Long life diaphragm valve
GF Piping Systems has added the diaphragm valve type 604/605 with integrated pneumatic actuator to its product range. The valve has a compact design that fits standard installation lengths. Its integrated pneumatic actuator is said to enable more than one million closing cycles over its service life.
The connection with the valve body is full plastic without any metal parts. Therefore all materials have the same temperature expansion coefficient which prevents leakages and avoids re-torqueing of screws. Thanks to the optimised linear flow characteristics the kv value is claimed to be up to 30% higher than with comparable valves. The valve is available in DN15 with the pressure rating of PN6.
The valves are available in PVC-U, CPVC, PP-H and PVDF. Diaphragms in EPDM, FPM, PTFE/EPDM and PTFE/FPM enable the handling of aggressive as well as neutral fluids. This makes it suitable for use in water treatment or chemical process applications. The valves meet the standards ISO, BS, ASTM and JIS.
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