Pollution control valve, drainage system and method

摘要

This invention relates to a pollution control valve (30, 32), and in particular to a pollution control valve suitable for isolating an interceptor tank (20) from the mains drainage system. The invention also relates to a drainage system (10) incorporating the pollution control valve, and to a method of constructing a drainage system. The pollution control valve (30, 32) has a housing with an inlet (58) and an outlet (60), and a panel (52) pivotably mounted within the housing. The panel is pivotable between a first position in which it closes a conduit between the inlet and the outlet and a second position in which it does not close the conduit. The valve has an actuator (62) which can move the panel to its closed position, and a control means (42) to control the actuator.