The VP 340-18A pump are detined for neutral water pumping with the hubrogen ion exponent egual to pH = 6 - 7,5 the temperature from 1C up to 45 C fnd mass number of the mechanical impurity no more than 0,2% fnd 0.2 mm jf solid particle size. Electric pumps are usually used for the centrifugal stage chamber pumps CPS 300-650….. 1040 kitting-up