Industrial Utility Efficiency    

SPX FLOW Filters and Strainer Solutions Maximize Process Uptime

SPX FLOW, Inc. offers its Plenty brand of Backflush Filters – and its full line of Dollinger brand liquid and gas process filters and oil mist eliminators designed to maximize process uptime.

Backflush Filters

Designed specifically for water systems, Plenty Backflush Filters are available in a full range of sizes to suit most applications with a choice of stainless steel or cast iron housings. The filters easily install, are designed to minimize product loss during back flush action, and do not require any separate back wash supply.

SPX Back Flush Filter - Plenty

SPX FlOW’s Plenty Backflush Filter.

The filtration element is available in a large range of sizes with mesh or wedge wire options. Plenty Backflush Filters utilize system pressure for automatic cleaning, without interruption of the liquid flow or the need for an independent supply of clean water. 

The filters operate in normal filtration mode until a timer initiates a regular cleaning cycle or the amount of contaminate accumulated inside the strainer tubes restricts the flow passage, causing an increase in the differential pressure. When the pressure drop reaches a pre-set trigger level, an automatic cleaning mechanism is actuated, and a sliding seal plate connected to the backwash outlet effectively blanks off each strainer element in turn from the inlet water. Since pressure within the strainer body is higher than the pressure in the backwash outlet pipe it induces a flow of clean water in the reverse direction through the isolated element, effectively flushing away all accumulated debris.

Liquid and Gas Process Filters

From its Dollinger range, the highly efficient LL-142 liquid filters are engineered to remove final traces of dirt, pipe scale and other solids from process liquids. They use a radial fin element to maximize the effective filtration area, which is up to 10 times bigger than equivalent tubular type cartridge filters. This minimizes pressure drop across the filter and increases its dirt holding capacity, thereby extending service life and reducing maintenance costs.

The LL-142 filter can be customized to match specific process needs and is available with up to 200 different filtering media and a selection of construction materials to handle process and installation conditions. The filtration basket has a standard collapse pressure of 1.5 to 4 bar, with higher pressures available if required.

Dollinger GP-198 gas coalescing filters are engineered to remove entrained oil, water mist, other liquids and solid particles efficiently from gas streams and compressed air. These filters are rated at an efficiency of 99.97% on 0.3 micron.

Dollinger series GP-146 high efficiency filters are designed to remove final traces of dirt, pipe scale and other solid contaminants from process air and other gases. Unlike conventional multi-candle filters, the Dollinger element design maximizes the effective filtration area for a given vessel size resulting in lower differential pressure and extended service life.

Oil Mist Eliminators

The Dollinger Oil Mist Eliminator efficiently removes oil mists to keep equipment and its surrounding environment cleaner and easier to maintain. It captures oil droplets and particles down to 0.3 micron and prevents the formation of dangerous and slippery work areas.

SPX FLOW’s Dollinger Oil Mist Eliminator

SPX FLOW’s Dollinger Oil Mist Eliminator.

Once installed and running, it requires minimum maintenance with a filter element life of up to five years. The unit further increases economical operation by capturing escaping oil and recirculating it into the lube tank, reducing turbine and compressor oil consumption.

All SPX FLOW strainer and filtration solutions are designed for efficiency, exceptional performance, reliability and reduced total cost of ownership. They reliably protect valuable machinery and are backed by a full range of global, lifetime services. In addition to standard solutions SPX FLOW designs and manufactures complete, multi-technology skid solutions with fully integrated mechanical and electrical components.


About SPX FLOW, Inc.       

Based in Charlotte, NC, SPX FLOW, Inc. (NYSE:FLOW) innovates with customers to help feed and enhance the world by designing, delivering and servicing high value solutions at the heart of growing and sustaining our diverse communities. The company's product offering is concentrated in rotating, actuating and hydraulic technologies, as well as turnkey systems, in the food and beverage, industrial and power and energy end markets. SPX FLOW has approximately $2 billion in annual revenues with operations in more than 30 countries and sales in more than 150 countries. To learn more, visit