The main working principle of the plug valve is to control the flow of fluid by rotating a plug body with a hole (valve plug or spigot). When the plug is rotated by 90 degrees, the passage ports on it are aligned or staggered with the passage ports on the valve body, so as to achieve the opening or closing of the valve. Multi-port plug valves are designed for throttling and diverting a wide range of media, from clear water to solids-containing liquids, sludge, fibrous slurries, abrasive slurries and viscous liquids. 3-way and 4-way port arrangements conform to standard 3-way and 4-way sizes, allowing for a wide range of flow combinations.
| Size Range | 3-16" (80 - 400mm) |
| Pressure Rating | 125 psi (860 kPa) CWP |
| Temperature Range | to 400°F (200°C) |
| Body Material | Cast iron, ni-resist, aluminum, carbon steel, 316 steel |
Design And Testing Standards
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
Control Plug Valve
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