The Valve,regulating,system Pressure, cataloged under National Stock Number 4820-01-486-2727, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Drs Environmental Systems Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-486-2727 |
| Primary Part Number | 536-313-029 |
| Item Name | Valve,regulating,system Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Drs Environmental Systems Inc |
| Status | ACTIVE |
| Media for Which Designed | GAS |
| 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 |
|---|---|
| 904010 | Parker-Hannifin Corp Div Sporlan Division (USA) |
| 536-313-029 PRIMARY | Drs Environmental Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 536-313-029 | 5/9 Secondary reference Engineered Environments Inc Dba E E I |
NSN 4820-01-486-2727 is a Valve,regulating,system Pressure, manufactured by Drs Environmental Systems Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-486-2727 has 2 manufacturer part numbers on file: 904010 (Parker-Hannifin Corp Div Sporlan Division), 536-313-029 (Drs Environmental Systems Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-499-4628, 6515-01-591-5008. Verify interchangeability with system specifications before substitution.
Key specifications for 536-313-029: Special Features: 7/8 INCH OUTSIDE DIAMETER INTERNAL THREADED END CONNECTIONS; NHA NSN 5895-01-479-9735 TERMINAL, SATELLITE COMMUNICATION IN; Part Name Assigned by Controlling Agency: HOT GAS BYPASS VALVE; Media for Which Designed: GAS. 1 specification is 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.