The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-185-4366, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Kidde Fire Fighting, Inc. Div National Foam. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-185-4366 |
| Primary Part Number | 3233-9177-0 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Kidde Fire Fighting, Inc. Div National Foam |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 6 |
| Flow Control Device | DISK |
| Second End Relationship with First End | IDENTICAL |
| Remote Actuation Method | DIAPHRAGM |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 6.625 INCHES NOMINAL IN |
| Regulation Type | AUTOMATIC SINGLE STAGE |
| First End Flange Thickness | 0.812 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 5.000 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| First End Bolt Hole Diameter | 0.562 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 3.938 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| End Connection Quantity | 2 |
| Valve Loading Method | SPRING |
| First End Connection Type | PLAIN FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Material | COPPER ALLOY BODY |
| Material | NICKEL ALLOY FLOW CONTROL DEVICE |
| Media for Which Designed | WATER |
| 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 |
|---|---|
| 00875040 | Kidde Fire Fighting, Inc. Div National Foam (USA) |
| 3233-9177-0 PRIMARY | Kidde Fire Fighting, Inc. Div National Foam (USA) |
| Reference | Meaning |
|---|---|
| BUL.79875020 | 5/9 Secondary reference Kidde Fire Fighting, Inc. Div National Foam |
NSN 4820-01-185-4366 is a Valve,regulating,fluid Pressure, manufactured by Kidde Fire Fighting, Inc. Div National Foam, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-185-4366 has 2 manufacturer part numbers on file: 00875040 (Kidde Fire Fighting, Inc. Div National Foam), 3233-9177-0 (Kidde Fire Fighting, Inc. Div National Foam).
Key specifications for 3233-9177-0: First End Bolt Hole Quantity: 6; Flow Control Device: DISK; Second End Relationship with First End: IDENTICAL; Remote Actuation Method: DIAPHRAGM. 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.