The Parts Kit,pressure Regulating VA, cataloged under National Stock Number 4820-01-078-8137, 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. Government technical data includes 2 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-078-8137 |
| Primary Part Number | 4873-2/7 |
| Item Name | Parts Kit,pressure Regulating VA |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Howell Laboratories Inc Dba Howell Laboratories Inc |
| Status | ACTIVE |
| Component Quantity | 6 |
| Nonsupply Items and Quantities | 07282 EB12191 DIAPHRAGM ASSEMBLY 1; 07282 EB12216-1 DIAPHRAGM ASSEMBLY 1; 07282 EB12222-1 SPACER RING ASSEMBLY 1; 07282 EB06053 GASKET 1; 07282 EB06070 SEAT RING 1; 07282 EB01820 INNER VALVE ASSEMBLY 1 |
| 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 |
|---|---|
| 4873-2/7 PRIMARY | Howell Laboratories Inc Dba Howell Laboratories Inc (USA) |
| EA-12922-2 PRIMARY | Fairchild Industrial Products Company (USA) |
| Reference | Meaning |
|---|---|
| 9022-38 | 5/9 Secondary reference Air Dry Co of America, Llc |
| 4873 | D/9 Drawing number reference only Howell Laboratories Inc Dba Howell Laboratories Inc |
| EA-12922 | 5/9 Secondary reference Fairchild Industrial Products Company |
| 4873C-2/7 | 5/9 Secondary reference Howell Laboratories Inc Dba Howell Laboratories Inc |
| 9022-38 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-01-078-8137 is a Parts Kit,pressure Regulating VA, manufactured by Howell Laboratories Inc Dba Howell Laboratories Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-078-8137 has 2 manufacturer part numbers on file: 4873-2/7 (Howell Laboratories Inc Dba Howell Laboratories Inc), EA-12922-2 (Fairchild Industrial Products Company).
4 possible matches (shared part number, not a government interchangeability claim): 2530-01-255-9135, 5940-01-275-5178, 5905-01-279-5171. Verify interchangeability with system specifications before substitution.
Key specifications for 4873-2/7: Component Quantity: 6; Nonsupply Items and Quantities: 07282 EB12191 DIAPHRAGM ASSEMBLY 1; 07282 EB12216-1 DIAPHRAGM ASSEMBLY 1; 07282 EB12222-1 SPACER RING ASSEMBLY 1; 07282 EB06053 GASKET 1; 07282 EB06070 SEAT RING 1; 07282 EB01820 INNER VALVE ASSEMBLY 1. 2 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.