Valve apparatus

A valve apparatus for connection to a tank or pipe, the valve apparatus comprising a housing, the housing comprising a closed end wall and a side wall extending from the periphery of the end wall to an opposite end, the valve apparatus further comprising a first opening and a second opening communicating with respective first and second conduits each for providing ingress and egress of fluid into and out of the housing through the first opening and the second opening, the side wall at least partially defining the second conduit and the second opening being at the opposite end of the side wall, the opening of the second conduit completely surrounds the first conduit in a radial direction,

• the housing containing discrete first and second valves which are spaced apart from one another, the first and second valves selectively controlling fluid flow between the first and second conduits, wherein, in use, a first fluid flow path along a first principal flow axis of the first conduit and a second fluid flow path along a second principal flow axis of the second conduit are parallel and opposed, the first and second fluid flow paths extending between the first and second openings, the first valve is configured to open when a pressure in the first conduit is greater than a first pressure and the second valve is configured to open when a pressure in the first conduit is less than the first pressure.