... valve, Best economic alternative to solenoid valves Long servicing life:100000 times.Application:Solar heating system,hot water heating and ... working current: <80mA Working medium:water,air,gas. Product life: 100,000 times Special function:position indicator;quick open ... reliably,brass gear,PPO parts,large output torque,long product life for 100,000 times. 2. Electrical limit and machinery limit ...