Masterflex L/S Easy-Load® II Head for Precision Tubing, PPS/SS

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Masterflex Item # WZ-77200-60
Automatic retention holds tubing securely in place with no manual adjustment—just load the tubing and start the pump
  • Four-roller rotor improves pressure performance and mechanical stability while reducing pulsation.
  • Improved occlusion bed geometry lengthens tubing life.
  • Polyphenylene sulfide (PPS) housing with either stainless steel (SS) or cold-rolled steel (CRS) rotor—choose CRS for economy or SS for greater durability and chemical resistance.
  • Model 77201-60 with adjustable occlusion gives you the option of loosening occlusion for longer tubing life or increasing occlusion for higher pressure.
  • Each pump head for precision pump tubing accepts tubing sizes L/S® 13, L/S® 14, L/S® 16, L/S® 25, L/S® 17, and L/S® 18. Achieve flow rates of 0.06 to 2300 mL/min (1 to 600 rpm).

PRODUCT OPTIONS

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SPECS & DESCRIPTION

Specifications & Description

  • Pump SeriesL/S
  • Number of Channels1
  • Max Flow Rate (mL/min)2300
  • Min Flow Rate (mL/min)0.0012
  • Max Flow Rate Per Channel (mL/min)2300
  • Min Flow Rate Per Channel (mL/min)0.0012
  • Housing MaterialPolyphenylene Sulfide (PPS)
  • Tubing RetentionAutomatic
  • OcclusionFixed
  • Optimum RPM Range (rpm)0.02 to 600
  • RollersFour; stainless steel
  • Rotor MaterialStainless Steel
  • Suction Lift (ft)29
  • Suction Lift (m)8.8
  • Gear Ratio1:1
  • Tubing sizes acceptedL/S® 13, L/S 14, L/S 16, L/S 25, L/S 17, L/S 18
  • Volume Per Revolution With L/S 13 Tubing (mL)0.06
  • Volume Per Revolution With L/S 14 Tubing (mL)0.21
  • Volume Per Revolution With L/S 16 Tubing (mL)0.8
  • Volume Per Revolution With L/S 25 Tubing (mL)1.7
  • Volume Per Revolution With L/S 17 Tubing (mL)2.8
  • Volume Per Revolution With L/S 18 Tubing (mL)3.8
  • Length (in)3.25
  • Width (in)5
  • Height (in)4.75
  • Length (mm)82
  • Width (mm)127
  • Height (mm)121
  • Open-Head SensorNo
  • DescriptionL/S Easy-Load II Head for Precision Tubing, PPS/SS
Two year warranty

Includes

single-channel mounting hardware and a 15" (38-cm) length of silicone pump tubing.

Key Features

  • Four-roller rotor improves pressure performance and mechanical stability while reducing pulsation.
  • Improved occlusion bed geometry lengthens tubing life.
  • Polyphenylene sulfide (PPS) housing with either stainless steel (SS) or cold-rolled steel (CRS) rotor—choose CRS for economy or SS for greater durability and chemical resistance.
  • Model 77201-60 with adjustable occlusion gives you the option of loosening occlusion for longer tubing life or increasing occlusion for higher pressure.
  • Each pump head for precision pump tubing accepts tubing sizes L/S® 13, L/S® 14, L/S® 16, L/S® 25, L/S® 17, and L/S® 18. Achieve flow rates of 0.06 to 2300 mL/min (1 to 600 rpm).

More About this Item

For stacking multiple heads (up to the specified limits of your drive) order two- three- or four-channel hardware separately under "Accessories". When two Easy-Load II pump heads are stacked rollers are offset by 45°--combine the outlets from two stacked heads for a 95% reduction in flow pulsation.

PART OF A COMPLETE SYSTEM – GET EVERYTHING YOU NEED
The convenient modular design of Masterflex Pump Systems (Pump Head + Tubing + Drive) makes Masterflex extremely versatile and cost-effective.

ACCESSORIES

REVIEWS

Q&A

Do you have questions about this product?

Get answers from real customers and in-house experts with AnswerBox.

17 Questions | 18 Answers
Displaying questions 1-10Previous | Next »
  • Q:

    Does the Masterflex L/S Easly-Load fit on a Thermo Scientific Drive? (Or is this a replacement for Thermo Scientific pump model 955-0000?)

