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383V305 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

383V305: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, overall_height: 2.307 INCHES MINIMUM AND 2.317 INCHES MAXIMUM IN, flange_diameter: 1.360 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN, hardness_rating: 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL, seat_angle_in_deg: 0.750 NOMINAL, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-005-7397, 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
383V305
NSN: 4820-00-005-7397
FSC: 4820 — Valves, Nonpowered
CAGE: 72914 — GRIMES AEROSPACE COMPANY (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
overall_height2.307 INCHES MINIMUM AND 2.317 INCHES MAXIMUM IN
flange_diameter1.360 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
hardness_rating25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
seat_angle_in_deg0.750 NOMINAL
surface_treatmentPASSIVATE OVERALL
body_inside_diameter0.875 INCHES NOMINAL IN
body_outside_diameter1.184 INCHES MINIMUM AND 1.870 INCHES MAXIMUM IN
seating_surface_shapeANGULAR
NSN4820-00-005-7397
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 383V305 · 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
•
FLANGE DIAMETER: 1.360 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 1.184 INCHES MINIMUM AND 1.870 INCHES MAXIMUM IN
•
HARDNESS RATING: 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
•
BODY INSIDE DIAMETER: 0.875 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
SEAT ANGLE IN DEG: 0.750 NOMINAL
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER1.360 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN
OVERALL HEIGHT2.307 INCHES MINIMUM AND 2.317 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER1.184 INCHES MINIMUM AND 1.870 INCHES MAXIMUM IN
HARDNESS RATING25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
BODY INSIDE DIAMETER0.875 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
SEAT ANGLE IN DEG0.750 NOMINAL
SEATING SURFACE SHAPEANGULAR
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
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 383V305?
383V305 is a SEAT,VALVE.
What is the NSN for 383V305?
383V305 is cataloged in the U.S. Government catalog under NSN 4820-00-005-7397. 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.