An industrial Sleeved Plug Valve (ISPV) is a plastic plug valve with an input pipe, a set of sleeves, and an output pipe. The sleeve on the input side reduces flow, while the sleeve on the output side restores flow. This type of valve is used in water and wastewater treatment plants, power plants, ships, and refineries. This type of valve has two parts: an “open” part that allows flow and a “closed” part that stops the flow. As water moves through the open part of the valve, it flows through a pair of tubes connected by sets of sleeves.
These sleeves are made from rubber or silicone rubber with small holes. When water flows through the tubes, it gets squeezed through these holes. This squeezes the water into smaller volumes and makes it easier to pass through the open part of the valve. Once the water reaches the closed part of the valve, it is blocked by a gate that opens only when a signal tells it to do so. The gate closes after water exits the gate. This way, ISPVs can control flow between two pipes or between one pipe and another device, such as a compressor or blower.
Sleeved Plug Valve Specifications
| Test Pressure in bar (psi) | ||||
|---|---|---|---|---|
| PRESSURE RATING | CLASS 150 | CLASS 300 | PN 10 | PN 16 |
| Hyd. Shell | 30 (435) | 76 (1102) | 15 (218) | 24.0 (348) |
| Seat | 22 (319) | 55 (798) | 11 (160) | 17.6 (255) |
| Air Seat | 6.9 (100) | |||
Sleeved Plug Valve Material
| Body & Cover | : | Ductile Iron, ASTM A395 Steel / ASTM A216 Gr.WCB / ASTM A351 Gr. CF8 / CF8M / CN7M |
| Plug | : | Steel ASTM A 217 Gr. CA15 / ASTM A 351 Gr. CF8 / CF8M / CN7M |
| Sleeve / Diaphragm | : | PTFE / CFT |
| Wedge Ring | : | PTFE / Grafoil |
| Metal Diaphragm | : | ASTM A 240 Type 304 |
| Thrust Collar & Adj Screw | : | ASTM A276 Type 304 / ASTM A351 Gr.CF8 |
| Static Eliminator | : | ASTM A240 Type 304 |
| Studs / Nuts | : | ASTM A 193 Gr. B8 / ASTM A 194 Gr.8 |
| Adapter / Lever | : | Steel - Powder Coated |
| Gear Unit | : | Housing in Cast Iron, Gear in S.G.Iron & worm in EN8 |
| Bearing | : | PTFE |
| Body Gasket | : | Grafoil |
| Lining | : | Rubber (Natural / Neoprene / Butyl / Hypalone) |
| Surface protection for Ductile Iron & Cast Carbon Steel Valves | ||
| Prime Coat | : | Chlorine free with modified alkyd resin unobjectionable in physiological & toxicological respects |
| Additional External Coating | : | Synthetic Enamel |
Design and Testing Standard
| API 598 | Valve Inspection and Testing |
| PED | Design and fabrication of pressure equipment |
| API 599 | Metal Plug Valves-Flanged, Threaded and Welding Ends |
| ISO 10423 | Valves Design |
| ANSI B16.10, ANSI B16.5, DIN EN 1092-1, DIN EN 558-1 | Face-to-Face and End-to-End Dimensions of Valves |
| ANSI B16.34, ANSI B16.25 | Valves, Flanged and Butt Weld End |
| ASME B16.42 | Ductile Iron Pipe Flanges and Flanged Fittings |
| API 607 | Specification for Fire Test for Valves |
| ISO 15848-1 CO3, TA-LUFT | Fugitive Emissions Testing |
| MSS SP-25 | Standard Marking System for Valves, Fittings, Flanges, and Unions |
| MSS SP-55 | Quality Standard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components |
| MSS SP-61 | Pressure Testing of Steel Valves |
| DIN EN 12266, EPA Method 21 | Testing |
| ASTM / ANSI / EN | Materials |
