The Valve,check, cataloged under National Stock Number 4820-01-585-2176, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is T and S Brass and Bronze Works Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-585-2176 |
| Primary Part Number | B-CVH1-2 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | T and S Brass and Bronze Works Inc |
| Status | ACTIVE |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES ALL ENDS IN |
| Disk Loading Method | SPRING |
| Media for Which Designed | WATER, FRESH SINGLE RESPONSE |
| Material | COPPER ALLOY BODY |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| B-2339-LR ITEM NO. 2 | T and S Brass and Bronze Works Inc (USA) |
| B-CVH1-2 PRIMARY | T and S Brass and Bronze Works Inc (USA) |
NSN 4820-01-585-2176 is a Valve,check, manufactured by T and S Brass and Bronze Works Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-585-2176 has 2 manufacturer part numbers on file: B-2339-LR ITEM NO. 2 (T and S Brass and Bronze Works Inc), B-CVH1-2 (T and S Brass and Bronze Works Inc).
Key specifications for B-CVH1-2: Connection Type: THREADED INTERNAL TUBE ALL ENDS; Style Designator: STRAIGHT THRU; Nominal Outside Diameter Tube Accommodated: 0.500 INCHES ALL ENDS IN; Disk Loading Method: SPRING. 7 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.