Solar panel

A solar panel comprising tubing through which water from a swimming pool is recirculated, the tubing being adapted to be exposed to the sun for heating the water to a temperature whereby the pool is heated, and a housing for the tubing, the housing have a transparent screen covering the tubing, the arrangement being such that the housing retains heat therewithin for increasing the temperature of the tubing above that outside the housing;

• a tubular member having a header portion and opposed end portions, the header portion being located with the housing and each end portion protruding outwardly from a respective side wall of the housing so as to define an opening at the side wall, the end portions being in liquid flow communication with the header portion, and the header portion being in liquid flow communication with the tubing so that heated, recirculating water passing through the tubing exits the solar panel through one of the end portions, and unheated, recirculating water passing through the opposed end portion enters the solar panel for heating;
• a key extending outwardly from each end portion and a key way formed continuously with a hole in a respective side wall through which the tubular member passes, the key being engaged within the key way;
• and
• a circlip which is removably located circumferentially around each end portion so as to space apart a barrel union from the respective side wall, the barrel union being adapted to engage the end portion.