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PartsTable / COMPONENT / 146-00425-1
146-00425-1 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416 OVERALL, flange_diameter: 1.063 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, under_flange_height: 0.484 INCHES NOMINAL IN, body_inside_diameter: 0.500 INCHES NOMINAL IN, body_outside_diameter: 0.875 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-989-1375, 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
146-00425-1
NSN: 4820-00-989-1375
FSC: 4820
CAGE: 26505 — GROVE VALVE OPERATIONS (USA)
SPECIFICATIONS
materialSTEEL COMP 416 OVERALL
flange_diameter1.063 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
under_flange_height0.484 INCHES NOMINAL IN
body_inside_diameter0.500 INCHES NOMINAL IN
body_outside_diameter0.875 INCHES NOMINAL IN
seating_surface_shapeANGULAR
material_document_and_classificationQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4820-00-989-1375
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 146-00425-1 · 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
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: AS DIFFERENTIATED BY MATERIAL IN ACCORDANCE WITH ACTIVITY HXQUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSAS DIFFERENTIATED BY MATERIAL IN ACCORDANCE WITH ACTIVITY HXQUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
23417Interchangeable
interchangeable cross-reference
interchangeable
S-34101Interchangeable
interchangeable cross-reference
interchangeable
146-00425-1Interchangeable
interchangeable cross-reference
interchangeable
M13962EPC18SPCLNInterchangeable
Same NIIN cross-reference
interchangeable
146-00425-1SPCLNInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 146-00425-1?
146-00425-1 is a SEAT,VALVE.
What parts can replace 146-00425-1?
There are 5 known substitutes for 146-00425-1: 23417, S-34101, 146-00425-1 and 2 more. Substitute compatibility should be verified for your specific system.
Is 146-00425-1 still available?
146-00425-1 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026