WORKING PRINCIPLE: The most remarkable character of JS pump is a Venturi system consisted of a tube and a nozzle housed in its pump body. With a larger water tank in the front of the pump, JS achieved self-priming using the Venturi system. The total delivery produced by its centrifugal impeller is sent only partly to the delivery outlet. The remaining water is circulated and JET through the nozzle in Venturi system, this flow with a tremendous speed lead the water in suction chamber and generates the necessary vacuum to self-prime the pump. JS series pumps are special design for Europe market. Manufactured with rust proof materials and equipped with waterproof plug & power cord, luminous and watertight switch. These pumps are suitable for domestic applications and the automatic distribution of water from small and medium-sized surge tanks, for watering gardens etc. These pumps should be installed in a covered area, Protection Type ed against the weather.