AP Automatic Peripheral Pump https://www.wertome.com/product/automatic-peripheral-pump/ap-automatic-peripheral-pump.html Suitable for use with both clean hot and cold water that does not contain abrasive particles and liquids that are not chemically aggressive towards the materials from which the pump is made. They are easy to use by pressure control system,they are ideal for domesticuse and in particular for distributing water in combination with small pressure sets and for the irrigation ofgarden and allotments. The pump should be installed in an enclosed environment, or sheltered from inclement weather.