Overview

Close-coupled pumps brochure

Close-coupled pumps brochure

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Watson-Marlow 521VI/RELC, 521I/RELC, 521F/RELC, 521FX/RELC: 0-2 bar IP55 pumps fitted with LoadSure low-pressure element pumpheads
 

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

520REL low-pressure LoadSure element pumphead features large swept volume with sprung rollers for high accuracy

Chemically-resistant polyphenylene sulphide track and rotor, and stainless steel rollers and bearings

Low rotational speeds greatly increase tube life and system reliability

Clutched rotor for rapid, effortless tube loading

Rugged, tool-unlockable guard

521VI 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. Control is by a large speed knob and forward/reverse switching.

Varmeca integral inverter offering 10:1 control ratio: 63 rpm, 220 rpm and 275 rpm maximum speeds

Stop/forward/reverse control and analogue or digital remote control. There is a PROFIBUS option

 

521F Fixed speed drives are three-phase powered

There is a choice of speeds: 60 rpm, 213 rpm and 291 rpm

Flow rates from 2.5 ml/min to 4,600 ml/min

Other speeds are available on request

 

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

There is a choice of speeds: 55 rpm and 183 rpm

Flow rates to 860 ml/min from each channel

Twin 520R2C pumpheads for balanced flow in two channels

 

521I Inverter-controlled, variable speed drives include a stand-alone Siemens inverter to control pump speed.

Inverter can be mounted beside the pump or remotely

Three speed ranges: 6-60 rpm; 21-213 rpm; 29-291 rpm

Flow rates to 4,600ml/min

Control

  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

Pumphead

REL LoadSure low-pressure pumphead

 Elements are available in Bioprene TL, Pumpsil, GORE STA-PURE PCS and GORE STA-PURE PFL with quick-release industrial connectors or world-standard ¾in PVDF sanitary connectors.

 

REM LoadSure medium-pressure pumphead

 Elements are available in Bioprene TM, GORE STA-PURE PCS and GORE STA-PURE PFL with quick-release industrial connectors or world-standard ¾in PVDF sanitary connectors.

 

REH LoadSure high-pressure pumphead

 Elements are available in Bioprene TH, Marprene TH and GORE STA-PURE PCS with quick-release industrial connectors or world-standard ¾in PVDF sanitary connectors.

 

R2 continuous tubing pumphead

 2.4mm wall tubing is avalable in five materials for almost any chemical requirement, in tube sizes from 0.5mm to 9.6mm internal diameter.

 

R continuous tubing pumphead

 1.6mm wall tubing is available in eight materials for almost any chemical requirement, in tube sizes from 0.5mm to 8.0mm internal diameter.

Drives

Close coupled drives offer rugged, industrial, quality pumping, with all the pumphead features of cased drives, but at the lowest possible whole-life ownership cost.

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.

Fixed speed drives are three-phase powered. There is a standard choice of speeds, and others are available on request.

Datasheet download

521 Close coupled pumps

Manual download

521F/RELC, 521I/RELC, 521VI/RELC, 521FX/RELC

521 REL Closed Coupled

Performance


LoadSure® Element tubing flow rates, ml/min (gph)
Tube Material Speed 3.2mm 6.4mm 9.6mm

Pumpsil, Sta-Pure PFL, Neoprene
6-57rpm 10-105(0.2-1.7) 40-400(0.6-6.3) 90-905(1.4-14)
  23-227rpm 40-400(0.6-6.3) 155-1560(2.5-24.7) 360-3590(5.7-57)

Marprene TL, Bioprene TL
6-57rpm 10-95(0.2-1.5) 40-380(0.6-6.0) 85-865(1.3-14)
  23-227rpm 40-380(0.6-6.0) 155-1560(2.5-24.7) 345-3430(5.5-54)

Tubing and hoses for your industry

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    To order this product please contact us on:

    Tel: +44 (0) 1326 370370

    You can also send us an email or find your nearest distributor.