The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-692-1631, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Howell Laboratories Inc Dba Howell Laboratories Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Howell Laboratories Inc Dba Howell Laboratories Inc (CAGE 22501) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-692-1631 |
| Primary Part Number | 9152-G503 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories 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 |
|---|---|
| 9152-G503-1 | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| 9152-G503 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 9180-G514 ITEM NUMBER 11 | C/1 Advisory reference — outside the item-of-supply concept Howell Laboratories Inc Dba Howell Laboratories Inc |
| 9180-G514 | D/9 Drawing number reference only Howell Laboratories Inc Dba Howell Laboratories Inc |
NSN 4820-01-692-1631 is a Valve,regulating,fluid Pressure, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-692-1631 has 2 manufacturer part numbers on file: 9152-G503-1 (Howell Laboratories Inc Dba Howell Laboratories Inc), 9152-G503 (Howell Laboratories Inc Dba Howell Laboratories Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-692-1649. Verify interchangeability with system specifications before substitution.
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.