Pumps - close-coupled

600 series close-coupled pumps

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Overview

Close-coupled industrial pump with 620RE LoadSure® element pumphead

621F/RE, 62VI/RE, 621I/RE, 621FX/RE: 0 bar to 2 bar IP55 pumps fitted with LoadSure® tubing element pumpheads

621 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.

  • RE pumpheads: flow rates up to 19 L/min at 2 bar peak pressure
  • RE pumpheads using GORE STA-PURE PCS elements: flow rates up to 19 L/min at 4 bar peak pressure
  • Retractable rollers for tube loading and CIP and SIP
  • Rugged, tool-unlockable guard

 621VI Varmeca close-coupled drives bring 10:1 speed control, constant torque output and total reliability to the industrial environment. The drive offers 230 V and 400 V three-phase power options, plus 110 V and 230 V single-phase. Control is by a large speed knob and forward/reverse switching.

  • Varmeca integral inverter offering 10:1 control ratio: 77 rpm, 146 rpm and 261 rpm maximum speeds
  • Flow rates from 0.09 L/min to 19 L/min
  • Stop/forward/reverse control and analogue, digital, remote and PROFIBUS control options

 621F Fixed speed drives are three-phase powered

  • There is a choice of speeds: 77 rpm and 251 rpm
  • Flow rates from 0.1 L/min to 18 L/min
  • Other speeds are available on request

 621FX Duplex fixed speed drives have twin pumpheads allowing two channel pumping.

  • There is a choice of speeds: 69 rpm and 183 rpm
  • Flow rates to 12.2 L/min from each channel

 621I 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 rpm to 60 rpm; 21rpm to 213 rpm 29 rpm 291 rpm
  • Flow rates to 18.1 L/min

Features and benefits

  • Simplex flow rates up to 18 L/min
  • Discharge pressures up to 4 bar with element style pumpheads
  • 620RE two roller or 620RE4 four roller pumphead with CIP/SIP rotor and rapid snap-fit tube loading, pumphead accepts both 12 mm and 17 mm industrial and sanitary LoadSure elements
  • Compact design with foot mounted gearbox
  • 24-hour continuous duty with a two-year warranty
  • Reversible operation
  • Fixed Speed options: 230/460 VAC, 60 Hz 3-phase or 120/240 VAC, 60 Hz, 1-phase. Variable speed options supplied with 230/3/60, 460/3/60, 120/1/60 or 220/1/60 Variable frequency drive

Technical summary

Max. flow rate 18 L/min
Min. flow rate0.92 L/min
Max. operating pressure4 bar
Max. operating pressure60 psi
Motor typesFixed speed motor 
Max. operating speed250 rpm
StandardsATEX 2014/34/EU, CE, EX II 2G Exh IIB T4 G6 X 
Ingress ProtectionIP55 
Weight18.5 - 26 kg
Power supply230/400V 3ph, 50Hz 

Technical Summary table lists features available within the range. See ‘Technical specifications’ tab for model specific information.

