The Valve,regulating,fluid Pressure, cataloged under National Stock Number 4820-01-167-0837, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-167-0837 |
| Primary Part Number | Y603514909 AND N580390057 |
| Item Name | Valve,regulating,fluid Pressure |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 4 |
| Flow Control Device | DIAPHRAGM |
| Second End Relationship with First End | IDENTICAL |
| Body Style | STRAIGHT THRU |
| Face to Face Distance | 7.875 INCHES NOMINAL IN |
| Regulation Type | MANUAL, DOUBLE STAGE |
| First End Flange Thickness | 0.438 INCHES NOMINAL IN |
| First End Flange Outside Diameter | 4.625 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| First End Bolt Hole Diameter | 0.625 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 3.500 INCHES NOMINAL IN |
| End Connection Quantity | 2 |
| Manual Control Method | LEVER |
| Valve Loading Method | SPRING |
| First End Connection Type | PLAIN FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Material | STEEL BODY |
| Media for Which Designed | STEAM |
| Maximum Inlet Pressure Rating | ERR-060 |
| 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 |
|---|---|
| Y603514909 AND N580390057 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 22128N | D/9 Drawing number reference only Leslie Controls, Inc. Dba Leslie Controls Inc |
| 22128NREVC 1-1/ | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
| 22128N 1 1-4IN | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-01-167-0837 is a Valve,regulating,fluid Pressure, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-167-0837 has 1 manufacturer part number on file: Y603514909 AND N580390057 (Leslie Controls, Inc. Dba Leslie Controls Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-270-4958, 4820-01-407-2963. Verify interchangeability with system specifications before substitution.
Key specifications for Y603514909 AND N580390057: First End Bolt Hole Quantity: 4; Flow Control Device: DIAPHRAGM; Second End Relationship with First End: IDENTICAL; Body Style: STRAIGHT THRU. 20 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.