The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-340-0343, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kaye and Macdonald Inc. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-340-0343 |
| Primary Part Number | 05D1BR300S-QBYH00 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kaye and Macdonald Inc |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| Valve Loading Method | SPRING |
| Material | COPPER ALLOY BODY |
| Media for Which Designed | WATER |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 1-1/4-11-1/2 NPT FIRST END |
| Filter | NOT INCLUDED |
| 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 |
|---|---|
| 05D1BR300S-QBYH00 PRIMARY | Kaye and Macdonald Inc (USA) |
NSN 4820-01-340-0343 is a Valve,regulating,fluid Pressure, manufactured by Kaye and Macdonald Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-340-0343 has 1 manufacturer part number on file: 05D1BR300S-QBYH00 (Kaye and Macdonald Inc).
Key specifications for 05D1BR300S-QBYH00: First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Regulation Type: AUTOMATIC SINGLE STAGE; Valve Loading Method: SPRING. 9 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.