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73423A PIECE 3 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

73423A PIECE 3: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_height: 0.810 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN, special_features: WITH STELLITE NO. 6, body_inside_diameter: 2.750 INCHES MINIMUM AND 2.755 INCHES MAXIMUM IN, body_outside_diameter: 3.562 INCHES NOMINAL IN, seating_surface_shape: ANGULAR.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-107-2354, 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
73423A PIECE 3
NSN: 4820-01-107-2354
FSC: 4820 — Valves, Nonpowered
CAGE: 57574 — VELAN VALVE CORP. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_height0.810 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN
special_featuresWITH STELLITE NO. 6
body_inside_diameter2.750 INCHES MINIMUM AND 2.755 INCHES MAXIMUM IN
body_outside_diameter3.562 INCHES NOMINAL IN
seating_surface_shapeANGULAR
NSN4820-01-107-2354
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 73423A PIECE 3 · 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: 3.562 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 2.750 INCHES MINIMUM AND 2.755 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
SEATING SURFACE SHAPE: ANGULAR
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.810 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER3.562 INCHES NOMINAL IN
BODY INSIDE DIAMETER2.750 INCHES MINIMUM AND 2.755 INCHES MAXIMUM IN
SPECIAL FEATURESWITH STELLITE NO. 6
MATERIALSTEEL OVERALL
SEATING SURFACE SHAPEANGULAR
SUBSTITUTES & CROSS-REFERENCES 4
73423A PIECE3 3Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
7542-1-31Reference document
Same NSN cross-reference
Reference document — Secondary reference
73423-30Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
73423A PIECE 3 3INSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 73423A PIECE 3?
73423A PIECE 3 is a SEAT,VALVE.
What parts can replace 73423A PIECE 3?
There are 4 known substitutes for 73423A PIECE 3: 73423A PIECE3 3, 7542-1-31, 73423-30 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 73423A PIECE 3?
73423A PIECE 3 is cataloged in the U.S. Government catalog under NSN 4820-01-107-2354. 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.