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Masterflex L/S Easy-Load II Head w/ Adj Occlusion for Precision Tubing

HV-77201-60
$352.00 USD/EACH

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  • 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).
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.
What's Included:
single-channel mounting hardware and a 15" (38-cm) length of silicone pump tubing.
mL/rev Depends on tubing selected.
Accepted tubing L/S® 13, L/S 14, L/S 16, L/S 25, L/S 17, L/S 18
Rotor material Stainless steel
Housing material Polyphenylene sulfide
Pressure Chart Click to View
Rollers Four; stainless steel
Occlusion Adjustable
Flow Chart Click to View
Dimensions 5"W x 4-3/4"H x 2-3/4"D
(12.7 x 12.1 x 7.0 cm)
Product Type Pump Head
Brand Masterflex
Manufacturer number 77201-60

Accessories
Qty/Price
Availability

at $35.80 USD/SET of 1

In stock.

at $46.00 USD/SET of 1

In stock.

at $50.50 USD/SET of 1

In stock.
Upgraded Model
Qty/Price
Availability

at $379.00 USD/EACH
In stock.
Replacement parts
Qty/Price
Availability

at $23.50 USD/SET of 1
In stock.




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Questions and Answers

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

3 Questions | 3 Answers
Displaying questions 1-3
  • Q:

    Can this generate a constant flow with 16 tubing at volume flow rate of 6.4 mL/min ?
    Asked on 5/8/2014 by bob from Tokyo, Japan

    1 answer

    • STAFF EXPERT

      A:

      This pump head with the L/S 16 size tubing will provide a max flowrate of 80 mL/min with a pump drive capable of a maximum of 100 RPM and a max flowrate of 480 mL/min with a pump drive capable of a maximum of 600 RPM. This is based on the fluid being pumped being water. Depending on the fluid being pumped there may be some variations. Also please note that although the flow will be continuous it will be a pulsed flow as this is the nature of any peristaltic pump.

      Answered on 5/9/2014 by Jose from Technical Support
  • Q:

    WHAT IS THE HTS CLASS FOR THIS ITEM?
    THANKS,
    Asked on 11/27/2012 by oscar from midlothain, texas

    1 answer

    • STAFF EXPERT

      A:

      The harmonization number is 8413.91.9520, the ECCN number is EAR99.

      Answered on 11/28/2012 by Jen from Technical Support
  • Q:

    Can this take L/S 24 tubing? It does not list that specifically.
    Asked on 4/13/2011 by Anonymous

    1 answer

    • Staff Reviewer

      A:

      This will not accept the L/S 24 size tubing, please see part number 77200-62 for the version of this head that will.

      Answered on 4/14/2011 by Jen from Technical Support
Displaying questions 1-3

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Product Reviews

REVIEW SNAPSHOT®

by PowerReviews
Masterflex<reg> L/S<reg> Easy-Load<reg> II pump head for precision tubing, adjustable occlusion, SS rotor.
 
5.0

(based on 2 reviews)

Reviewed by 2 customers

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5.0

A bit 'pricey' but worth it!

By MB

from Waukegan, IL

About Me Academic/Professional Researcher

Verified Buyer

Pros

  • Accurate
  • Durable
  • Easy To Use
  • Well Calibrated
  • Works Properly

Cons

    Best Uses

    • In The Lab
    • Research

    Comments about Masterflex<reg> L/S<reg> Easy-Load<reg> II pump head for precision tubing, adjustable occlusion, SS rotor.:

    We use this product in our R&D lab almost every day. We purchased it for a specific test where we required extreme accuracy over a wide flow rate range with minimal pressure fluctuation for a highly sensitive fluid. We found it to function so well that we replaced almost all the pumps in the lab with the Masterflex system.

     
    5.0

    Great Pump Head

    By Jeff

    from Fort Smith, AR

    Verified Buyer

    Pros

    • Good Value
    • High Quality
    • Reliable

    Cons

      Best Uses

      • pumping viatmin soluition

      Comments about Masterflex<reg> L/S<reg> Easy-Load<reg> II pump head for precision tubing, adjustable occlusion, SS rotor.:

      This pump head is the best of the easy load series. It doesn't chew up the tubing like the others. It also has enough force to pump against gravity, even with a very viscous substance. [...] It was a wild guess on my part to pick the Easy-Load 2 w/ adjustable occulusion. [...]

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