... will replace SK, 2SK series water ring vacuum pump, W, WY, WL series reciprocating vacuum pump.Advantage2BV series pump for air and water ... to 0.26 MPa (maximum absolute pressure).2BV series water ring vacuum pumps as a new generation energy-saving products, ... same properties of SK, 2SK series water ring vacuum pumps and W, WY, WL series reciprocating vacuum pump.Vacuum pump accessories: impeller,disc, ...