Product Code: 09/0335 . 09/0336
Drop arms enable the correct 'air gap' to be achieved. They are available to suit all float operated piston type valves.
Drop arms are designed to reduce the risk of 'back siphonage' into the mains water supply by increasing the size of the 'air gap' between the water level in the tank and the 'outlet' of the valve when the valve is in the closed position.
Note: It is important to ensure that the correct size is fitted to suit each individual installation. The drop arm should "not" be of a length that would allow the float to swing under the valve body.