PartsTable
Technical Data Sheet
Download PDF

311428-1 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

311428-1: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include end_item_identification: 5865010489989,RECEIVER,COUNTERMEASURES,FSCM 80058,JETDS AN/ALR-62V V, general_characteristics_item_description: 0.640 IN. LG,0.500 IN.

W,0.250 IN. H IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-859-2397, 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
311428-1
NSN: 4820-00-859-2397
NIINs: 008592397, 010564849, 012750410
FSC: 4820 — Valves, Nonpowered
CAGE: 59364 — HONEYWELL INTERNATIONAL INC. DBA HONEYWELL INTERNATIONAL DIV AEROSPACE - TEMPE (WEST WARNER ROAD) (USA)
SPECIFICATIONS
end_item_identification5865010489989,RECEIVER,COUNTERMEASURES,FSCM 80058,JETDS AN/ALR-62V V
general_characteristics_item_description0.640 IN. LG,0.500 IN. W,0.250 IN. H IN
NSN4820-00-859-2397
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 311428-1 · 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
•
FSC APPLICATION DATA: POWER UNIT,GAS TURBINE ENGINE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-S-7720 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
BODY OUTSIDE DIAMETER: 0.374 INCHES NOMINAL IN
•
BODY STEPPED INSIDE DIAMETER: 0.156 INCHES NOMINAL FIRST STEP IN
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 303S OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.060 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
FSC APPLICATION DATAPOWER UNIT,GAS TURBINE ENGINE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-7720 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
BODY OUTSIDE DIAMETER0.374 INCHES NOMINAL IN
BODY STEPPED INSIDE DIAMETER0.156 INCHES NOMINAL FIRST STEP IN
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303S OVERALL
SEAT ANGLE IN DEG59.000 MINIMUM AND 61.000 MAXIMUM
SEATING SURFACE SHAPEANGULAR
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
Ready to buy 311428-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 311428-1?
311428-1 is a SEAT,VALVE.
What is the NSN for 311428-1?
311428-1 is cataloged in the U.S. Government catalog under NSN 4820-00-859-2397. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 311428-1

✓ 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.