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83309-42 PC4 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

83309-42 PC4: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_height: 0.750 INCHES NOMINAL IN, special_features: STELLITE NO. 6 FACED, style_designator: PLAIN, seat_angle_in_deg: 30.000 NOMINAL, body_inside_diameter: 4.000 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-234-8453, 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
83309-42 PC4
NSN: 4820-01-234-8453
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_height0.750 INCHES NOMINAL IN
special_featuresSTELLITE NO. 6 FACED
style_designatorPLAIN
seat_angle_in_deg30.000 NOMINAL
body_inside_diameter4.000 INCHES NOMINAL IN
body_outside_diameter4.893 INCHES NOMINAL IN
seating_surface_shapeANGULAR
end_item_identificationVELAN 3.500 IN. GATE VALVE IN
NSN4820-01-234-8453
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 83309-42 PC4 · 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: 4.893 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLAIN
•
BODY INSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
SEAT ANGLE IN DEG: 30.000 NOMINAL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.750 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER4.893 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
BODY INSIDE DIAMETER4.000 INCHES NOMINAL IN
SPECIAL FEATURESSTELLITE NO. 6 FACED
END ITEM IDENTIFICATIONVELAN 3.500 IN. GATE VALVE IN
MATERIALSTEEL OVERALL
SEAT ANGLE IN DEG30.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
SUBSTITUTES & CROSS-REFERENCES 4
8543-009-209Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
83309-42Reference document
Same NSN cross-reference
Reference document — Secondary reference
8542-009-062Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
9999-002Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 83309-42 PC4?
83309-42 PC4 is a SEAT,VALVE.
What parts can replace 83309-42 PC4?
There are 4 known substitutes for 83309-42 PC4: 8543-009-209, 83309-42, 8542-009-062 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 83309-42 PC4?
83309-42 PC4 is cataloged in the U.S. Government catalog under NSN 4820-01-234-8453. 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.