The Valve,check, cataloged under National Stock Number 4820-01-237-8309, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Avitest Llc. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-237-8309 |
| Primary Part Number | 2869 1INCH |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Avitest Llc |
| Status | ACTIVE |
| Mounting Position | HORIZONTAL OR VERTICAL |
| Operating Pressure | 4600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| 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 |
|---|---|
| 2869 1INCH PRIMARY | Avitest Llc (USA) |
| B-M 1200 PIECE 23-24 PRIMARY | Avitest Llc (USA) |
| Reference | Meaning |
|---|---|
| B-M 1200 PIECE 23-24 | 5/9 Secondary reference Aviation Technology, Inc. |
| 2869 1INCH | 3/9 Design control — primary reference Aviation Technology, Inc. |
| S20A1.0/5 | C/1 Advisory reference — outside the item-of-supply concept Bosch Rexroth Corporation Div Industrial Hydraulics |
NSN 4820-01-237-8309 is a Valve,check, manufactured by Avitest Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-237-8309 has 2 manufacturer part numbers on file: 2869 1INCH (Avitest Llc), B-M 1200 PIECE 23-24 (Avitest Llc).
Key specifications for 2869 1INCH: Mounting Position: HORIZONTAL OR VERTICAL; Operating Pressure: 4600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Valve Operation Method: AUTOMATIC. 3 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.