PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

146-00425-1Seat,valve

Grove Valve Operations · NSN 4820-00-989-1375 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-989-1375 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-989-1375. Primary manufacturer part number: 146-00425-1.
Features
  • Seat,valve — FSC 4820
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY MATERIAL IN ACCORDANCE WITH ACTIVITY HXQUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
  • 3 verified cross-references
  • Primary manufacturer: Grove Valve Operations
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-989-1375, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Grove Valve Operations. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-989-1375
Primary Part Number146-00425-1
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerGrove Valve Operations
StatusCANCELLED
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY MATERIAL IN ACCORDANCE WITH ACTIVITY HXQUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
4820-01-019-4706146-00425-1 INTERCHANGEABLE
Seat,valve
Grove Valve Operations
Cross-Reference Index
Part NumberManufacturer
146-00425-1 Grove Valve Operations (USA)
M13962EPC18SPCLN Grove Valve Operations (USA)
146-00425-1SPCLN Grove Valve Operations (USA)
Related Parts
4820-01-019-4706INTERCHANGEABLE
SEAT,VALVE
146-00425-1

Frequently Asked Questions

What is NSN 4820-00-989-1375?

NSN 4820-00-989-1375 is a Seat,valve, manufactured by Grove Valve Operations, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-989-1375?

NSN 4820-00-989-1375 has 3 cross-referenced part numbers: 146-00425-1 (Grove Valve Operations), M13962EPC18SPCLN (Grove Valve Operations), 146-00425-1SPCLN (Grove Valve Operations).

What NSN replaces 4820-00-989-1375?

There is 1 known substitute for 4820-00-989-1375: 4820-01-019-4706. Verify interchangeability with system specifications before substitution.

What are the specifications of 146-00425-1?

Key specifications for 146-00425-1: Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY MATERIAL IN ACCORDANCE WITH ACTIVITY HXQUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-989-1375 still in active supply?

NSN 4820-00-989-1375 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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