The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-389-0481, 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 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-389-0481 |
| Primary Part Number | B12-497-M2LA |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Norgren C a Co |
| Status | ACTIVE |
| Flow Control Device | DISK, BEVEL SEAT, TOP GUIDED |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Regulation Type | MANUAL SINGLE STAGE |
| First End Style Designator | OPTIONAL END |
| Temp Rating | 0.0 FAHRENHEIT MINIMUM AND 175.0 FAHRENHEIT MAXIMUM DEGF |
| End Connection Quantity | 2 |
| Outlet Pressure Range | 5.0 TO 125.0 CAMERA MOUNT |
| Manual Control Method | KNOB |
| Valve Loading Method | SPRING |
| Mounting Facility | BRACKET |
| First End Connection Type | THREADED INTERNAL PIPE |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | ZINC SEAT |
| Material | RUBBER CHLOROPRENE CLASS CR AND RUBBER BUTADIENE-STYRENE CLASS SBR PACKING |
| Media for Which Designed | AIR |
| Maximum Inlet Pressure Rating | ERR-060 |
| Furnished Items | BONNET AND OUTLET PRESSURE GAGE AND INTERNAL BYPASS VALVE |
| Thread Size and Series/type Designator | 1/2-14 NPTF 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 |
|---|---|
| B12-497-M2LA PRIMARY | Norgren C a Co (USA) |
| Reference | Meaning |
|---|---|
| B12 | 5/1 Secondary reference Norgren C a Co |
NSN 4820-01-389-0481 is a Valve,regulating,fluid Pressure, manufactured by Norgren C a Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-389-0481 has 1 manufacturer part number on file: B12-497-M2LA (Norgren C a Co).
Key specifications for B12-497-M2LA: Flow Control Device: DISK, BEVEL SEAT, TOP GUIDED; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 21 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.