Posiflate Butterfly Valves

Posiflate - Inflatable Seat Butterfly Valves - Less friction, low torque, less wear, longer life.

Posiflate'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 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 posiflate butterfly valve, thus a smaller actuator is used resulting in lower overall valve cost.

In actual comparison tests and documented field applications, the posiflate butterfly valve dramatically outperformed all other butterfly valves. In fact, a posiflate valve surviving one to three million cycles, even in extremely abrasive applications, is not uncommon. For dry solids, gases, and slurry applications, the posiflate inflatable seat butterfly valve is unsurpassed.

The posiflate series 585/586 inflatable seat 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 50mm (2") to 600mm (24") and fit both ANSI and metric flanges. A full line of actuators, limit switches and controls are available to suit individual applications.

Common materials handled: cement, fly ash, slag, magnesium oxide, lime, concentrates, gypsum, plaster, and mineral sands.