The Valve,check, cataloged under National Stock Number 4820-01-436-1540, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Star Sprinkler Corp. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-436-1540 |
| Primary Part Number | 1133-1 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Star Sprinkler Corp |
| Status | ACTIVE |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 1133-1 PRIMARY | Star Sprinkler Corp (USA) |
NSN 4820-01-436-1540 is a Valve,check, manufactured by Star Sprinkler Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-436-1540 has 1 manufacturer part number on file: 1133-1 (Star Sprinkler Corp).
Key specifications for 1133-1: Special Features: WOOD BALL; VELOCITY DRIP CHECK VALVE CONSISTS OF- BODY-P/N DVD-1, NOZZLE-P/N DVD-2, BALL-P/N DVD-3, BALL SEAT-P/N DVD-4, MANUAL DRAIN PIN-P/N DVD-5, MANUAL DRAIN PIN CUP-P/N DVD-5A, MANUAL DRAIN PIN SPRING-P/N DVD-5B, MANUAL DRAIN PIN RETAINER-P/N DVD-5C A; Material: COPPER ALLOY OVERALL. 1 specification is 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.