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IS386 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

IS386: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_height: 0.334 INCHES NOMINAL IN, style_designator: PLAIN, seat_angle_in_deg: 45.000 NOMINAL, body_inside_diameter: 1.250 INCHES NOMINAL IN, body_outside_diameter: 1.503 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-028-4402, 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
IS386
NSN: 4820-01-028-4402
FSC: 4820 — Valves, Nonpowered
CAGE: 31033 — TRW INC TRW INTL TRADE GOVERNMENT SALES DEPT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_height0.334 INCHES NOMINAL IN
style_designatorPLAIN
seat_angle_in_deg45.000 NOMINAL
body_inside_diameter1.250 INCHES NOMINAL IN
body_outside_diameter1.503 INCHES NOMINAL IN
seating_surface_shapeANGULAR
NSN4820-01-028-4402
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: IS386 · 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
•
BODY OUTSIDE DIAMETER: 1.503 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
•
SEATING SURFACE SHAPE: ANGULAR
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.334 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.503 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER1.250 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SEAT ANGLE IN DEG45.000 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 1
IPD1S2894Reference 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 IS386?
IS386 is a SEAT,VALVE.
What parts can replace IS386?
There is 1 known substitute for IS386: IPD1S2894. Substitute compatibility should be verified for your specific system.
What is the NSN for IS386?
IS386 is cataloged in the U.S. Government catalog under NSN 4820-01-028-4402. 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.