Renewable Units for Water Fixtures
WaterSaver faucets. However, for purified water applications, the brass components of the unit are coated with a layer of pure tin. To order such units or components, add the suffix “TL” to the part number. 7. Check Valve. WaterSaver offers renewable units with an internal check valve. The purpose of the check valve is to prevent backflow of water upstream of the valve. This can be used to prevent cross-mixing of hot and cold water when the faucet is opened for a long period of time and the outlet may be closed. This can occur on units such as pre-rinse units where there is a self-closing valve downstream of the faucet valves. All WaterSaver pre-rinse units are furnished with renewable units with internal check valves. To order a renewable unit with an internal check valve, add the suffix “CV” to the part number. 8. Ceramic Disc Units. The original WaterSaver renewable unit is based on a compression valve design. The valve operates by means of a rubber disc that is compressed against a valve seat. When the handle is turned to open the faucet, the disc moves up off the seat, thus opening the waterway. When the handle is turned to close the valve, the disc is moved down to recompress against the valve seat. As an alternative to this type of construction, WaterSaver offers units that utilize rotating ceramic discs to control the water flow. The unit has two flat ceramic discs, each of which has a hole or port in it. When the handle is turned, the upper disc rotates, allowing the orifice in the upper disc to align with the orifice in the lower disc and opening the waterway. Units with rotating ceramic discs are dimensionally the same as, and thus interchangeable with, the standard WaterSaver compression renewable unit.
4. 120 Degree vs. 90 Degree Rotation. Typical WaterSaver renewable units rotate approximately 120 degrees from the closed to open position. However, when a faucet is furnished with wrist blade or lever handles, it is advantageous for the handle to go from closed to open in a 90 degree rotation. This more limited rotation prevents the handles from hitting the counter or a backsplash behind the faucet. WaterSaver therefore offers the BNV200-90 series renewable units for use in faucets with wrist blade or lever handles. 5. Adjustable Volume Control. The original WaterSaver renewable unit incorporated an adjustable volume control device. This device consists of a small round cap or thimble held in place by a set screw. By loosening the set screw and rotating the thimble, the user can adjust the size of the inlet port through which the water passes as it enters the valve. By opening or closing the port, the user can compensate for high water pressure or conserve water. Effective in 1985, the adjustable volume control device was changed from a standard to an optional feature of our products. Renewable units with the suffix “AC” include the adjustable volume control feature. 6. Tin-Lined Units. Faucets and valves for distilled, deionized and purified water must be manufactured using inert materials that are in contact with the water. These inert materials protect the purity of the water, as well as prevent the purified water from corroding the faucet or valve itself. WaterSaver manufactures faucets and valves for purified water in tin-lined brass, PVC, polypropylene, polypropylene- lined brass, PVDF-lined brass and stainless steel. This wide selection of materials permits the use of products that meet the requirements of the particular application. Faucets and valves that are tin-lined brass use the same renewable unit as all
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WaterSaver Faucet 701 W Erie St Chicago, IL 60654
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