The Disk,valve, cataloged under National Stock Number 4820-01-137-2746, 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 6 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-137-2746 |
| Primary Part Number | 31125772 |
| Item Name | Disk,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Pressure Rating | 300.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Temp Rating | 180.0 FAHRENHEIT NOMINAL DEGF |
| Outside Diameter | 1.812 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Inside Diameter | 0.750 INCHES NOMINAL IN |
| Material | RUBBER |
| 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 |
|---|---|
| 31125772 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| C3277 1-1/2 IN PL4207 PIECE 9 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
| C3277 1-1/2 IN PL4141 PIECE 9 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
| 11257-72 BUNA-N | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
| C3256 1-1/2 IN ITEM 9 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
| 11257-72 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
| PL-1382 PIECE 9 | 5/9 Secondary reference Leslie Controls, Inc. Dba Leslie Controls Inc |
| C3256 | D/9 Drawing number reference only Leslie Controls, Inc. Dba Leslie Controls Inc |
| B311257-72 | C/1 Advisory reference — outside the item-of-supply concept Leslie Controls, Inc. Dba Leslie Controls Inc |
NSN 4820-01-137-2746 is a Disk,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-137-2746 has 1 manufacturer part number on file: 31125772 (Leslie Controls, Inc. Dba Leslie Controls Inc).
7 possible matches (shared part number, not a government interchangeability claim): 4820-01-244-1181, 4820-01-246-5978, 4820-01-252-2675. Verify interchangeability with system specifications before substitution.
Key specifications for 31125772: Overall Height: 0.203 INCHES NOMINAL IN; Pressure Rating: 300.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Temp Rating: 180.0 FAHRENHEIT NOMINAL DEGF; Outside Diameter: 1.812 INCHES NOMINAL IN. 6 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.