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Performance

621F with 620R pumphead performance

Tube bore and flow rates (L/min) Elements
Fixed 620R continuous tubing 620RE LoadSure 620RE4 LoadSure
Material rpm 6.4mm 9.6mm 12.7mm 15.9mm 12.0mm 17.0mm 12.0mm 17.0mm
Marprene, Bioprene TM 77/250 2.9/9.3 4.5/14.8 2.4/7.9 3.2/10.3
Marprene, Bioprene TL 77/250 1.0/3.3 1.9/6.3 3.1/10 4.2/11 2.9/9.3 4.7/16.9 2.4/7.9 3.6/11.8
Pumpsil Platinum Silicone Neoprene, STA-PURE PCS 77/250 0.92/3.0 2.1/6.8 3.2/11 4.7-14 3.0/9.7 4.7/15 2.5/8.3 3.3/11
STA-PURE PFL 77/250 0.92/3.0 1.9/6.3 3.1/10 4.7-15 3.1/10.0 5.6/18 2.6/8.5 3.9/13
Tube bore and flow rates (L/min) Elements
Fixed 620R continuous tubing 620RE LoadSure 620RE4 LoadSure
Material rpm 6.4mm 9.6mm 12.7mm 15.9mm 12.0mm 17.0mm 12.0mm 17.0mm
Marprene, Bioprene TM 77/250 2.9/9.3 4.5/14.8 2.4/7.9 3.2/10.3
Marprene, Bioprene TL 77/250 1.0/3.3 1.9/6.3 3.1/10 4.2/11 2.9/9.3 4.7/16.9 2.4/7.9 3.6/11.8
Pumpsil Platinum Silicone Neoprene, STA-PURE PCS 77/250 0.92/3.0 2.1/6.8 3.2/11 4.7-14 3.0/9.7 4.7/15 2.5/8.3 3.3/11
STA-PURE PFL 77/250 0.92/3.0 1.9/6.3 3.1/10 4.7-15 3.1/10.0 5.6/18 2.6/8.5 3.9/13
Tube bore and flow rates (L/min) Elements
Fixed 620R continuous tubing 620RE LoadSure 620RE4 LoadSure
Material rpm 6.4mm 9.6mm 12.7mm 15.9mm 12.0mm 17.0mm 12.0mm 17.0mm
Marprene, Bioprene TM 77/250 2.9/9.3 4.5/14.8 2.4/7.9 3.2/10.3
Marprene, Bioprene TL 77/250 1.0/3.3 1.9/6.3 3.1/10 4.2/11 2.9/9.3 4.7/16.9 2.4/7.9 3.6/11.8
Pumpsil Platinum Silicone Neoprene, STA-PURE PCS 77/250 0.92/3.0 2.1/6.8 3.2/11 4.7-14 3.0/9.7 4.7/15 2.5/8.3 3.3/11
STA-PURE PFL 77/250 0.92/3.0 1.9/6.3 3.1/10 4.7-15 3.1/10.0 5.6/18 2.6/8.5 3.9/13

621DF with 620RA (ATEX) pumphead performance

Tube bore and flow rates (L/min) Elements
620RA continuous tubing 620REA Loadsure 620RE4A Loadsure
Material rpm 6.4mm 9.6mm 12.7mm 15.9mm 12.0mm 17.0mm 12.0mm 17.0mm
Marprene, Bioprene TM 79/245 2.9-9.1 4.7-14 2.5-7.7 3.3-10
Marprene, Bioprene TL 79/245 1.0-3.2 2.0-6.1 3.2-9.8 4.3-11 2.9-9.1 5.3-16 2.5-7.7 3.7-12
Pumpsil, Neoprene, STA-PURE PCS 79/245 0.95-2.9 2.1-6.6 3.3-10 4.9-14 3.1-9.5 4.8-15 2.6-8.1 3.4-10
STA-PURE PFL 79/245 0.95-2.9 2.0-6.1 3.2-9.8 4.8-15 3.1-9.8 5.7-18 2.7-8.3 4.0-12

621DF with 620REA (ATEX) pumphead performance

Tube bore and flow rates (L/min) Elements
620RA continuous tubing 620REA Loadsure 620RE4A Loadsure
Material rpm 6.4mm 9.6mm 12.7mm 15.9mm 12.0mm 17.0mm 12.0mm 17.0mm
Marprene, Bioprene TM 79/245 2.9-9.1 4.7-14 2.5-7.7 3.3-10
Marprene, Bioprene TL 79/245 1.0-3.2 2.0-6.1 3.2-9.8 4.3-11 2.9-9.1 5.3-16 2.5-7.7 3.7-12
Pumpsil, Neoprene, STA-PURE PCS 79/245 0.95-2.9 2.1-6.6 3.3-10 4.9-14 3.1-9.5 4.8-15 2.6-8.1 3.4-10
STA-PURE PFL 79/245 0.95-2.9 2.0-6.1 3.2-9.8 4.8-15 3.1-9.8 5.7-18 2.7-8.3 4.0-12

