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Closecoupledpumps701 options2-4,000 litre/hrDrivesThese pumps offer quality, rugged, industrial pumping, with allthe pumphead features of cased drives, including a range oftubing sizes and continuous tubing and LoadSure elementoptions, but at the lowest possible whole-life ownership cost.Varmeca variable speeddrivesDenoted in the product code by theletters VI, Varmeca drives bring 10:1speed control and constant torque tothe 521 and 621 ranges. Control is bya large speed knob and forward/reverse switching. No external controlwiring is required. Analogue or digitalremote control models are available, andthere is a Profibus option. Single-phase models and three-phasemodels (as engineered products) are offered. Varmeca drivescan be fitted with the full range of 520 and 620 pumpheads.Duplex models (two pumpheads, indicated by an X in theproduct code) are available as engineered products.Fixed speedDenoted by an F in product codes, three-phase fixed speedclose-coupled pumps are available in all three ranges. There is achoice of drive speed in single pumphead and duplex pumps.Pneumatic variable speedFor installations where an air-operated drive is preferred,Watson-Marlow pneumatic pumps are available, denoted by a Pin their product codes. They typically offer 5:1control ratio at a 7 bar air supply. An exhaustsilencer is fitted, and static build-up isprevented by earth bonding. A filteredand lubricated air supply is required.Pneumatic drives can be fitted with 520,620 and 720 pumpheads. Duplex modelsare not available.701FB701PBPumpheads701R• Flow rates to 2000 litre/hourat 360 rpm• Continuous tubing in five boresizes and six materials• Rugged, tool-unlockable track• Driven occlusion rollers forlonger tube life701RX• Extension version of 701R fortwo-channel pumping• Double the flow to 4,000litre/hour• Fixed speed: 45 rpm, 134 rpm,232 rpm or 348 rpm. Other speedson request• IP55 protection• Flow rates to 1900 litre/hour witha single pumphead• Rugged, chemical and knockresistantfinish• High torque, reversible pneumatic motor• Variable speed: 5:1 with suitable regulator;max 316 rpm• Flow rates to 1800 litre/hour with asingle pumphead• A filtered and lubricated air supply is required• ATEX II 2G (Zone 1) available on requestany 701 drive can be coupledto any 701 pumphead701RE• Patented LoadSure tubingelements in four sizes andfive materials• Guaranteed tube loading: youcan’t get it wrong; improvestube life• Industrial Cam and Grooveconnectors701REX• Extension version of 701RE fortwo-channel pumping• Double the flow to 4,000litre/hour701 pumpheads: maximum flow rates, close-coupled pumps, litre/hrrpm 701R continuous tubing 701RE LoadSure elements9.6mm 12.7mm 15.9mm 19mm 25.4mm 12.7mm 15.9mm 19mm 25.4mm45 53 97 140 190 250 97 140 190 250112* 130 240 340 470 620 240 340 470 620134 160 290 400 560 750 290 400 560 750232 270 500 700 970 1300 500 700 970 1300316** 370 680 950 1300 1800 680 950 1300 1800348 410 750 1000 1500 1900 750 1000 1500 1900360* 420 780 1100 1500 2000 780 1100 1500 2000** Pneumatic model* ATEX models1stchoiceInverter-controlled models are available in allthree ranges, as are specially engineered variantsand OEM pumps. Models with guard switching are available on521 and 621 Varmeca and fixed speed drives.701RE2