The Valve,gate, cataloged under National Stock Number 4820-01-465-4687, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Twc the Valve Company, L.l.c.. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-465-4687 |
| Primary Part Number | W55 1.00 INCH |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Twc the Valve Company, L.l.c. |
| Status | ACTIVE |
| Stem Type | RISING |
| Connection Type | THREADED INTERNAL PIPE |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE DISK |
| Material Document and Classification | ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM B-584 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM B-875 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Valve Size | 1.000 INCHES IN |
| Pressure Class | ERR-060 |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY DISK |
| Material | SILICON AND COPPER ALLOY STEM |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| W55 1.00 INCH PRIMARY | Twc the Valve Company, L.l.c. (USA) |
| Reference | Meaning |
|---|---|
| W55 1.00IPS | 5/9 Secondary reference Twc the Valve Company, L.l.c. |
| W55 1.00IPS | 5/9 Secondary reference The Walworth Company |
NSN 4820-01-465-4687 is a Valve,gate, manufactured by Twc the Valve Company, L.l.c., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-465-4687 has 1 manufacturer part number on file: W55 1.00 INCH (Twc the Valve Company, L.l.c.).
Key specifications for W55 1.00 INCH: Stem Type: RISING; Connection Type: THREADED INTERNAL PIPE; Material Document and Classification: ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE DISK; Material Document and Classification: ASTM B-62 ASSN STD SINGLE MATERIAL RESPONSE BODY. 11 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.