Tsurumi launches increased flow versions of single-phase pump line

Pumping technology provider Tsurumi has unveiled the highest-flow versions of its best-selling HS Series pumps, the HS3.75SL (manual) and HSZ3.75SL (automatic).
Dewatering Pumps / August 13, 2020
By Liam McLoughlin
Tsurumi’s newest pumps, the HS3.75SL (left) and HSZ3.75SL (right)
Tsurumi’s newest pumps, the HS3.75SL (left) and HSZ3.75SL (right)

The new, submersible models are designed to handle high volume drainage at low head, and pump roughly twice as much water as the high head model HS3.75S. US-based Tsurumi says this means customers will be able to save time and money in dewatering applications.

“Our new HS3.75SL and HSZ3.75SL models are ideal for applications where customers need to dewater faster so they can get onto the job site quicker, such as construction and utility jobs, and in disaster remediation, when time is crucial,” said Glenn Wieczorek, managing director of Tsurumi America. “These trash pumps handle debris, sand and solids that come in flooding water with minimum wear and clogging, which makes them a great support in such events.”

The new pumps offer a maximum flow rate of 140 GPM and maximum total dynamic head of 40 ft, with a motor input of just 0.75 kW. The pumps are compact, lightweight and easy to transport. Tsurumi says the pumps are low maintenance because their wear parts are built from highly durable materials. The shaft incorporates Tsurumi's original agitator to prevent air lock, as occasionally seen in vortex pumps and semi-vortex pumps, and to stir slurry efficiently.

The difference between the two models is that the HSZ3.75SL contains a simple float switch-equipped automatic sensor to prevent dry-running operation and to reduce power consumption. It automatically stops running when not needed, which makes it appropriate for night-time operations and construction works in dense residential areas.

“At Tsurumi we are always looking for ways to offer the best solutions to meet our customers’ needs," said Wieczorek. "The HS3.75SL and HSZ3.75SL pumps were designed with that in mind.

“And, of course, they have Tsurumi’s high standards of quality and reliability. You can’t find anything similar in terms of performance and design out in the marketplace.”

Tsurumi's original technologies are included in the pumps, such as an anti-wicking cable, dual internal mechanical seals with silicon carbide facing and an Oil Lifter, developed through years of research and applications in the field.

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