Updated: Jun 1, 2020
This month's manufacturers spotlight is on Posi-flate.
Posi-flate's unique butterfly valve design uses air pressure to expand the seat against the disc, providing even pressure distribution for a bubble-tight seal, every time. Because the seat makes only casual contact with the disc during valve opening and closing, there is minimal disc impingement. This is in contrast to conventional butterfly valves where disc impingement leads to shaving of the seat, decreasing the overall performance and valve life. Substantially less torque is required to open and close the Posi-flate butterfly valve, thus a smaller actuator can be used resulting in lower overall valve cost.
Posi-flate's inflatable seated butterfly valves are used in bulk handling and abrasive services such as in cement foundries, pharmaceutical powder and toner ink - just to name a few. Posti-Flate's materials are FDA compliant for food processing applications as well.
The advantage of using this type of butterfly valve is that it requires less torque and a smaller actuator resulting in lower overall costs. For high cycle applications, Posi-flate makes their own in-house actuator, tested up to 15 million cycles!!
Their seated butterfly valves are available in cast iron, stainless steel, aluminum, nickel-plated cast iron, epoxy coated cast iron, nylon coated cast iron.
Inflatable seat compensates for disc and seat wear
Longer valve life
Minimal seat wear
No disc impingement
Ultra-low torque requirements
Lower actuator costs
More seal contact area
Proven excellent for abrasive and dry solids
Disc designed to prevent material buildup
Double shaft seals
The Posi-flate Series 585/586 inflatable seated butterfly valves are designed for the most severe conditions. The seat is designed for heavy duty applications and higher operating pressures. Standard valve sizes range from 2" (50mm) to 24" (600mm) and fit both ANSI and metric flanges. A full line of actuators, limit switches and controls are available to suit individual applications.