A range of valves, actuators and controls as complete solution to all piping needs, are offered by george fischer piping systems, india branch office, offers a range of valves, actuators and controls as complete solution to all piping needs. The as interface set type topmatic is meant for diastar dn15dn150 valves. Following are some benificial features of these valves includeeatures: compact unit for control and feed back signal; pilot valve is already included; no air consumption in a settled state; separate supply [black cable] is possible on request; equipped for the version 2 1 [62 slaves], electrical and optical position signal; and protection ipo5: standard fc and fo, da on request. The as interface set type topmatic is meant for diastar dn15dn150 valves.