PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S15F-3 2 1/2 IN-MILValve,gate

William E Williams Valve Corp · NSN 4820-01-270-4250 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-270-4250 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-270-4250. Primary manufacturer part number: S15F-3 2 1/2 IN-MIL.
Features
  • Valve,gate — FSC 4820
  • Flange Diameter: 7.000 INCHES IN
  • Bolt Hole Quantity: 4
  • Material: STEEL CORROSION RESISTING SEAT
  • Material: STEEL CORROSION RESISTING DISK
  • Material: STEEL CORROSION RESISTING STEM
  • Stem Type: NONRISING
  • Material Document and Classification: ASTM A216 GR.WCB ASSN STD SINGLE MATERIAL RESPONSE BODY
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Seat construction
General Description

The Valve,gate, cataloged under National Stock Number 4820-01-270-4250, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-270-4250
Primary Part NumberS15F-3 2 1/2 IN-MIL
Item NameValve,gate
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWilliam E Williams Valve Corp
StatusACTIVE
Flange Diameter7.000 INCHES IN
Bolt Hole Quantity4
MaterialSTEEL CORROSION RESISTING SEAT
MaterialSTEEL CORROSION RESISTING DISK
MaterialSTEEL CORROSION RESISTING STEM
Stem TypeNONRISING
Material Document and ClassificationASTM A216 GR.WCB ASSN STD SINGLE MATERIAL RESPONSE BODY
Material Document and ClassificationASTM A182 GR. F6 ASSN STD SINGLE MATERIAL RESPONSE DISK
Bonnet Attachment MethodBOLTED
Material Document and ClassificationASTM A182 GR. F6 ASSN STD SINGLE MATERIAL RESPONSE SEAT
MaterialSTEEL UNS J03002 BODY
Valve Operation MethodMANUAL
Valve Size2.500 INCHES IN
Flange Face DesignRAISED
Face to Face Distance7.500 INCHES IN
Inlet Relationship with OutletIDENTICAL
Material Document and ClassificationASTM A182 GR. F6 ASSN STD SINGLE MATERIAL RESPONSE STEM
Connection TypeFLANGE, ROUND W/HOLES
Bonnet TypeOUTSIDE SCREW-YOKE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5950-00-335-62588619 INTERCHANGEABLE
Reactor
A M I/ Coast Magnetics Inc. Dba Coast Magnetics
3110-00-554-58265204K INTERCHANGEABLE
Bearing,ball,annular
Timken Co Div the Timken Company
5935-00-775-264410023755-101 INTERCHANGEABLE
Connector,receptacle,electrical
Elbitamerica, Inc.
7050-01-023-66708619 INTERCHANGEABLE
Converter,digital to Analog
Analog Devices, Inc. Div Corporate Headquarters
5120-01-122-1201 INTERCHANGEABLE
Contact Positioner,terminal Crim
4520-01-242-00168619 INTERCHANGEABLE
Heating Element,electrical,nonim
G.s. Blodgett, Llc Div Blodgett
5120-01-335-860686-19 INTERCHANGEABLE
Contact Positioner,terminal Crim
Daniels Manufacturing Corporation
Cross-Reference Index
Part NumberManufacturer
8619 S15F-3 2 1/2IN. William E Williams Valve Corp (USA)
S15F-3 2 1/2 IN-MIL PRIMARY William E Williams Valve Corp (USA)
8619 William E Williams Valve Corp (USA)
S15F-3 2 1/2IN. AND 8619 William E Williams Valve Corp (USA)
S15F-3 2 1/2 IN William E Williams Valve Corp (USA)
Related Parts
5950-00-335-6258INTERCHANGEABLE
REACTOR
8619
3110-00-554-5826INTERCHANGEABLE
BEARING,BALL,ANNULAR
5204K
5935-00-775-2644INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
10023755-101
7050-01-023-6670INTERCHANGEABLE
CONVERTER,DIGITAL TO ANALOG
8619
5120-01-122-1201INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
4520-01-242-0016INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
8619
5120-01-335-8606INTERCHANGEABLE
CONTACT POSITIONER,TERMINAL CRIM
86-19

Frequently Asked Questions

What is NSN 4820-01-270-4250?

NSN 4820-01-270-4250 is a Valve,gate, manufactured by William E Williams Valve Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-270-4250?

NSN 4820-01-270-4250 has 5 cross-referenced part numbers: 8619 S15F-3 2 1/2IN. (William E Williams Valve Corp), S15F-3 2 1/2 IN-MIL (William E Williams Valve Corp), 8619 (William E Williams Valve Corp), S15F-3 2 1/2IN. AND 8619 (William E Williams Valve Corp), S15F-3 2 1/2 IN (William E Williams Valve Corp).

What NSN replaces 4820-01-270-4250?

There are 7 known substitutes for 4820-01-270-4250: 5950-00-335-6258, 3110-00-554-5826, 5935-00-775-2644 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S15F-3 2 1/2 IN-MIL?

Key specifications for S15F-3 2 1/2 IN-MIL: Flange Diameter: 7.000 INCHES IN; Bolt Hole Quantity: 4; Material: STEEL CORROSION RESISTING SEAT; Material: STEEL CORROSION RESISTING DISK. 19 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com