The Valve,check, cataloged under National Stock Number 4820-01-407-0948, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Apco/valve & Primer Corp. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-407-0948 |
| Primary Part Number | CSC,2,300,W1W2,X,X-M* |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Apco/valve & Primer Corp |
| Status | ACTIVE |
| Flow Control Device | DISK |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Style Designator | STRAIGHT THRU |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | COPPER ALLOY SEAT |
| 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 |
|---|---|
| CSC,2,300,W1W2,X,X-M* PRIMARY | Apco/valve & Primer Corp (USA) |
| Reference | Meaning |
|---|---|
| 302.980 | 5/9 Secondary reference Apco/valve & Primer Corp |
| 9648633-CSC | 5/9 Secondary reference Apco/valve & Primer Corp |
| MOD 302980 | 5/9 Secondary reference Apco/valve & Primer Corp |
NSN 4820-01-407-0948 is a Valve,check, manufactured by Apco/valve & Primer Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-407-0948 has 1 manufacturer part number on file: CSC,2,300,W1W2,X,X-M* (Apco/valve & Primer Corp).
Key specifications for CSC,2,300,W1W2,X,X-M*: Flow Control Device: DISK; Mounting Position: HORIZONTAL OR VERTICAL; Style Designator: STRAIGHT THRU; Special Features: VALVE SZ 2.000 IN.; MODEL 302 SPECIAL WITH SHAFT EXTENDING 0.125 IN. BEYOND STEM BUSHING ON ONE END AND 0.625 IN. ON OTHER END IN. 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.