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8B391-000 — SENSOR ASSEMBLY,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

8B391-000: SENSOR ASSEMBLY,VALVE.

The SENSOR ASSEMBLY,VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4820-01-144-3664, 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
8B391-000
NSN: 4820-01-144-3664
FSC: 4820 — Valves, Nonpowered
CAGE: 78493 — STANDARD-THOMSON CORPORATION (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTAINLESS STEEL; 4.625 IN. LG; 4.000 IN. H; 2.250. IN. THK; 1 HOLE 0.992 IN. DIA; 4 BOLT HOLES 0.163 IN. DIA; 2 HOLES 1.750-12 UN INTERNAL THD IN
NSN4820-01-144-3664
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 8B391-000 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STAINLESS STEEL; 4.625 IN. LG; 4.000 IN. H; 2.250. IN. THK; 1 HOLE 0.992 IN. DIA; 4 BOLT HOLES 0.163 IN. DIA; 2 HOLES 1.750-12 UN INTERNAL THD IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTAINLESS STEEL; 4.625 IN. LG; 4.000 IN. H; 2.250. IN. THK; 1 HOLE 0.992 IN. DIA; 4 BOLT HOLES 0.163 IN. DIA; 2 HOLES 1.750-12 UN INTERNAL THD IN
SUBSTITUTES & CROSS-REFERENCES 2
8B390Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
8B390 ITEM 1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8B391-000?
8B391-000 is a SENSOR ASSEMBLY,VALVE.
What parts can replace 8B391-000?
There are 2 known substitutes for 8B391-000: 8B390, 8B390 ITEM 1. Substitute compatibility should be verified for your specific system.
What is the NSN for 8B391-000?
8B391-000 is cataloged in the U.S. Government catalog under NSN 4820-01-144-3664. 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.