Reduced Pressure Backflow preventerTest Procedure

3/4" Watts LF909-QT-HW Reduced Pressure Zone Assembly. Currently the only device approved for hot water operation. Lead free, bronze body feature three covers. Known as the "Cadillac" of backflow preventers, the 909 is constructed of high quality parts for reliabilty and ease of service. Features full port, quarter turn ball valves on inlet and outlet. The hot water device has stainless steel check seats instead of the standard plastic found in the regular 909. Fully testable.Air gap drian fitting listed below is recommended. Designed to pipe a drain onto the relief valve port to avoid water damage due to relief valve discharge.

Calcium and magnesium are removed from the water as it passes through the resins inside the tall tank. (Resin life is generally 7-10 years.) The volume limit of calcium and magnesium that the resin is able to effectively remove is determined by your specific hardness level. (We’ll test your water.) We pre-program your hardness level into the filter head. This unit comes with a microprocessor head, which counts litres used, and will automatically backwash itself at 2 am on the following morning after the day on which the resin’s limit has been reached. The backwash is achieved by the system drawing a salt brine solution from the squat storage tank and pumping it through the resins, shocking the resins into releasing the calcium and magnesium, and disposing of this out through a waste pipe. The filter head then goes into a rinse cycle, removing the salt bring from the resin tank and then automatically switches itself back into normal working mode. The only regular consumable item in this process is softener salt, which must be periodically added to the tank storage tank.

Water softeners are the only guaranteed, effective way of removing calcium and magnesium from water. For general household use, we prefer to sell a light commercial twin tank unit as pictured here. The larger capacity of these units, in comparison with the single tank unit, is far more economical on salt consumption, due to less frequent backwash cycles.

Reduced pressure backflow preventervs Double check valve

3/4" Watts LF909-QT-HW Reduced Pressure Zone Assembly. Currently the only device approved for hot water operation. Lead free, bronze body feature three covers. Known as the "Cadillac" of backflow preventers, the 909 is constructed of high quality parts for reliabilty and ease of service. Features full port, quarter turn ball valves on inlet and outlet. The hot water device has stainless steel check seats instead of the standard plastic found in the regular 909. Fully testable.Air gap drian fitting listed below is recommended. Designed to pipe a drain onto the relief valve port to avoid water damage due to relief valve discharge.

Air Gap Drain Fitting The air gap drain fitting is designed to attach to the relief port and pipe to a drain to direct any discharge to a safe place. Bottom features a 1/2" Female NPT Connection.

Twelve month warranty Prices for larger and smaller units available on request. Water hardness test is $44.00 refundable on purchase.