621DF with 620RE4A (ATEX) pumphead performance

Tube bore and flow rates (L/min) Elements
620RA continuous tubing 620REA Loadsure 620RE4A Loadsure
Material rpm 6.4mm 9.6mm 12.7mm 15.9mm 12.0mm 17.0mm 12.0mm 17.0mm
Marprene, Bioprene TM 79/245 2.9-9.1 4.7-14 2.5-7.7 3.3-10
Marprene, Bioprene TL 79/245 1.0-3.2 2.0-6.1 3.2-9.8 4.3-11 2.9-9.1 5.3-16 2.5-7.7 3.7-12
Pumpsil, Neoprene, STA-PURE PCS 79/245 0.95-2.9 2.1-6.6 3.3-10 4.9-14 3.1-9.5 4.8-15 2.6-8.1 3.4-10
STA-PURE PFL 79/245 0.95-2.9 2.0-6.1 3.2-9.8 4.8-15 3.1-9.8 5.7-18 2.7-8.3 4.0-12

Specifications

Technical specifications

621F with 620R pumphead621F with 620RE pumphead621F with 620RE4 pumphead621DF with 620RA (ATEX) pumphead621DF with 620REA (ATEX) pumphead621DF with 620RE4A (ATEX) pumphead
FlowRateRange0.92 L/min to 15 L/min0.92 L/min to 18 L/min0.92 L/min to 13 L/min0.95 L/min to 15 L/min2.9 L/min to 18 L/min2.5 L/min to 12 L/min
FlowRateRange0.24 USGPM to 3.96 USGPM0.24 USGPM to 4.75 USGPM0.24 USGPM to 3.43 USGPM
Max. operating pressure30 psi (2 bar) 60 psi (4 bar) 60 psi (4 bar) 30 psi (2 bar) 60 psi (4 bar) 60 psi (4 bar) 
Motor typesFixed speed motor Fixed speed motor Fixed speed motor Fixed speed motor Fixed speed motor Fixed speed motor 
StandardsCE CE CE ATEX 2014/34/EU, CE, EX II 2G Exh IIB T4 G6 X ATEX 2014/34/EU, CE, EX II 2G Exh IIB T4 G6 X ATEX 2014/34/EU, CE, EX II 2G Exh IIB T4 G6 X 
Ingress ProtectionIP55 IP55 IP55 IP55 IP55 IP55 
Noise75dB(A) at 1m 75dB(A) at 1m 75dB(A) at 1m <70dB(A) at 1m <70dB(A) at 1m <70dB(A) at 1m 
Weight 40.43 lbs (18.5 kg) 40.43 lbs (18.5 kg) 40.43 lbs (18.5 kg) 57 lbs (26 kg) 57 lbs (26 kg) 57 lbs (26 kg) 
Power supply230/400V 3ph, 50Hz 230/400V 3ph, 50Hz 230/400V 3ph, 50Hz 230/400V 3ph, 50Hz 230/400V 3ph, 50Hz 230/400V 3ph, 50Hz 

Table lists details for fixed speed pumps. For more detail on drive, AC motor and inverter options please contact your local Watson-Marlow Fluid Technology Solutions representative.

621F with 620R pumphead dimensions

621F with 620RE pumphead dimensions

621F with 620RE4 pumphead dimensions

621DF with 620RA (ATEX) pumphead dimensions

621DF with 620REA (ATEX) pumphead dimensions

621DF with 620RE4A (ATEX) pumphead dimensions

Materials of construction

GearboxAluminum, Cast iron
MotorCast aluminum alloy, Cast iron
Pumphead rotor assemblyFortron 1140L0 (PPS), PPS/10% stainless steel strands
SealsNeoprene
Tube clamp assemblyPP (polypropylene)

Information listed covers the complete range of fixed speed pumps. For detailed specifications of individual models/components and other drive/pumphead options, refer to user manual or contact WMFTS representative.

