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83309-45 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

83309-45: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, stem_type: RISING, valve_size: 4.000 INCHES IN, bonnet_type: OUTSIDE SCREW-YOKE, taper_length: 5.120 INCHES NOMINAL IN, pressure_class: ERR-060. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-419-3648, 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
83309-45
NSN: 4820-01-419-3648
NIINs: 014193648, 014193649, 014201896, 014669766
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
stem_typeRISING
valve_size4.000 INCHES IN
bonnet_typeOUTSIDE SCREW-YOKE
taper_length5.120 INCHES NOMINAL IN
pressure_classERR-060
connection_typeFLANGE, ROUND W/HOLES
flange_diameter10.000 INCHES IN
pressure_rating300.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
special_featuresSTELLITE FACING
style_designatorSOLID WEDGE
features_providedBONNET PACKING
NSN4820-01-419-3648
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 83309-45 · 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
•
PRESSURE RATING: 300.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
TAPER MINOR DIAMETER: 1.000 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SOLID WEDGE
•
TAPER MAJOR DIAMETER: 2.303 INCHES NOMINAL IN
•
TAPER LENGTH: 5.120 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
PRESSURE RATING300.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
TAPER MINOR DIAMETER1.000 INCHES NOMINAL IN
STYLE DESIGNATORSOLID WEDGE
TAPER MAJOR DIAMETER2.303 INCHES NOMINAL IN
TAPER LENGTH5.120 INCHES NOMINAL IN
SPECIAL FEATURESSTELLITE FACING
END ITEM IDENTIFICATIONSUPPLY CLASS AOE
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 3
83309-45ITEM3 PN8533-505-037SReference document
Same NSN cross-reference
Reference document — Secondary reference
8533-505-037-GSReference document
Same NSN cross-reference
Reference document — Secondary reference
8533-505-037-SReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 83309-45?
83309-45 is a SEAT,VALVE.
What parts can replace 83309-45?
There are 3 known substitutes for 83309-45: 83309-45ITEM3 PN8533-505-037S, 8533-505-037-GS, 8533-505-037-S. Substitute compatibility should be verified for your specific system.
What is the NSN for 83309-45?
83309-45 is cataloged in the U.S. Government catalog under NSN 4820-01-419-3648. 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.