WV/T Change-Over Valve

Protego change-over valves type WV/T are mainly used together with other valves or safety devices (e.g. Protego flame arresters) on cryogenic storage tanks and on tanks in process plants of chemical, petrochemical and pharmaceutical industries. 

They increase the operating safety of the technical equipment to be protected because each valve or safety device can be checked, maintained or repaired without any service break-down. 

The valves mainly consist of housing with flange connections DN1 and two lateral connection elbows with flange connections DN2 and the valve disc. If necessary it is possible to displace and turn the connection elbows. 

The valve seats are replaceable. The valve disc with metallic sealing surface is movable on the valve spindle. 

This ensures good adjustment to the valve seats even with high temperature differences. The sealing between valve disc and valve spindle is provided by an O-ring. 

The valve spindle is guided by bearing bushings; to the outside it is sealed by an adjustable packing.