The Valve,gate, cataloged under National Stock Number 4820-01-374-7988, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Inc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-374-7988 |
| Primary Part Number | B-40576R9 |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Inc |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Stem Type | RISING |
| Connection Type | THREADED INTERNAL PIPE |
| Valve Size | 1.250 INCHES IN |
| Bonnet Type | INSIDE SCREW |
| Nominal Thread Size | 1.250 INCHES IN |
| Bonnet Attachment Method | BOLTED |
| Pressure Class | ERR-060 |
| Material | STEEL BODY |
| Material | STEEL DISK |
| Material | STEEL CORROSION RESISTING SEAT |
| Material | STEEL CORROSION RESISTING STEM |
| Thread Series Designator | NPT |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| SW12161-1.25IN | Flowserve Inc (USA) |
| F-47150SW12161-1.25IN | Flowserve Inc (USA) |
| B-40576R9 PRIMARY | Flowserve Inc (USA) |
| Reference | Meaning |
|---|---|
| F-47150 | D/9 Drawing number reference only Flowserve Inc |
NSN 4820-01-374-7988 is a Valve,gate, manufactured by Flowserve Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-374-7988 has 3 manufacturer part numbers on file: SW12161-1.25IN (Flowserve Inc), F-47150SW12161-1.25IN (Flowserve Inc), B-40576R9 (Flowserve Inc).
Key specifications for B-40576R9: Inlet Relationship with Outlet: IDENTICAL; Stem Type: RISING; Connection Type: THREADED INTERNAL PIPE; Valve Size: 1.250 INCHES IN. 14 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.