Documentation

Brochures

  1. Biotechnology and Pharmaceutical overview (US).pdf
    PDF - 1023.6kb
  2. Mining Sector Brochure (US).pdf
    PDF - 881.3kb
  3. Industrial overview (US).pdf
    PDF - 718.5kb
  4. Brewing industry (EN).pdf
    PDF - 210.3kb

Datasheets

  1. 621F with 620RE4 pumphead datasheet (US).pdf
    PDF - 820kb
  2. 621F with 620RE pumphead datasheet (US).pdf
    PDF - 819.9kb
  3. 621DF with 620REA (ATEX) pumphead datasheet (US).pdf
    PDF - 945.5kb
  4. 621F with 620R pumphead datasheet (US).pdf
    PDF - 948.1kb
  5. 621DF with 620RA (ATEX) pumphead datasheet (US).pdf
    PDF - 1003.7kb
  6. 621DF with 620RE4A (ATEX) pumphead datasheet (US).pdf
    PDF - 943.6kb

Manuals

  1. 621 close-coupled manual (EN).pdf
    PDF - 1mb

Pumpheads

620R continuous tubing pumphead

  • 620R pumphead accommodates 3.2mm wall continuous tubing in four bore sizes from 6.4mm to 15.9mm, giving up to 16 liter/min (4.2 gpm) flow at up to 2bar (30psi) pressure.
  • Tubing is available in eight materials for almost any chemical requirement.

620RE LoadSure tube element pumphead

  • 620RE is a high-performance, accurate, two-roller pumphead with LoadSure rapid tube element change technology.
  • 4mm wall elements in 12mm or 17mm bore sizes allow pressures up to 4bar (60psi) and flow rates up to 18 liter/min (4.8gpm).
  • Elements are available with industry-standard tri-clamp sanitary fittings; and with Cam and Groove fittings for industry.

620RE4 LoadSure tube element pumphead

  • 620RE4 is a high-performance, accurate, four-roller pumphead with LoadSure rapid tube element change technology.
  • 4mm wall elements in 12mm or 17mm bore sizes allow pressures up to 4bar (60psi) and flow rates up to 13 liter/min (3.32gpm) with minimized pulsation.
  • Elements are available with industry-standard tri-clamp sanitary fittings; and with Cam and Groove fittings for industry.

620L twin-channel pumphead

620L is a specialist 2bar, six-roller pumphead designed for accurate dispensing to ±0.5%. Minimal pulsation is achieved by splitting the inlet flow into two tubes passing over twin, offset tracks. The two sets of out-of-phase pulses cancel each other out when the channels merge.

  • Uses 4.0mm wall Y-elements in a choice of six materials, or continuous tubing
  • Two single channels are also available
  • Tubing choices: 8mm, 12mm, and 16mm bore, offering flow rates from 0.002 liter/min to 12.4 liter/min (0.00053 gpm to 3.3gpm)
  • Dispenses 500ml in 3.5 seconds

Order Information

Product codes

621F with 620R pumphead product codes

Pump rpm Supply Product code
621F/R 77 230/400V 50Hz 3ph 0.37kW 060.8122.020 - *10:1
250 230/400V 50Hz 3ph 0.37kW 060.8152.020 - *5:1

*10:1 or 5:1 speed reduction available using VFD
*ATEX pumps 10:1 speed reduction available using VFD from geared units fitted with PTC thermistors
For alternative speeds and motor options contact Watson-Marlow Applications Engineering Department.

Pumphead Description Product code
620R Two roller continuous tubing pumphead for maximum 2 bar peak pressure 064.0211.000
Tubing
Bore/wall (mm) Bioprene Marprene Platinum Silicone PureWeld XL
6.4x3.2 933.0064.032 902.0064.032 913.A064.032
9.6x3.2 933.0096.032 902.0096.032 913.A096.032 942.0096.032
12.7x3.2 933.0127.032 902.0127.032 913.A127.032 942.0127.032
15.9x3.2 933.0159.032 902.0159.032 913.A159.032
Bore/wall (mm) STA-PURE STA-PURE PFL
6.4x3.2 961.0064.032 966.0064.032
9.6x3.2 961.0096.032 966.0096.032
12.7x3.2 961.0127.032 966.0127.032
15.9x3.2 961.0159.032 966.0159.032
Loadsure Elements
Material 12mm Tri-Clamp 3/4” PVDF connectors 17mm Tri-Clamp 3/4” PVDF connectors 12mm C&G with PP 3/4” connectors 17mm C&G with PP 3/4” connectors
Bioprene TL 0-2 bar (peak) 933.0120.PFT 933.0170.PFT
Bioprene TM 0-4 bar (peak) 933.M120.PFT 933.M170.PFT
STA-PURE PCS 0-4 bar (peak) 961.0120.PFT 961.0170.PFT
Pumpsil (0-2 bar peak) 913.A120.PFT 913.A170.PFT
Marprene TL 0-2 bar (peak) 902.0120.PPC 902.0170.PPC
Marprene TM 0-4 bar (peak) 902.P120.PPC 902.P170.PPC
Pumpsil 0-2 bar (peak) 913.A120.PPC 913.A170.PPC

