We are offering Double Chamber Valve.double chamber valve series dvc/m, dvc/p and dvcf. the double chamber valve is a device mostly used while granular or powder materials must be brawn out under high vacuum conditions (filters, pneumatic transport.) as a standard rotating cells would be very short due to unavoidable leakages. this water-proof valve avoids all leakages and, more important, no wear problems are found as no parts require rotating. the valve can be supplied with mechanical or pneumatic motor-driving, in iron alloy or stainless steel version. features: upper bodylower bodyduct locking valvespneumatic control (dvc/p series only)set of cams and levers for the valve opening and closing (dvc/m series only)