The Valve,check, cataloged under National Stock Number 4820-01-657-6689, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Crane Co Div Valve Div. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-657-6689 |
| Primary Part Number | 1342 2IN |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Furnished Items and Quantity | 1 CAP |
| Nominal Pipe Size Accommodated | 2.00 INCHES ALL ENDS IN |
| Connection Style | SOCKET (PIPE) ALL ENDS |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Material Document and Classification | ASTM B61 C92200 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Material Document and Classification | ASTM B62 C83600 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Valve Size | 2.00 INCHES IN |
| Face to Face Distance | 6.86 INCHES IN |
| Material | COPPER ALLOY 836 BODY |
| Material | COPPER ALLOY 922 FLOW CONTROL DEVICE |
| 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 |
|---|---|
| 1342 2IN PRIMARY | Crane Co Div Valve Div (USA) |
NSN 4820-01-657-6689 is a Valve,check, manufactured by Crane Co Div Valve Div, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-657-6689 has 1 manufacturer part number on file: 1342 2IN (Crane Co Div Valve Div).
Key specifications for 1342 2IN: Flow Control Device: DISK; Furnished Items and Quantity: 1 CAP; Nominal Pipe Size Accommodated: 2.00 INCHES ALL ENDS IN; Connection Style: SOCKET (PIPE) ALL ENDS. 13 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.