621F with 620RE pumphead product codes

Pump rpm Supply Product code
621F/RE 77 230/400V 50Hz 3ph 0.37kW 060.8122.E20 - *10:1
250 230/400V 50Hz 3ph 0.37kW 060.8152.E20 - *5:1

*10:1 or 5:1 speed reduction available using VFD
*ATEX pumps 10:1 speed reduction available using VFD from geared units fitted with PTC thermistors
For alternative speeds and motor options contact Watson-Marlow Applications Engineering Department.

Pumphead Description Product code
620RE Two roller LoadSure element pumphead for maximum 4 bar peak pressure 064.0231.000
Tubing
Bore/wall (mm) Bioprene Marprene Platinum Silicone PureWeld XL
6.4x3.2 933.0064.032 902.0064.032 913.A064.032
9.6x3.2 933.0096.032 902.0096.032 913.A096.032 942.0096.032
12.7x3.2 933.0127.032 902.0127.032 913.A127.032 942.0127.032
15.9x3.2 933.0159.032 902.0159.032 913.A159.032
Bore/wall (mm) STA-PURE STA-PURE PFL
6.4x3.2 961.0064.032 966.0064.032
9.6x3.2 961.0096.032 966.0096.032
12.7x3.2 961.0127.032 966.0127.032
15.9x3.2 961.0159.032 966.0159.032
Loadsure Elements
Material 12mm Tri-Clamp 3/4” PVDF connectors 17mm Tri-Clamp 3/4” PVDF connectors 12mm C&G with PP 3/4” connectors 17mm C&G with PP 3/4” connectors
Bioprene TL 0-2 bar (peak) 933.0120.PFT 933.0170.PFT
Bioprene TM 0-4 bar (peak) 933.M120.PFT 933.M170.PFT
STA-PURE PCS 0-4 bar (peak) 961.0120.PFT 961.0170.PFT
Pumpsil (0-2 bar peak) 913.A120.PFT 913.A170.PFT
Marprene TL 0-2 bar (peak) 902.0120.PPC 902.0170.PPC
Marprene TM 0-4 bar (peak) 902.P120.PPC 902.P170.PPC
Pumpsil 0-2 bar (peak) 913.A120.PPC 913.A170.PPC

621F with 620RE4 pumphead product codes

Pump rpm Supply Product code
621F/RE4 77 230/400V 50Hz 3ph 0.37kW 060.8122.E40 - *10:1
250 230/400V 50Hz 3ph 0.37kW 060.8152.E40 - *5:1

*10:1 or 5:1 speed reduction available using VFD
*ATEX pumps 10:1 speed reduction available using VFD from geared units fitted with PTC thermistors
For alternative speeds and motor options contact Watson-Marlow Applications Engineering Department.

