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MANUFACTURING RANGE :
Phixer Triple-Offset Zero Leakage Butterfly Valve
Manufacturing Range to API609
Carbon and Alloy Steel, 316 Stainless, Duplex, Monel, Hastelloy, Inconel, Alloy20 and Titanium.
For valve sizes, ASME classes and designs not shown, please consult Phixer Valves.
OPERATION PRINCIPLE :
Triple-Offset Valve provides a Bi-directional Bubble tight shut-off to API 598. This Geometry ensures that the Disc Seal contacts the Body seat only at the final shut-off position without rubbing, providing a torque generated resilient seal with sufficient "wedging" to ensure a uniform seal contact.
The shaft is offset behind the seat axis to allow complete sealing contact around the entire seat.
The shaft centerline is offset from the pipe and valve which provides interference fee opening and closing of valve.
The seat cone axis is offset from the shaft centerline to eliminate friction during closing and opening and to achieve uniform compressive sealing around the entire seat.
FRICTION FREE SEALING FOR LONG CYCLE LIFE :
THE LAMINATED DISC SEAL
Torque seating during closing of the valve provides
uniform forces around the entire circumference of the valve sat.
Phixer provides an extra rigid retaining ring with bolting designed in response to ASME stress calculations.
VALVE PARTS & MATERIALS :
ASTM STANDARDS :
PHYSICAL DIMENSIONS AND WEIGHTS :
METRIC DIMENSIONS AND WEIGHTS :
Cv FLOW COEFFICIENT :
PRESSURE/TEMPERATURE RATINGS :
CLOSING TORQUES - Nm :
