NSN 4820-01-256-3581 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-256-3581. Manufacturer of record part number: S807-25 1.50IN 600PSI SW.
Nominal Pipe Size Accommodated: 1.500 INCHES ALL ENDS IN
Operating Pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Material: STEEL BODY
1 manufacturer part number on file
Manufacturer of record: Sfc Valve Corporation
Identification
NSN: 4820-01-256-3581
NIIN: 012563581
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: S807-25 1.50IN 600PSI SW
Manufacturer: Sfc Valve Corporation
General Description
The Valve,stop-Check, cataloged under National Stock Number 4820-01-256-3581, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Sfc Valve Corporation. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-256-3581
Primary Part Number
S807-25 1.50IN 600PSI SW
Item Name
Valve,stop-Check
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Sfc Valve Corporation
Status
ACTIVE
Nominal Pipe Size Accommodated
1.500 INCHES ALL ENDS IN
Operating Pressure
600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-01-256-3581?
NSN 4820-01-256-3581 is a Valve,stop-Check, manufactured by Sfc Valve Corporation, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-256-3581?
NSN 4820-01-256-3581 has 1 manufacturer part number on file: S807-25 1.50IN 600PSI SW (Sfc Valve Corporation).
What are the specifications of S807-25 1.50IN 600PSI SW?
Key specifications for S807-25 1.50IN 600PSI SW: Nominal Pipe Size Accommodated: 1.500 INCHES ALL ENDS IN; Operating Pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Material: STEEL BODY. 3 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-256-3581 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.