When Samson Pumps started making liquid ring pumps, they were intended for a broad range of uses. But after years of working in industries including gas and oil, they honed in on the features they saw as the most sought after to create the Truck Master 3400 Series.

“After focusing our efforts and priorities on the mobile vacuum truck segment, we learned that we had a very good match with the requirements from manufacturers,” says Keld Jorgensen, chief marketing officer for Samson Pumps.

The 3400 Series of liquid ring pumps is now used for various applications, including hydroexcavation, sewer and septic system maintenance, industrial cleaning, spill response and environmental cleanup and construction site cleanup.

“The core of the pumps is the rotor,” Jorgensen says.  “After several years of researching and testing different methods to improve the rotor, we finally found a geometrical design to increase performance.”

Samson used a combination of welding and casting in the rotor construction to achieve strength while reducing the overall weight. To increase the performance and sturdiness of the Truck Master series, Samson created the Optimum HPR (high performance rotor).

Samson focused on flexibility as well when designing the Truck Master 3400 series. “It’s important for us to accommodate the vacuum truck builders’ need for a versatile vacuum system design when configuring their vacuum trucks,” Jorgensen says.

Sustainability has also been valued in the design process. Samson works to choose high-grade materials that extend the life of the pumps and after the end of life most component materials can be recycled. The rotor and mechanical shaft are made from stainless steel and the pump and bearing housing are made from cast iron. The flow plate is constructed from a combination of cast iron and bronze. All together, the pump measures just under 23 inches tall by 48.6 inches long and weighs roughly 1,170 pounds. It can produce 2,010 cfm at 1,400 rpm and generate a 27.1 Hg in vacuum.

“This will give an air speed around 115 fps in a 6-inch suction hose at which speed solid debris such as stone and bricks will fly,” Jorgensen says. “Reducing the rpm to 1,100 rpm and using a 4-inch suction hose will give an air speed of 260 fps and 780 cfm.”

Jorgensen says operators comment on the powerful suction, low maintenance, clean exhaust and compact design. “They experience getting the job done when onsite and have confidence due to the reliability of their equipment.” 507-442-6608; www.samson-pumps.com