ZRHP or ZDHP electric single seat control valve is commonly used in the operation condition of the medium pressure difference is small, the pressure difference is not more than 0.4 MPa, the control valve diameter less than DN40, and also can extend appropriately the differential pressure, the valve diameter is larger, the differential pressure requirement is smaller, otherwise, the electric single seat control valve may leak because of the large pressure difference and electric actuator output thrust is not enough to cause the electric control valve closed fully, the electric single seat control valve is likely to cause long-term overload and burn out motor, electric actuator and drive gear. 

According to the different media, electric single seat control valve can use stainless steel 304, 316 stainless steel, carbon steel and so on different body materials. if the medium is corrosive,the  electric single seat control valve body can choose 304 or 316 stainless steel material, if the temperature not to exceed 150 degrees of strong corrosive medium, electric control valve can choose ZRHPF electric fluorine lined control valve,carbon steel body lined PTFE/PFA/FEP.

The electric single seat control valve actuator can choose 3810L or PSL type, the model is ZRHP and ZDHP respectively, the performance of two kinds of electric control valves are same excellent and reliable.In addition, if there are explosion protection requirements in the field, it is necessary to select the electric explosive-proof control valve of BZRHP model.According to these basic selection principles, the users can choose their own electric control valve products.