Backflow preventers protect drinking water quality in parts of a system which are at risk. Honeywell manufactures and supplies a range of devices from simple check valves to the more complex reduced pressure zone BA device. These can help reduce the risk of backflow, back siphonage and back pressure of contaminated water. On completion of an installation, the backflow preventer must be commissioned by an approved tester before putting it into use and thereafter tested annually to meet the requirements of the water regulations.

The RV283P check valve can be used as an independent means of preventing reverse water flow and are for installing directly after a water meter, but also for application in transfer pipes on district water supply systems. They can also be used for industrial, commercial and similar systems where back pressure,...
The RV281 check valve can be used as an independent means of preventing reverse water flow and for installing directly after a water meter on central water supply systems. They can also be used for industrial, commercial and similar systems where back pressure, backflow and back siphonage must be prevented. For use...
The RV284A and RV284B check valves protect the mains water system against back pressure, back flow and back siphonage. They can be used to protect against applications up to and including liquid Category 2 in residential, commercial and industrial buildings. The valves conform to BS6282 Part 1 for use in hot or cold...
Backflow preventers of this type are suitable for the protection of drinking water systems against back pressure, back flow and back syphonage. Fluids up to and including liquid category 4 to EN 1717 are protected. They can be used for residential buildings, industrial and commercial purposes within the scope of their...
The BA295S backflow preventer protects drinking water systems against back pressure, backflow and back siphonage. They can be used to protect against applications up to and including liquid category 4 in residential, commercial and industrial buildings. Typically, these valves are to be fitted inline to the supplies...
  The BA300 Backflow Preventer is designed to protect drinking water systems against back pressure, back flow and back siphonage in residential building, industrial and commercial applications up to liquid category 4. The innovative design makes installation quicker and maintenance time is reduced, as...
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