CHICAGO -- Everpure has expanded its line of water purification equipment with the addition of a chloramine-reducing filter cartridge for foodservice beverage preparation, a large Claris filter that extends protection against mineral deposition in foodservice equipment to steam and combination ovens and a high-output commercial reverse-osmosis apparatus for entire kitchens or stores.
The company noted that municipal authorities increasingly are using chloramine as a disinfectant for water supplies. Chloramine is a combination of traditional chlorine with a small quantity of ammonia. Everpure reports that unlike chlorine, chloramine is very stable in water and thus more difficult to remove. Presently in use by a third of U.S. municipalities, the compound is finding favor because it can disinfect water along the full length of a main.
Moreover, chlorine is an active element that readily combines with organic molecules in water to form compounds that may be carcinogenic. The Environmental Protection Agency now requires municipalities to ensure that the concentration of these compounds does not exceed 80 parts per billion. Everpure notes that chloramine is less reactive than pure chlorine, and so has proven valuable in meeting this goal.
However useful chloramine may be in disinfecting water, it has an adverse effect on taste and odor, and it can damage gaskets and O-rings in appliances. Everpure has developed a filter cartridge, 7CLM, that increases the water's time of contact with a special carbon adsorption element.
The 7CLM is NSF-certified to reduce chloramines. It also filters out particles as small as half a micron in size, including Giardia and Cryptosporidium cysts. For these reasons, Everpure said, it is a good choice for fountain, frozen carbonated beverage and drinking water dispensers. Used in conjunction with a demineralizing device like Everpure's SR-X scale-inhibition system, the filter provides additional protection for regular and espresso coffee brewers, icemakers and appliances that use steam. The 7CLM cartridge protects drink system seals, pumps, tubing and small orifices from chemical degradation, clogging, corrosion and abrasive wear.
The 7CLM cartridge can be paired with new or existing Everpure heads. It is scheduled to start shipping in April 2011. It is reported to be certified against NSF Standard 42 (taste and odor, Particulate Class I and Standard 53 health effects).
Also new is the ComPro reverse osmosis system, offered in three configurations designated by gallonage output: ComPro-675, -1350, and -2025. As the names specify, these can deliver anywhere from 675 to 2,025 gallons of pure water per day.
The ComPro system's high output makes it suitable for "whole kitchen" applications, with one unit providing clean water for multiple applications, including hot and cold beverage equipment and steam appliances.
The ComPro uses a novel method for flushing the semipermeable membrane. Upon system shutdown, up to three gallons of pure water drive the concentrate out of the RO membrane housings. Everpure reports that this helps to remove materials that could clog the membranes, and bathes them in pure RO permeate during inactivity -- avoiding discharge of water with high TDS content into the storage tank upon restart. This extends membrane life, improves performance and increases consistency of output quality. Because the flush takes place at normal system shutdown -- when the floor tank has reached capacity -- it doesn't disrupt equipment operation.
The system produces up to 2,025 gallons of pure water a day with a permeate rate of up to 1.4 gallons per minute. Paired with a floor tank (sold separately), it provides enough daily output to keep up with most foodservice operations, Everpure noted.
And it does not require salt. According to the manufacturer, ComPro does not use sodium for ion exchange, so there is no need for salt replenishment -- a task often overlooked by staff. It also avoids adding sodium to the ecosystem, which is being restricted in some areas of the U.S.
The ComPro system is engineered to remove 98% of total dissolved solids, with 25% to 75% efficiency, depending on the input's dissolved solids and temperature. Able to handle water with TDS of up to 2,000 parts per million, Everpure explained, the system is well-suited to problem water areas, removing "hardness" as well as iron, lead, chromium 6, heavy metals, chloride, nitrate and sulfate. It includes a 5-micron particle prefilter.
Designed for commercial and industrial applications, Everpure's new ComPro features a centrifugal pump which is said to have a service life eight to 12 times longer than that of conventional rotary-vane pumps. A low inlet pressure shutoff protects the pump from damage.
The ComPro's small footprint permits it to be floor or wall mounted. Everpure reports that it is simple to install, start up and maintain. The system can be upgraded from lower to higher capacity if water needs increase. It features a Pentair controller, as well as a 30/50 psi permeate pressure switch, two LED status indicators and an LCD status readout (off, run, tank full, replace fuse and low pressure shutoff). It is available now.
Everpure's third new product is the Claris XX-Large filter cartridge, designed to extend customized scale prevention capabilities beyond hot beverage applications to include boiler and direct-injection steam and combination ovens, as well as iced tea brewing equipment.
The manufacturer notes that untreated "hard" water can damage equipment by depositing minerals ("lime scale") on the interior surfaces of tubing, tanks and heaters. This buildup retards flow and decreases heat transmission, requiring costly service. While some filters control this deposition by adding an inhibitor that keeps the minerals in solution, the new Claris incorporates an ion exchange resin that selectively targets carbonates, nearly eliminating scale formation. It also blends a small amount of filtered water with the demineralized effluent, "buffering" the output to avoid excessively low pH -- high acidity -- that can degrade beverage flavor. The operator can tailor the mineral content to the desired water recipe, thus duplicating an important feature of a reverse osmosis system in a low-maintenance quick-change cartridge device.
The Claris XXL also offers a five-stage filtration process, including prefiltering, fine filtration, a solid membrane filter removing particles as small as five microns, and an efficient carbon block that absorbs chemical contaminants, including those that impart undesirable taste and odor. And it adds nothing to the water.
Certified to NSF/ANSI Standard 42, the Claris XXL fits the same automatic-shutoff/pressure release filter head as other Claris cartridges. The head, with an integral flush valve, features a flat connector for easy cartridge changes in tight spaces. Claris cartridges now include small, medium, large and XL, as well as the new XXL.