The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-322-8154, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-322-8154 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 4 |
| Flow Control Device | PISTON, SPRING LOADED |
| Second End Relationship with First End | IDENTICAL |
| Remote Actuation Method | DIAPHRAGM |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 7.750 INCHES NOMINAL IN |
| First End Style Designator | RAISED |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| Mounting Facility | FLANGE |
| First End Connection Type | RAISED FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Material | STEEL CORROSION RESISTING FLOW CONTROL DEVICE |
| Material | STEEL CORROSION RESISTING SEAT |
| Media for Which Designed | STEAM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 40661-5 | 3/9 Design control — primary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
NSN 4820-01-322-8154 is a Valve,regulating,fluid Pressure, classified under FSC 4820, Valves, Nonpowered. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-323-6224, 4730-01-649-4348. Verify interchangeability with system specifications before substitution.
Key specifications for 4820-01-322-8154: First End Bolt Hole Quantity: 4; Flow Control Device: PISTON, SPRING LOADED; Second End Relationship with First End: IDENTICAL; Remote Actuation Method: DIAPHRAGM. 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.