Diaphragm valves offer over 5m cycles at 250psig
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Circor Instrumentation product story
Edited by the Engineeringtalk editorial team
Oct 27, 2000
Totally free of springs, bellows, packing, O-rings and lubricants in the process wetted area, the new GO DV-1 Series diaphragm valves offer an exceptionally long cycle life
Totally free of springs, bellows, packing, O-rings and lubricants in the process wetted area, the new GO DV-1 Series diaphragm valves offer an exceptionally long cycle life, providing in excess of 5 million cycles at 250 psig.
A 'remarkably' low leak rate of better than 1 x 10-9 scc/sec (inboard) ensures containment of the process media, while metal-to-metal seals to atmosphere guarantee that there is no adsorption of undesirable elements into the flow stream.
Long service life is further ensured by the use of Elgiloy diaphragms providing the highest level of corrosion resistance.
Another design feature is a very small cavity volume of less than 0.01cc to help keep dead volume to a minimum.
The valves are available in several standard configurations, either 1/4 turn or multi-turn manual, or with a range of air actuators to give a full working pressure range from vacuum to 3,600 psig, with a burst pressure of 14,400 psig.
Various seat materials are offered for system chemical compatibility including PCTFE, Polyamide, Tefzel and PEEK, while the choice of valve body materials includes Brass, 316L Stainless Steel and Monel.
End connections are available in sizes 1/8in, 1/4in, 6mm and 8mm and in various combinations of Gyrolok, Tube Stub, NPT and BSP/ISO 7/1.
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