We are offering single head dry vacuum pumps. with one vacuum & one exhaust output model flow rate/displacement max vacuum power reqd. d-lvv 150 9 cu.mtrs/hr 500 mm of hg 0.5 h.p. d-lvv 300 18 cu.mtrs/hr 550 mm of hg 1 h.p. d-lvv 500 30 cu.mtrs/hr 600 mm of hg 2 h.p. d-lvv 850 50 cu.mtrs/hr 600 mm of hg 3