The Seat,valve, cataloged under National Stock Number 4820-01-131-9605, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ross Valve Manufacturing Company, Inc. Div Ross Valve Mfg Co.. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-131-9605 |
| Primary Part Number | 20WR-1.5-19 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ross Valve Manufacturing Company, Inc. Div Ross Valve Mfg Co. |
| Status | ACTIVE |
| Body Outside Diameter | 1.750 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | 20WR-1.5-9 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.688 INCHES NOMINAL IN |
| Material | LEATHER OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| DM5760-17 | Badger Fire Protection Inc (USA) |
| 20WR-1.5-19 PRIMARY | Ross Valve Manufacturing Company, Inc. Div Ross Valve Mfg Co. (USA) |
| Reference | Meaning |
|---|---|
| DM5760 | D/9 Drawing number reference only Badger Fire Protection Inc |
| DM5670-17 | C/1 Advisory reference — outside the item-of-supply concept Badger Fire Protection Inc |
| DM5760-17 | 5/9 Secondary reference Badger Fire Protection Inc |
NSN 4820-01-131-9605 is a Seat,valve, manufactured by Ross Valve Manufacturing Company, Inc. Div Ross Valve Mfg Co., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-131-9605 has 2 manufacturer part numbers on file: DM5760-17 (Badger Fire Protection Inc), 20WR-1.5-19 (Ross Valve Manufacturing Company, Inc. Div Ross Valve Mfg Co.).
Key specifications for 20WR-1.5-19: Overall Height: 0.156 INCHES NOMINAL IN; Body Outside Diameter: 1.750 INCHES NOMINAL IN; Style Designator: PLAIN; Material Document and Classification: 20WR-1.5-9 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 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.