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45A391 P3 — DIAPHRAGM,VALVE,FLAT

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

45A391 P3: DIAPHRAGM,VALVE,FLAT.

The DIAPHRAGM,VALVE,FLAT is a the manufacturer industrial component. Key specifications include height: 2.130 INCHES NOMINAL IN, material: STEEL BODY, body_type: SOLID, body_style: STRAIGHT THRU, temp_rating: 180.0 FAHRENHEIT DEGF, drive_end_style: HEXAGON. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-206-4781, 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
45A391 P3
NSN: 4820-01-206-4781
NIINs: 012064781, 012064782, 012064783, 012071146, 012073680, 012075967, 012079267, 012081383
FSC: 4820 — Valves, Nonpowered
CAGE: 088A2 — C SYSTEMS LLC DBA CRAIG SYSTEMS DBA EASTERN TECHNOLOGIES (USA)
SPECIFICATIONS
height2.130 INCHES NOMINAL IN
materialSTEEL BODY
body_typeSOLID
body_styleSTRAIGHT THRU
temp_rating180.0 FAHRENHEIT DEGF
drive_end_styleHEXAGON
connection_stylePLAIN
outside_diameter0.940 INCHES NOMINAL IN
special_featuresWEAPON SYSTEM ESSENTIAL
flow_control_deviceSTEM AND INTEGRAL DISK
body_outside_diameter2.000 INCHES NOMINAL IN
end_connection_quantity2
NSN4820-01-206-4781
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 45A391 P3 · 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: 0.940 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
MATERIAL: ALUMINUM
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER0.940 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONFEAT
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
END ITEM IDENTIFICATIONHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
MATERIALALUMINUM
SUBSTITUTES & CROSS-REFERENCES 3
45A391-P46Reference document
Same NSN cross-reference
Reference document — Secondary reference
2CR867Reference document
Same NSN cross-reference
Reference document — Secondary reference
45A391P3 PIECE 11Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 45A391 P3?
45A391 P3 is a DIAPHRAGM,VALVE,FLAT.
What parts can replace 45A391 P3?
There are 3 known substitutes for 45A391 P3: 45A391-P46, 2CR867, 45A391P3 PIECE 11. Substitute compatibility should be verified for your specific system.
What is the NSN for 45A391 P3?
45A391 P3 is cataloged in the U.S. Government catalog under NSN 4820-01-206-4781. 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.