAT
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
END ITEM IDENTIFICATIONHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
SUBSTITUTES & CROSS-REFERENCES 2
45A391-P15Reference document
Same NSN cross-reference
Reference document — Secondary reference
2CR888Reference 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 45A391P5?
45A391P5 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 45A391P5?
There are 2 known substitutes for 45A391P5: 45A391-P15, 2CR888. Substitute compatibility should be verified for your specific system.
What is the NSN for 45A391P5?
45A391P5 is cataloged in the U.S. Government catalog under NSN 4820-01-208-1931. 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.