The Valve,gate, cataloged under National Stock Number 4820-01-311-9543, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Flowserve Inc. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-311-9543 |
| Primary Part Number | SW12111F8M-1.25IN |
| Item Name | Valve,gate |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Flowserve Inc |
| Status | ACTIVE |
| Inlet Relationship with Outlet | IDENTICAL |
| Nominal Pipe Size Accommodated | 1.250 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 1000.0 FAHRENHEIT STEAM AND 100.0 FAHRENHEIT WATER-OIL-GAS DEGF |
| Operating Pressure and Type | 235.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 2000.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Stem Type | RISING |
| Connection Type | SOCKET, WELD, PIPE |
| Material Document and Classification | ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Material Document and Classification | ASTM A105 ASSN STD SINGLE MATERIAL RESPONSE STEM |
| Material Document and Classification | ASTM A1053CYBQJGAASTM A105 ASSN STD SINGLE MATERIAL RESPONSE DISK |
| Valve Size | 1.250 INCHES IN |
| Features Provided | BONNET PACKING |
| Bonnet Type | OUTSIDE SCREW-YOKE |
| Bonnet Attachment Method | BOLTED |
| Pressure Class | ERR-060 |
| Material | STEEL UNS K03504 BODY |
| Material | STEEL UNS K03504 SEAT |
| Material | STEEL UNS K03504 DISK |
| Material | STEEL UNS K03504 STEM |
| 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 |
|---|---|
| SW12111F8M-1.25IN PRIMARY | Flowserve Inc (USA) |
NSN 4820-01-311-9543 is a Valve,gate, manufactured by Flowserve Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-311-9543 has 1 manufacturer part number on file: SW12111F8M-1.25IN (Flowserve Inc).
Key specifications for SW12111F8M-1.25IN: Inlet Relationship with Outlet: IDENTICAL; Nominal Pipe Size Accommodated: 1.250 INCHES IN; Maximum Operating Temp and Media for Which Designed: 1000.0 FAHRENHEIT STEAM AND 100.0 FAHRENHEIT WATER-OIL-GAS DEGF; Operating Pressure and Type: 235.0 POUNDS PER SQUARE INCH (PSI) STEAM MAXIMUM REQUIRED AND 2000.0 POUNDS PER SQUARE INCH (PSI) WATER AND OTHER LIQUIDS MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS. 19 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.