The Valve,check, cataloged under National Stock Number 4820-01-524-8963, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is L3harris Technologies, Inc.. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-524-8963 |
| Primary Part Number | 526-12759 |
| Item Name | Valve,check |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | L3harris Technologies, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| 193970 | Bosch Rexroth Canada Corp (CAN) |
| 526-12759 PRIMARY | L3harris Technologies, Inc. (USA) |
| 526-12759 | Rolls-Royce Canada Limited Div Rolls-Royce Canada Limited (CAN) |
| Reference | Meaning |
|---|---|
| FB1-AOHP-154N-25 | 5/9 Secondary reference Bosch Rexroth Corporation Div Industrial Hydraulics |
NSN 4820-01-524-8963 is a Valve,check, manufactured by L3harris Technologies, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-524-8963 has 3 manufacturer part numbers on file: 193970 (Bosch Rexroth Canada Corp), 526-12759 (L3harris Technologies, Inc.), 526-12759 (Rolls-Royce Canada Limited Div Rolls-Royce Canada Limited).
Key specifications for 526-12759: Part Name Assigned by Controlling Agency: VALVE, VARIABLE CHECK, INLINE MOUNTED, SAE NO 8 PORT SIZE, BRCC NO 193970; End Item Identification: ALOFTS SONAR SYSTEM MODEL 980 (V1). 0 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.