Do you still need to check valve fittings for solar water heater installation?
Now do not install check valve, install the hand to valve, at the bottom
Need, but now is to switch the valve three, without Duojiabie on it
Generally not required. The function of the check valve is to prevent hot water from flowing back into the water pipe so as to heat the pipe.If you don't worry, you can add one, spend a little money, ask for peace of mind.Now the water mixer which will have a check ball.
Need, the solenoid valve automatically control itself has the function of manual water valve was the installation of the installation, but now a lot of pressure to see you still go not installed, they save cost, but will give users the trouble
Need to be installed to prevent hot water from flowing back.The hot water flow is mainly refers to the low pressure tap water (tap water pressure is insufficient to reach the roof) or tap water pressure is not stable and high and low, at this time, Sheung Shui solar water heater, the water heater on the roof, the natural water level drop, the water heater will flow to the water in the road, if there are many hot water heaters, not only not to cold water, the result will make the hot water flow, water reverse, hot water outflow phenomenon caused by the user in tap water downstairs. To solve the backflow of hot water, a check valve is installedIn the control of the water valve can be installed about.
