The Valve,ball, cataloged under National Stock Number 4820-01-291-7956, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-291-7956 |
| Primary Part Number | 2-530S-31-3600-TT |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES ALL ENDS |
| Flange Face Design | RAISED STRAIGHT ALL ENDS |
| Bolt Circle Nominal Diameter | 5.000 INCHES ALL ENDS IN |
| Connection Type | FLANGE ALL ENDS |
| Style Designator | STRAIGHT THRU FLANGED ENDS |
| Bolt Hole Nominal Diameter | 0.750 INCHES ALL ENDS IN |
| Operating Pressure | 275.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Valve Size | 2.000 INCHES IN |
| Maximum Operating Temp | 100.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nominal Outside Diameter | 6.500 INCHES ALL ENDS IN |
| Bolt Hole Quantity | 8 ALL ENDS |
| Face to Face Distance | 7.000 INCHES IN |
| Material | STEEL COMP 316 BODY |
| Material | STEEL COMP 316 STEM |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE SEAT |
| Material | STEEL COMP 316 FLOW CONTROL DEVICE |
| 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 |
|---|---|
| 2-530S-31-3600-TT PRIMARY | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| 2-530S-31-3600-TT-2 | 5/9 Secondary reference Portland Valve Llc |
NSN 4820-01-291-7956 is a Valve,ball, manufactured by Portland Valve Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-291-7956 has 1 manufacturer part number on file: 2-530S-31-3600-TT (Portland Valve Llc).
Key specifications for 2-530S-31-3600-TT: Flange Shape: ROUND WITH HOLES ALL ENDS; Flange Face Design: RAISED STRAIGHT ALL ENDS; Bolt Circle Nominal Diameter: 5.000 INCHES ALL ENDS IN; Connection Type: FLANGE ALL ENDS. 17 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.