Pumphead Description Product code
620RE4 Four roller LoadSure element pumphead for maximum 4 bar peak pressure 064.0431.000
Tubing
Bore/wall (mm) Bioprene Marprene Platinum Silicone PureWeld XL
6.4x3.2 933.0064.032 902.0064.032 913.A064.032
9.6x3.2 933.0096.032 902.0096.032 913.A096.032 942.0096.032
12.7x3.2 933.0127.032 902.0127.032 913.A127.032 942.0127.032
15.9x3.2 933.0159.032 902.0159.032 913.A159.032
Bore/wall (mm) STA-PURE STA-PURE PFL
6.4x3.2 961.0064.032 966.0064.032
9.6x3.2 961.0096.032 966.0096.032
12.7x3.2 961.0127.032 966.0127.032
15.9x3.2 961.0159.032 966.0159.032
Loadsure Elements
Material 12mm Tri-Clamp 3/4” PVDF connectors 17mm Tri-Clamp 3/4” PVDF connectors 12mm C&G with PP 3/4” connectors 17mm C&G with PP 3/4” connectors
Bioprene TL 0-2 bar (peak) 933.0120.PFT 933.0170.PFT
Bioprene TM 0-4 bar (peak) 933.M120.PFT 933.M170.PFT
STA-PURE PCS 0-4 bar (peak) 961.0120.PFT 961.0170.PFT
Pumpsil (0-2 bar peak) 913.A120.PFT 913.A170.PFT
Marprene TL 0-2 bar (peak) 902.0120.PPC 902.0170.PPC
Marprene TM 0-4 bar (peak) 902.P120.PPC 902.P170.PPC
Pumpsil 0-2 bar (peak) 913.A120.PPC 913.A170.PPC

621DF with 620RA (ATEX) pumphead product codes

Pump rpm Supply Product code
621DF/RA ATEX fixed speed PTC’s 79 230/400V 50Hz 3ph 0.37kW 060.8622.020 - *10:1
245 230/400V 50Hz 3ph 0.37kW 060.8652.020 - *10:1

*10:1 or 5:1 speed reduction available using VFD
*ATEX pumps 10:1 speed reduction available using VFD from geared units fitted with PTC thermistors
For alternative speeds and motor options contact Watson-Marlow Applications Engineering Department.

Pumphead Description Product code
620RA (ATEX) Two roller continuous tubing pumphead for maximum 2bar peak pressure 064.0211.A00
Tubing
Bore/wall (mm) Bioprene Marprene Platinum Silicone PureWeld XL
6.4x3.2 933.0064.032 902.0064.032 913.A064.032
9.6x3.2 933.0096.032 902.0096.032 913.A096.032 942.0096.032
12.7x3.2 933.0127.032 902.0127.032 913.A127.032 942.0127.032
15.9x3.2 933.0159.032 902.0159.032 913.A159.032
Bore/wall (mm) STA-PURE STA-PURE PFL
6.4x3.2 961.0064.032 966.0064.032
9.6x3.2 961.0096.032 966.0096.032
12.7x3.2 961.0127.032 966.0127.032
15.9x3.2 961.0159.032 966.0159.032
Loadsure Elements
Material 12mm Tri-Clamp 3/4” PVDF connectors 17mm Tri-Clamp 3/4” PVDF connectors 12mm C&G with PP 3/4” connectors 17mm C&G with PP 3/4” connectors
Bioprene TL 0-2 bar (peak) 933.0120.PFT 933.0170.PFT
Bioprene TM 0-4 bar (peak) 933.M120.PFT 933.M170.PFT
STA-PURE PCS 0-4 bar (peak) 961.0120.PFT 961.0170.PFT
Pumpsil (0-2 bar peak) 913.A120.PFT 913.A170.PFT
Marprene TL 0-2 bar (peak) 902.0120.PPC 902.0170.PPC
Marprene TM 0-4 bar (peak) 902.P120.PPC 902.P170.PPC
Pumpsil 0-2 bar (peak) 913.A120.PPC 913.A170.PPC

621DF with 620REA (ATEX) pumphead product codes

Pump rpm Supply Product code
621DF/REA ATEX fixed speed PTC’s 79 230/400V 50Hz 3ph 0.37kW 060.8622.E20 - *10:1
245 230/400V 50Hz 3ph 0.37kW 060.8652.E20 - *10:1

*10:1 or 5:1 speed reduction available using VFD
*ATEX pumps 10:1 speed reduction available using VFD from geared units fitted with PTC thermistors
For alternative speeds and motor options contact Watson-Marlow Applications Engineering Department.

