Peter Snow, training manager for Godwin Pumps, discusses the current trends in pumps, customer needs and more.
RER: What are some common pump applications and how have these changed over the years?
Snow: Construction site dewatering and small sewer bypass applications are still a mainstay of portable pump rentals. However in recent years, portable pump reliability and capability have helped increase the confidence in municipalities to attempt much larger gravity sewer line, force main, and even waste treatment plant bypasses. As a result, applications are larger and more complex; there's a bigger investment in related equipment and accessories (i.e. control panels, hose, pipe, valves, etc.). There's also a need for more design expertise.
How can a rental company ensure that a customer gets the right pump for the job?
There is no substitute for good information concerning a portable pumping application. Talking with the customer, gathering any historical flow data, and walking the jobsite to determine detailed, accurate information about flow, lift and distance is imperative. Armed with this information, a trained pump sales engineer can size the proper pump(s) and piping for a successful job.
What are a few of the most important basic pump operating tips?
Pump systems remain a mystery to many contractors, in regard to both sizing and operating. Obtaining the assistance of a qualified pump sales/rental engineer is the best option for a customer to ensure proper sizing and operation of a portable pump system.
Discuss some of the current trends in pumps.
Portable pumps continue to grow in size and head capabilities. With increased flow and head, portable pumps are now being used in a wider variety of applications in industry. Customers are benefiting from more efficient temporary pumping systems, because the newer model pumps offer the possibility of doing more with less equipment, and that means less maintenance costs, too.
What are customers asking for and what do you see in the future for pumps?
Customers want two things: reliable equipment and knowledgeable customer service and support. As portable pumps become larger and more powerful, the available options increase. Knowing the right option is extremely important and getting assistance from a trained portable pumping specialist is the key to success. The larger customers who've had the experience with pumping systems are beginning to see the value in building a partnership with a supplier and working hand-in-hand with them to meet needs.
How are pump manufacturers designing their products for the rental industry in particular?
Bottom line: Rental equipment needs to be reliable, rugged and simple to operate.
The new pump model PA6C60-4045T-ESP from Gorman-Rupp offers high performance, sound attenuation and an environmental containment base. It has flow rates of up to 2,850 gpm, heads up to 200 feet and can handle 3-inch solids. The pump has the ability to run dry indefinitely with no damage. The environmental base contains all fuel and engine liquids that could otherwise leak directly onto the ground during an accident. This model is designed for sewer by-pass pumping or applications that require sound attenuation.
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Godwin Sub-Prime electric submersible pumps are available from ½ to 90 hp with flows to 5,000 gpm, heads to 375 feet, and solids handling to 3.2 inches in diameter. New models include the GSP40SL and GSP60SL SlimLine pumps. Designed for well casing dewatering applications, the new 4- and 6-hp electric submersible pumps are available in both high volume and high head models. With a maximum diameter of 7.25 inches, the units are designed to fit into confined spaces.
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Stow's self-priming diaphragm pumps are designed to handle all contractor needs from clear water to heavy sludges and slurries. The SDP-2 and SDP-3 (pictured) can clean out cesspools and septic tanks, drain slow seepage from small excavations, trenches and construction sites, and pump industrial waste. The SDP-2 has a maximum capacity of 3,000 gph while the SDP-3 pumps up to 5,100 gph. Honda's 4-hp GX-120 gasoline engines drive the pumps and each features a heavy-duty aluminum body, lubricated spur gear, automatic oil shutdown, machine-steel pipe nipples, and strainers that come standard.
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Power Prime Pumps
The DV 150i 6-inch pump from Power Prime Pumps is specifically designed to reduce operator maintenance costs for bypass and dewatering projects. With superior fuel efficiency, this pump is able to move more gallons of water at a lower cost. The high efficiency impeller offers improved solids handling and greater suction lift capabilities. The DV 150i can handle solids up to 3 inches, flows up to 2,600 gpm, and head up to 195 feet. Mounted on galvanized trailers to protect against rust and corrosion, this equipment has a maintenance-free surface.
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The Ready 8S trash pump from ITT Flygt is designed for pumping sand and debris-laden water with minimal wear and clogging. The portable 1.1-hp pump weighs 33 pounds and can handle solids up to 1.5 inches in size. The unit reaches 36 feet of head and pumps up to 110 gpm. The Ready 8S is constructed of stainless steel and synthetic materials, making it resistant to wear and corrosion. With built-in overload protection, the unit is powered by single-phase 115- or 230-volt power.
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Wacker's line of centrifugal trash pumps includes 2-, 3-, 4- and 6-inch models. The 2-inch PT 2 series models are versatile lightweight pumps that can pump up to 210 gpm with solids up to 1 inch. The PT 2 weighs 96 pounds and is powered by a 6-hp WM Wacker engine. The PT 2A also weighs 96 pounds and is equipped with a 5.5-hp Honda engine. The PT 2H has a 4.6-hp Hatz diesel engine and weighs in at 131 pounds. The PT 3 series pumps are also available in gasoline and diesel models and are capable of handling up to 400 gpm with solid sizes up to 1.5 inches.
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Designed for the rental market, the Thompson Pump model 6HT-DDST-3-2011 is capable of handling demanding applications. The pump is a 6-inch multipurpose, heavy-duty trash pump and has a high maximum volume capacity of 1,500 gpm, and maximum suction lifts of 102 feet of head. It is equipped with two cast iron rubber-lined wear plates that provide extra protection against solids and abrasives entering the pump; a dry-running, abrasion-resistant tungsten carbide mechanical seal with viton elastomers and a non-clogging, two-vane impeller capable of passing 3-inch spherical solids. A 3-cylinder Deutz engine powers the pump and comes with a full control panel and safety shutdowns for high temperature and low oil pressure. The pump and engine are set on an integral fuel tank frame, which provides 33 hours of unattended pumping time.
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Rain for Rent
Rain for Rent's new bypass pumps feature galvanized steel for protection against rust and corrosion. The new DV 350c 14-inch (pictured) and DV 150 6-inch vacuum prime pumps have galvanized skids as well as new construction water filtration equipment. The DV 350c pumps a maximum of 13,500 gpm with a maximum head of 180 feet. The DV 150 pumps a maximum of 2,250 gpm with a maximum head of 160 feet.
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