Single-stage and two-stage high efficiency liquid ring vacuum pumps Large capacity single-stage liquid ring vacuum pumps are available from 1,500 to 39,000 CFM with vacuum capabilities up to 29†HgV. Large capacity two-stage liquid ring vacuum pumps are
PPR is the abbreviation of three-type polypropylene, also known as random copolymer polypropylene pipe. It adopts the method of heat welding, has special welding and cutting tools, and has high plasticity. The price is also very economical.