The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-520-8259, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Norgren C a Co. Government technical data includes 13 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 | 4820-01-520-8259 |
| Primary Part Number | PTH-240-M1MA |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Norgren C a Co |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Regulation Type | MANUAL SINGLE STAGE |
| First End Style Designator | GASKET SEAL |
| Temp Rating | 0.0 FAHRENHEIT MINIMUM AND 150.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | UNABLE TO DECODE |
| End Connection Quantity | 2 |
| Manual Control Method | KNOB |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | ZINC ALLOY UNS Z33520 OR ZINC ALLOY UNS Z35531 BODY |
| Media for Which Designed | AIR |
| Thread Size and Series/type Designator | 0.250 PTF-SAE SHORT FIRST END |
| Filter | 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 |
|---|---|
| PTH-240-M1MA PRIMARY | Norgren C a Co (USA) |
NSN 4820-01-520-8259 is a Valve,regulating,fluid Pressure, manufactured by Norgren C a Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-520-8259 has 1 manufacturer part number on file: PTH-240-M1MA (Norgren C a Co).
Key specifications for PTH-240-M1MA: First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Regulation Type: MANUAL SINGLE STAGE; First End Style Designator: GASKET SEAL. 13 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.