Non-Return Valves

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The pvc non return valve is an anti flooding device for use in horizontal pipes. The unit closes the pipeline automatically when backflow occurs. The option exists to lock the valve in the closed position for added security. This would ensure that no through drainage would be allowed. 
 
For installation...
 
1. Ensure the valve is set horizontally as it already has a built in fall.
2. Ensure that the unit is installed in accordance with the direction of flow as
    indicated by the arrow on the cover.
3. Ensure that the handle is set in the 'open' position to allow discharge to
    pass through it.
 
For maintenence...
 
The emergency closure device should ideally be tested once every six months. In case of dirt and deposits, remove the cover, clean the parts and gaskets.
 
Please ensure the terms and conditions of contract are read and fully understood prior to any order.