4" High Performance Butterfly Valve, Wafer, All Stainless, Spring Return

Valworx 579704A high performance stainless steel butterfly valve for control of air, oil and other media in corrosive environments. Wafer style valve sandwich mounts between customer supplied ANSI /ASME Class 150 and other international standard flanges and gaskets. Spring return actuators use an air pressure signal (80-120 PSI) to open and springs to close the valve. The valve will fail closed upon loss of air signal.

The valve is direct mounted to the actuator using the international standard ISO5211 mounting pad.

High Performance Butterfly Valve Standard Features

316 stainless steel (CF8M) body

Double offset design greatly reduces seal wear.

17-4PH stainless steel, single piece shaft

RPTFE valve seats and stem seals

Heavy duty, single piece cast and machined disc with integral mounting sleeve

Bi-directional seal design ensures increased sealing force in either flow direction

Integral ISO 5211 mounting pad eliminates additional mounting brackets

Pneumatic Actuator Standard Features

316 Stainless steel body, pistons and pinion

IP66 enclosure rating suitable for washdown applications

Extended cycle life (1 million cycles)

Quarter turn rack & pinion design

Highly visible valve position indicator

Dry or lubricated pilot air

Factory lubricated for normal life

Namur & ISO mounting

Options (see Accessories tab)