Watson-Marlow MasoSine MR Series

Questions and Answers

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dwhiteAug 12, 2025
What to do if Watson-Marlow Water Pump leaks?
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  Logan GrantAug 12, 2025
  If your Watson-Marlow Water Pump is leaking, the issue might stem from several causes. Start by performing a visual inspection for pinched, cut, or missing O-rings and replace them if necessary. Also, check for damage to the lip seals or seal housing, which may require rebuilding or replacing the assembly. For abrasive applications or high discharge pressure, inspect the shaft sleeve for grooves and consider addressing discharge pressure problems or applying a hard coating to the shaft sleeve.
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Brian BrownAug 19, 2025
How to fix inadequate flow in Watson-Marlow MasoSine MR Water Pump?
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  Gina MorganAug 19, 2025
  If your Watson-Marlow Water Pump has inadequate flow, begin by checking the shaft rotation to ensure it is correct. Also, inspect the Scrapergate installation and consider changing the Scrapergate and Guide. Finally, check for air leaks, both external and internal, that may arise from loose fittings or worn lip seals. Try tightening fittings like Tri Clamps. If the issue persists, replace any worn lip seals or o-rings.
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esmithAug 27, 2025
Why is my Watson-Marlow MasoSine MR losing performance?
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  Tanner WilliamsAug 27, 2025
  If you observe a loss of performance in your Watson-Marlow Water Pump, check the Scrapergate for wear and replace it if necessary. If the Scrapergate support of the seal housing is worn where the Scrapergate shuttles, rotate it to a clean spot. Also, inspect the liners for wear and replace them if they are worn.
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Michele GuzmanSep 3, 2025
What causes accelerated wear in Watson-Marlow Water Pump?
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  Charles TaylorSep 3, 2025
  If your Watson-Marlow Water Pump is experiencing accelerated wear, several factors could be responsible. It could be due to speed or abrasion; try decreasing the pump speed or using a larger pump. Excessive discharge pressure (above 150 PSIG) can also cause this; increase the line size, check the valves, and check viscosity and line losses. Another cause may be a dry run; consider recommending level control or changing the internals.

Watson-Marlow MasoSine MR Series Specifications

General

Series	MR Series
Pump Type	Sine pump (eccentric disc pump)
Pressure	Up to 15 bar (depending on model)
Materials of Construction	316L stainless steel
Drive Type	Electric motor with gearbox
Hygienic Design	EHEDG
Shear Sensitivity	Low shear
Port Connections	DIN, SMS
Certifications	EHEDG, 3A