Close-Coupled pumps brochure

Close-Coupled pumps brochure

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Watson-Marlow 521VI/REHC, 521F/REHC, 521P/REHC, 521FX/REHC: 4-7 bar IP55 pumps fitted with LoadSure low-pressure element pumpheads

521 close coupled pumps offer IP55 ingress protection for light industrial environments. They offer quality, rugged, industrial pumping, with all the pumphead features of cased drives, but at the lowest whole life cost.




521VI varmeca521VI Varmeca close-coupled drives bring 10:1 speed control, constant torque output and total reliability to the industrial environment. The drive offers 230V and 400V three-phase power options, plus 110V and 230V single-phase.




521F521F Fixed speed drives are three-phase powered.



521FX Duplex521FX Duplex fixed speed drives have twin pumpheads allowing two channel pumping


521P Pneumatic, variable speed drives offer 5:1 control ratio. They require a filtered and lubricated 7 bar air supply. An exhaust silencer is fitted and static build-up is prevented by earth bonding.521P


  521F 521V 521P
Industry approved motors with 2 standard gearing speeds
Supplied with free standing variable frequency drive (VFD)    
Speed start/stop forward/reverse keypad control with remote control features    
Speed control ratio   10:1 5:1
VFD input power 230/3/60, 460/3/60, 115/1/60 in either NEMA 1 or NEMA 4X    
Standard integral gearmotor 3 phase 230/460V 60Hz TEFC  
Optional 115/1/60    
Optional gearbox and NEMA C motor  
Optional explosion proof (XP) motor  
Four vane pneumatic motor with speed limiting    
Optional FDA approved white epoxy paint
Optional baseplate mounting


LoadSure® Element tubing flow rates, ml/min (gph)    
Tube Material Speed 3.2mm
Marprene TH, Bioprene TH Sta-Pure 6-57rpm 11-115(0.2-1.8)
46-470(0.7-7.4) 23-227rpm 46-470(0.7-7.4)

Tubing and hoses for your industry

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    To order this product please contact us on:

    Telephone: +64 (0)9 273 3166

    Fax: +64 (0)9 273 3167

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