    I have a working 956-0000 and need a pump that will work with smaller tubing (L/S 13 and or L/S14) - what do you recomment
    Asked on 7/6/2016 by Herb from St. Paul, MN

    1 answer

    • STAFF EXPERT

      A:

      Yes that will fit on the 955-0000 as it is our 77200-60.

      Answered on 8/22/2016 by Ethan from Technical Support
  • Q:

    I have a Masterflex 77200-60. I am unable to prime it.
    Please give me the step by step instructions.

    Thank you
    Asked on 6/30/2016 by CJM from CT

    1 answer

    • STAFF EXPERT

      A:

      Please contact our Applications Department directly to do troubleshooting.

      Answered on 8/17/2016 by Dan C from Technical Support
  • Q:

    hi, i have the masterflix pumb model 77200-60
    Is there a possibility to lock the screens this pump
    If so, what can be done?
    thks
    Asked on 6/7/2016 by inad from israel

    1 answer

    • STAFF EXPERT

      A:

      This is the part number for the pump head only, not the drive. Therefore, there is no lock screen information since this is the pump head portion of the system.

      Answered on 6/7/2016 by Danielle from Technical Support
  • Q:

    I need extra mounting screws for the easy-load II model 77200-60. The screws are approximately 3" long, diameter 1/8" and I think 32 TPI thread count. Do you have them in stock?

    Thanks
    Asked on 4/21/2016 by Steve from norristown, pa

    1 answer

    • STAFF EXPERT

      A:

      The mounting screws for mounting one Easy-Load II pump head is 77200-01.

      Answered on 4/21/2016 by Katie from Technical Support
  • Q:

    What is the continuous pressure and intermittent pressure for the Easy Load II Model 77200-60 being run on a Masterflex L/S Model 7528-10? Is there a technical document or specification that would provide the maximum pressure that this system could deliver.
    Asked on 3/8/2016 by Dr Dave from Cincinnati OH

    1 answer

    • STAFF EXPERT

      A:

      The pressure capabilities you will be determined by the pressure limitations of the tubing. Please refer to the following:

      L/S Tubing Continuous Intermittent
      L/S® 13 25 psig 40 psig
      L/S® 14 25 psig 40 psig
      L/S® 16 25 psig 40 psig
      L/S® 25 20 psig 35 psig
      L/S® 17 15 psig 20 psig
      L/S® 18 10 psig 15 psig
      L/S® 15 25 psig 40 psig
      L/S® 24 25 psig 40 psig
      L/S® 35 20 psig 35 psig
      L/S® 36 15 psig 20 psig

      Answered on 3/22/2016 by Jose from Technical Support
  • Q:

    Hi, I have a Masterflex P/S Easy load II pump assy p/n 955-0000. I am looking for a direct replacement, would that be the 77200-60 ? and would the correct roller assy p/n be 77200-68? Thanks
    Asked on 9/19/2014 by Bob from Avoon, CT

    1 answer

    • STAFF EXPERT

      A:

      That is correct. The 955-0000 is the 77200-60 and the replacement roller assembly is item 77200-68.

      Answered on 9/19/2014 by Jay from Technical Support
  • Q:

    How do I reverse direction with Easy Load II L/S Pump 77200-60?
    Asked on 7/30/2014 by Kathy from Wallingford, Ct

    1 answer

    • STAFF EXPERT

      A:

      Rotational direction is a function of the pump drive or motor. The pump head can spin in either direction.

      Answered on 7/31/2014 by Jay from Technical Support
  • Q:

    What is the corresponding ID and OD for (13, 14, 16, 25, 17 and 18) as tubing sizes for 77200-6o pump model?
    Asked on 12/20/2013 by Dalia

    1 answer

    • STAFF EXPERT

      A:

      The outer diameters for the Masterflex line if tubing is proprietary. The inner diameters as well as additional specification information can be found on the product's detail page which can be found by typing the item number of the tubing into the website's search box and clicking on the red "Search" button.

      Answered on 12/20/2013 by Polo from Technical Support
  • Q:

    How many rollers?
    Asked on 3/29/2012 by Aaron from Cole-Parmer

    1 answer

    • STAFF EXPERT

      A:

      Four stainless steel rollers.

      Answered on 3/30/2012 by Rita from Customer Service
  • Q:

    How many rollers does this pumphead have?
    Asked on 3/29/2011 by Aaron from Vernon Hills, IL

    1 answer

    • STAFF EXPERT

      A:

      This pump head has four rollers.

      Answered on 3/29/2011 by Jaime from Technical Support
Displaying questions 1-10Previous | Next »

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