Dobrý den,osobně bych to řešil takto.https://www.google.com/search?q=p%C5%99%C3%ADlo%C5%BEn%C3%BD+termostat++na+potrub%C3%AD&tbm=isch&ved=2ahUKEwjd29rH1Ov5AhV2g84BHdSnBbMQ2-cCegQIABAA&oq=p%C5%99%C3%ADlo%C5%BEn%C3%BD+termostat++na+potrub%C3%AD&gs_lcp=CgNpbWcQDDIECAAQGDoFCAAQgAQ6BAgAEB5Q9wtY-i9gk0RoAHAAeACAAagBiAH-B5IBBDExLjGYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=pXwMY531J_aGur4P1M-WmAs&bih=656&biw=1280
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