I have just fitted a mini heater in my truck.There is a heater valve that fits on the water hose.Then you have a cable that you pull to open the valve which then lets water flow.Now does it matter which way round the valve is fitted to the water pipeflow in flow out.Hope you understand what i am saying. ![:)](//storage.proboards.com/forum/images/smiley/smiley.png)
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