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Reversible check valves
DKM provides many accessories around the pump : pulsation dampeners, double diaphragm shock absorber, check valves, diaphragm leakage detector, remote control actuators and frequency inverters.
The novel system patented by DKM, under the name "Reversible Check Valves", permits rotating the valves 180° by means of knobs attached to them, thereby allowing total draining through the inverted valves.
The innovation resides in the installation of the ball check/seat assembly in a ball valve to permit 180° rotation (see drawing to the right).
The reverse operation is performed to prepare the pump for operation.
This system requires no disassembly; the operator never comes into contact with the product and the manoeuvre is rapid and absolutely safe.
These reversible check valves, in the PVDF version, are especially adapted for bromine chemicals.
The materials available (plastics and metals) permit a large range of applications.