This bypass valve kit allows you to close your pool heat pump when not in use. Although its use is not indispensable, it is highly recommended since it prevents the heat pump from experiencing possible overloads or other accidents, it also protects the water circuit if the pump does not work optimally... In short, it takes care of your pump and extends the heat life of it, so you can take advantage of the maximum amount. The AR2000 model from Gre has several advantages: Installation is quick and easy. You can do it yourself and it will cost you nothing. This allows you to save energy, a very important advantage, especially in the long term. Prevents the heat pump from undergoing serious damage and deteriorating prematurely. This kit provides you with all the necessary components to perform a bypass in the hydraulic system of the installation and your pool.