The Parts Kit,pressure Regulating VA, cataloged under National Stock Number 4820-00-421-7044, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Spirax Sarco Inc Dba Spirax Sarco. 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. 2 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 | 4820-00-421-7044 |
| Primary Part Number | 57157 |
| Item Name | Parts Kit,pressure Regulating VA |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Spirax Sarco Inc Dba Spirax Sarco |
| Status | ACTIVE |
| Component Quantity | 7 |
| Nonsupply Items and Quantities | CAP 1,SEAT 1,BODY/DIAPHRAGM CASE 1,PILOT GASKETS 4 |
| 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 |
|---|---|
| 57157 PRIMARY | Spirax Sarco Inc Dba Spirax Sarco (USA) |
| P9-650-1K1-1/4 PRIMARY | Spirax Sarco Inc Dba Spirax Sarco (USA) |
NSN 4820-00-421-7044 is a Parts Kit,pressure Regulating VA, manufactured by Spirax Sarco Inc Dba Spirax Sarco, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-421-7044 has 2 manufacturer part numbers on file: 57157 (Spirax Sarco Inc Dba Spirax Sarco), P9-650-1K1-1/4 (Spirax Sarco Inc Dba Spirax Sarco).
2 possible matches (shared part number, not a government interchangeability claim): 2835-00-793-8007, 6530-01-100-4955. Verify interchangeability with system specifications before substitution.
Key specifications for 57157: Component Quantity: 7; Nonsupply Items and Quantities: CAP 1,SEAT 1,BODY/DIAPHRAGM CASE 1,PILOT GASKETS 4. 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.