PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8625-2Disk,valve

William E Williams Valve Corp · NSN 4820-01-377-6971 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-377-6971 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-377-6971. Primary manufacturer part number: 8625-2.
Features
  • Disk,valve — FSC 4820
  • Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
  • Material: STEEL
  • 4 verified cross-references
  • Primary manufacturer: William E Williams Valve Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-01-377-6971, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is William E Williams Valve Corp. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-377-6971
Primary Part Number8625-2
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWilliam E Williams Valve Corp
StatusACTIVE
Pressure Rating150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
2930-00-302-67158625 INTERCHANGEABLE
Pump,water,engine C
Elgin Industries Inc. Dba
1075-00-383-8250 INTERCHANGEABLE
Retainer,bearing
5930-00-800-1641910883 INTERCHANGEABLE
Switch,rotary
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
4930-01-166-83038612-A INTERCHANGEABLE
Nozzle,eductor
The Gorman-Rupp Company Div Gorman-Rupp
5975-01-183-53688625 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
4130-01-229-4507 INTERCHANGEABLE
Heating Element,electrical,immer
5998-01-526-19208625 INTERCHANGEABLE
Holder,electrical Card
Keystone Electronics Corp
6640-01-565-52113955200 INTERCHANGEABLE
Adsorber,fume,organic,benchtop
Labconco Corp
5930-01-681-9626 INTERCHANGEABLE
Switch,pressure
6685-01-703-001886252 INTERCHANGEABLE
Sensor,ambient Temperature
Alcor Inc Dba Alcor Aviation
Cross-Reference Index
Part NumberManufacturer
8625-2 PRIMARY William E Williams Valve Corp (USA)
8625 William E Williams Valve Corp (USA)
FIG S151F-6LW ITEM 2 William E Williams Valve Corp (USA)
8625 ITEM 2 William E Williams Valve Corp (USA)
Related Parts
2930-00-302-6715INTERCHANGEABLE
PUMP,WATER,ENGINE C
8625
1075-00-383-8250INTERCHANGEABLE
RETAINER,BEARING
5930-00-800-1641INTERCHANGEABLE
SWITCH,ROTARY
910883
4930-01-166-8303INTERCHANGEABLE
NOZZLE,EDUCTOR
8612-A
5975-01-183-5368INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
8625
4130-01-229-4507INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,IMMER
5998-01-526-1920INTERCHANGEABLE
HOLDER,ELECTRICAL CARD
8625
6640-01-565-5211INTERCHANGEABLE
ADSORBER,FUME,ORGANIC,BENCHTOP
3955200
5930-01-681-9626INTERCHANGEABLE
SWITCH,PRESSURE
6685-01-703-0018INTERCHANGEABLE
SENSOR,AMBIENT TEMPERATURE
86252

Frequently Asked Questions

What is NSN 4820-01-377-6971?

NSN 4820-01-377-6971 is a Disk,valve, manufactured by William E Williams Valve Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-377-6971?

NSN 4820-01-377-6971 has 4 cross-referenced part numbers: 8625-2 (William E Williams Valve Corp), 8625 (William E Williams Valve Corp), FIG S151F-6LW ITEM 2 (William E Williams Valve Corp), 8625 ITEM 2 (William E Williams Valve Corp).

What NSN replaces 4820-01-377-6971?

There are 10 known substitutes for 4820-01-377-6971: 2930-00-302-6715, 1075-00-383-8250, 5930-00-800-1641 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8625-2?

Key specifications for 8625-2: Pressure Rating: 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Special Features: USED ON 8IN. STAINLESS STEEL SWING CHECK LEVER AND WEIGHT IN; Material: STEEL. 3 total characteristics are documented in the Federal Logistics Information System.

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