The Valve,gate, cataloged under National Stock Number 4820-01-504-7888, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is William E Williams Valve Corp. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-504-7888 |
| Primary Part Number | WV121000-01-2.50 IN |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | William E Williams Valve Corp |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Flange Face Design | RAISED |
| Connection Type | FLANGE, ROUND W/HOLES |
| Material Document and Classification | ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM A-351 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A-351 ASSN STD SINGLE MATERIAL RESPONSE DISK |
| Material Document and Classification | ASTM A-351 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Valve Size | 2.500 INCHES IN |
| Face to Face Distance | 7.500 INCHES IN |
| Material | STEEL COMP 304 SEAT |
| Material | STEEL COMP 410 STEM |
| Material | STEEL COMP 304L BODY |
| Material | STEEL COMP 304L DISK |
| Valve Operation Method | ELECTRIC MOTOR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| WV121000-01-2.50 IN PRIMARY | William E Williams Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| WV121000-01 | D/9 Drawing number reference only William E Williams Valve Corp |
NSN 4820-01-504-7888 is a Valve,gate, manufactured by William E Williams Valve Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-504-7888 has 1 manufacturer part number on file: WV121000-01-2.50 IN (William E Williams Valve Corp).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-504-7890. Verify interchangeability with system specifications before substitution.
Key specifications for WV121000-01-2.50 IN: Inlet Relationship with Outlet: IDENTICAL; Flange Face Design: RAISED; Connection Type: FLANGE, ROUND W/HOLES; Material Document and Classification: ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE STEM. 14 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.