The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-00-461-3745, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Watts Automatic Control Valve Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-461-3745 |
| Primary Part Number | 3030-07 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Watts Automatic Control Valve Inc |
| Status | ACTIVE |
| Flow Control Device | DIAPHRAGM AND DISK |
| Renewable Seat Ring Type | PRESSED-IN |
| First End Thread Direction | RIGHT-HAND |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| 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 | STEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING STEM |
| Material | FABRIC, NYLON AND RUBBER AND COPPER ALLOY AND RUBBER SYNTHETIC FLOW CONTROL DEVICE |
| Media for Which Designed | HYDROCARBON FUELS AND OILS |
| Maximum Inlet Pressure Rating | ERR-060 |
| Thread Size and Series/type Designator | 3/4-14 NPT 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 |
|---|---|
| 3030-07 PRIMARY | Watts Automatic Control Valve Inc (USA) |
| Reference | Meaning |
|---|---|
| 508146 | D/9 Drawing number reference only U.S. Government activity |
| 3030-07 | 5/9 Secondary reference Muesco Inc Dba Muesco Mallay Inc |
| 508146-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-00-461-3745 is a Valve,regulating,fluid Pressure, manufactured by Watts Automatic Control Valve Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-461-3745 has 1 manufacturer part number on file: 3030-07 (Watts Automatic Control Valve Inc).
2 possible matches (shared part number, not a government interchangeability claim): 1005-01-354-0458, 2915-01-532-7073. Verify interchangeability with system specifications before substitution.
Key specifications for 3030-07: Flow Control Device: DIAPHRAGM AND DISK; Renewable Seat Ring Type: PRESSED-IN; First End Thread Direction: RIGHT-HAND; Second End Relationship with First End: IDENTICAL. 17 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.