arts which contact with liquids can be HT20-40 (Code:H), aluminum cast iron (Code: J), 1Cr18Ni9Ti(code:B) and Cr18Ni12M02Ti (code:M)
4.The sealing type for W type vortex pump has soft packing seal and single end mechanical seal. In addition to WB and WM pump with a single end mechanical seal pump, factory shall install soft packing seal into cast iron vortex pump. If the user needs other types of shaft seals ,please explain it at the time of ordering pump.
5.The rotation direction of w-type vort