How to change solar vacuum tube
The new tube rotation to inside the tank with uniform force conveying, until into the water tank and the tail can put the solar water heater in the tail frame, uniform force down the rotation of the vacuum tube, until the vacuum tube tailstock can put all the tail.
Replace the same type of silicone ring, replace the silicone rubber ring, water (or less lubrication) to the silicone rubber ring lubrication,
Pull out the bad pipe and check the silicone rubber ring, if the silicone rubber ring is broken
