The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-439-8787, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Dh Instruments Inc.. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-439-8787 |
| Primary Part Number | 401320 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Dh Instruments Inc. |
| Status | ACTIVE |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| End Connection Quantity | 2 |
| Manual Control Method | LEVER |
| Valve Loading Method | BELLOWS |
| First End Connection Type | THREADED INTERNAL TUBE |
| First End Outside Diameter Tube Accommodated | 0.375 INCHES NOMINAL IN |
| Media for Which Designed | GAS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 401320 PRIMARY | Dh Instruments Inc. (USA) |
| Reference | Meaning |
|---|---|
| SR4-080-F0014-S32-25 | 5/9 Secondary reference Dh Instruments Inc. |
NSN 4820-01-439-8787 is a Valve,regulating,fluid Pressure, manufactured by Dh Instruments Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-439-8787 has 1 manufacturer part number on file: 401320 (Dh Instruments Inc.).
Key specifications for 401320: Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU; End Connection Quantity: 2; Manual Control Method: LEVER. 8 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.
NSN 4820-01-439-8787 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.