Multiple-diaphragm P-Series Hydra-Cell Metering Pumps Minimize Pulsations for Even Flow

Multiple-diaphragm P-Series Hydra-Cell Metering Pumps Minimize Pulsations for Even Flow
P-Series Hydra-Cell pumps from Wanner Engineering

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P-Series Hydra-Cell metering solutions pumps from Wanner Engineering are available with Aflas diaphragms as well as brass manifolds. Aflas is a copolymer elastomer that resists heat, acids and alkalis. Other diaphragm material choices include EPDM, FKM, PTFE, Neoprene and Bruna-N.

Brass provides a lower-cost alternative to stainless steel and Hastelloy when the higher discharge pressure of a metallic pump head is required. Other manifold choices include cast iron, stainless steel, Hastelloy C, PVDF and polypropylene.

“We created the metering pump from our Hydra-Cell line by adding different ratio gearboxes,” says Donelle Capriotti, director of business development, Wanner Engineering. “Many of the features and benefits are the same across the two lines except for the increased accuracy of the metering pumps.”

The metering line includes six models with maximum flows of 26.5 to 894.6 gph and maximum pressure ratings from 1,000 to 2,500 psi.

Five of the six models feature a multiple-diaphragm design that minimizes pulsations, producing smooth, linear flow, and eliminating the need for pulsation dampeners. A replenishment valve in every piston assembly ensures actuating oil on every stroke for continuous accuracy.

“Instead of slugs of chemicals being injected into the process, you have a stream, like what comes out of your water faucet,” Capriotti says. “You don’t get pipe strain like you do with traditional metering pumps. You have reduced acceleration losses on the suction side of the pump. You have a much safer pump because you don’t have the pipe stress, which could spill chemicals from the pipe coming apart.”

The seal-less design ensures against leaks, wear and replacement. Spring-loaded, horizontal disk valves and seal-less design enable the pumps to handle viscous fluids and abrasive particles up to 800 microns in size (depending on model). Pumps can also run dry without damage.

“Because we use the Hydra-Cell pump and just change the gear reducer, we can use the same pump for different applications that might be pumping from 0.5 gph up to 80 gph,” Capriotti says. “Even though it would have a different gearbox on the back, the liquid front end would be the same, enabling you to share parts kits because of the homogenization of the liquid end.” 800/369-4172; www.hydra-cell.com.



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