The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-309-4113, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lexair Inc. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-309-4113 |
| Primary Part Number | 321320-26 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lexair Inc |
| Status | ACTIVE |
| Flow Control Device | DISK |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 4.380 INCHES NOMINAL IN |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Style Designator | PLAIN |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | COPPER ALLOY BODY |
| Media for Which Designed | GAS |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 1/4-18 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 |
|---|---|
| 321320-26 PRIMARY | Lexair Inc (USA) |
| Reference | Meaning |
|---|---|
| 23036187 | 7/1 Vendor item drawing reference Rolls-Royce Corporation |
NSN 4820-01-309-4113 is a Valve,regulating,fluid Pressure, manufactured by Lexair Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-309-4113 has 1 manufacturer part number on file: 321320-26 (Lexair Inc).
Key specifications for 321320-26: Flow Control Device: DISK; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 15 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.