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J3320 — VALVE,CHECK

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

J3320: VALVE,CHECK.

The VALVE,CHECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_length: 3.5 INCHES NOMINAL IN, style_designator: DOUBLE HEAD, surface_treatment: CHROMIUM OVERALL, large_end_head_angle: 15.0 DEGREES NOMINAL, small_end_head_angle: 75.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-464-0629, 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
J3320
NSN: 4820-01-464-0629
NIINs: 014640629, 014661137, 017241155
FSC: 4820 — Valves, Nonpowered
CAGE: 71041 — ALTRA INDUSTRIAL MOTION CORP. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_length3.5 INCHES NOMINAL IN
style_designatorDOUBLE HEAD
surface_treatmentCHROMIUM OVERALL
large_end_head_angle15.0 DEGREES NOMINAL
small_end_head_angle75.0 DEGREES NOMINAL
wrenching_surface_size0.3125 INCHES NOMINAL BOTH ENDS IN
wrenching_surface_shapeOVAL BOTH ENDS INTERNAL
large_end_head_thickness0.141 INCHES NOMINAL IN
small_end_head_thickness0.156 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyOPEN END WRENCH
NSN4820-01-464-0629
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: J3320 · 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
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 J3320?
J3320 is a VALVE,CHECK.
What is the NSN for J3320?
J3320 is cataloged in the U.S. Government catalog under NSN 4820-01-464-0629. 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.