Pumphead Description Product code
620REA (ATEX) Two roller LoadSure element pumphead for maximum 4bar peak pressure 064.0231.A00
Tubing
Bore/wall (mm) Bioprene Marprene Platinum Silicone PureWeld XL
6.4x3.2 933.0064.032 902.0064.032 913.A064.032
9.6x3.2 933.0096.032 902.0096.032 913.A096.032 942.0096.032
12.7x3.2 933.0127.032 902.0127.032 913.A127.032 942.0127.032
15.9x3.2 933.0159.032 902.0159.032 913.A159.032
Bore/wall (mm) STA-PURE STA-PURE PFL
6.4x3.2 961.0064.032 966.0064.032
9.6x3.2 961.0096.032 966.0096.032
12.7x3.2 961.0127.032 966.0127.032
15.9x3.2 961.0159.032 966.0159.032
Loadsure Elements
Material 12mm Tri-Clamp 3/4” PVDF connectors 17mm Tri-Clamp 3/4” PVDF connectors 12mm C&G with PP 3/4” connectors 17mm C&G with PP 3/4” connectors
Bioprene TL 0-2 bar (peak) 933.0120.PFT 933.0170.PFT
Bioprene TM 0-4 bar (peak) 933.M120.PFT 933.M170.PFT
STA-PURE PCS 0-4 bar (peak) 961.0120.PFT 961.0170.PFT
Pumpsil (0-2 bar peak) 913.A120.PFT 913.A170.PFT
Marprene TL 0-2 bar (peak) 902.0120.PPC 902.0170.PPC
Marprene TM 0-4 bar (peak) 902.P120.PPC 902.P170.PPC
Pumpsil 0-2 bar (peak) 913.A120.PPC 913.A170.PPC

621DF with 620RE4A (ATEX) pumphead product codes

Pump rpm Supply Product code
621DF/RE4A ATEX fixed speed PTC’s 79 230/400V 50Hz 3ph 0.37kW 060.8622.E40 - *10:1
245 230/400V 50Hz 3ph 0.37kW 060.8652.E40 - *10:1

*10:1 or 5:1 speed reduction available using VFD
*ATEX pumps 10:1 speed reduction available using VFD from geared units fitted with PTC thermistors
For alternative speeds and motor options contact Watson-Marlow Applications Engineering Department.

Pumphead Description Product code
620RE4A (ATEX) Four roller LoadSure element pumphead for maximum 4bar peak pressure 064.0431.A00
Tubing
Bore/wall (mm) Bioprene Marprene Platinum Silicone PureWeld XL
6.4x3.2 933.0064.032 902.0064.032 913.A064.032
9.6x3.2 933.0096.032 902.0096.032 913.A096.032 942.0096.032
12.7x3.2 933.0127.032 902.0127.032 913.A127.032 942.0127.032
15.9x3.2 933.0159.032 902.0159.032 913.A159.032
Bore/wall (mm) STA-PURE STA-PURE PFL
6.4x3.2 961.0064.032 966.0064.032
9.6x3.2 961.0096.032 966.0096.032
12.7x3.2 961.0127.032 966.0127.032
15.9x3.2 961.0159.032 966.0159.032
Loadsure Elements
Material 12mm Tri-Clamp 3/4” PVDF connectors 17mm Tri-Clamp 3/4” PVDF connectors 12mm C&G with PP 3/4” connectors 17mm C&G with PP 3/4” connectors
Bioprene TL 0-2 bar (peak) 933.0120.PFT 933.0170.PFT
Bioprene TM 0-4 bar (peak) 933.P120.PFT 933.P170.PFT
STA-PURE PCS 0-4 bar (peak) 961.0120.PFT 961.0170.PFT
Pumpsil (0-2 bar peak) 913.A120.PFT 913.A170.PFT
Marprene TL 0-2 bar (peak) 902.0120.PPC 902.0170.PPC
Marprene TM 0-4 bar (peak) 902.M120.PPC 902.M170.PPC
Pumpsil 0-2 bar (peak) 913.A120.PPC 913.A170.PPC

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