Regulators ZSN 91 and ZSN 92 are designed to control set-up differential pressure and flow rate in process installations, which are connected to regulator's valve outlet or inlet. Their main fields of application are heating and power installations, chemical and food process industries. Regulators are adapted to various working fluids, such as cold and hot water, steam, air and inert gas. Useing for other media require handshake with producer.

• regulator valves remains open without energy suply
• if the flow in installation does not exeed the pre-set value, then the differential pressure in instalation is regulated till the value pre-set by the adjuster is achived