Tonheflow motorized valve manufacturer
Tonhe mainly produces motorized shut off ball valve from 1/4" to 2",
Some valves approved NSF61-G, CE, ROHS and other international certification.
News and Technical
Tonhe A20 A150 motorized ball valve with manual override
motorized ball valve with manual override funciton:
A20 motorized valve with manual override.Instruction For Manual Function
In case of an electric supply failure,
It is possible to operate the actuator manually:
1.Please kind knote when you want to use manual override,power must in off postion.
2.Gently pull up the knod about 3mm, the revove the knob around left and right to turn the valve to open or close.
3.When the red needle in the indicator pointing to S, means the valve is closed. when pointing to O, means the valve is open.
4.After finish the manual override operation, must press down the knob, so that for the normal electric operation.
5.motorized valve from full close to full open(S-O), the manual override need 7 turns,This manual, when you can not turn over, please do not turn hard, or it will be broken, because some A20 can not be 360 degrees to turn
A150 motorized valve with manual override.1.A150 manual override also need when the power off, then can use it. 2.A150 type manual override can turn 360 degrees manually, very easy to operate.