The Valve,ball, cataloged under National Stock Number 4820-01-257-6983, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Portland Valve Llc. Government technical data includes 19 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-257-6983 |
| Primary Part Number | 1-1/4-11-3600MT |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 CAP AND 1 HANDLE AND 1 NUT AND 1 WASHER |
| Renewable Seat Ring Type | PRESSED-IN |
| Connection Style | PLAIN,OPTIONAL END(PIPE) ALL ENDS |
| Supplementary Features | MFR REF DATA BULLETIN 212,TYPE 1000 |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 800.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Bonnet Type | PACKING RETAINING |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 1.250 INCHES ALL ENDS IN |
| Maximum Operating Temp | 450.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Media for Which Designed | STEAM SINGLE RESPONSE |
| Material | STEEL COMP 316 BODY |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE PACKING |
| Material | STEEL COMP 316 STEM |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| 1-1/4-11-3600MT PRIMARY | Portland Valve Llc (USA) |
| 1-1/4IN-11-3600MT | Portland Valve Llc (USA) |
NSN 4820-01-257-6983 is a Valve,ball, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-257-6983 has 2 manufacturer part numbers on file: 1-1/4-11-3600MT (Portland Valve Llc), 1-1/4IN-11-3600MT (Portland Valve Llc).
Key specifications for 1-1/4-11-3600MT: Furnished Items and Quantity: 1 CAP AND 1 HANDLE AND 1 NUT AND 1 WASHER; Renewable Seat Ring Type: PRESSED-IN; Connection Style: PLAIN,OPTIONAL END(PIPE) ALL ENDS; Supplementary Features: MFR REF DATA BULLETIN 212,TYPE 1000. 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.