1) According to the type of power supply, respectively, the use of AC and DC solenoid valve.
Generally speaking, AC power is easy to use;
2) voltage specification as far as possible priority selection ac220v.dc24v;
3) power supply voltage fluctuations are usually selected +%10%.-15%, DC allows ±%10 around, if the ultra-poor, must adopt a voltage regulator measures;
4) The rated current and power consumption should be selected according to the power supply capacity. Attention should be paid to the high VA value when starting the AC, the indirect pilot solenoid valve should be preferred when the capacity is insufficient.