DEZHI-TANK:With a replaceable membrane. This line is idealfor every modern installation and can be applied to any type of pump.The real volume of the pressure tank is greater than common tank. A compressor is not necessary since an air cushion, separated fromthe water by the membrane , maintains a constant pressure in the tank.The new type pressure tanks can also be provided with stainliesssteel flanges,applied for water booster system ,pumps, potable water storage.