Rotary selection valve

A rotary selection valve (1), the valve comprising a stator (20) and a rotor (40), said stator (20) and rotor (40) each having complementary abutment surfaces (30,50) for allowing generally fluid tight relative rotation between the stator (20) and the rotor (40) about a rotational axis, said stator comprising a plurality of connection ports each in fluid communication with an associated orifice in said stator abutment surface (30), characterised in that said stator further comprises a fluid recess (34) extending radially beyond said orifices and open to the stator abutment surface (30), in that the fluid recess (34) extends also in between the orifices, in that an inlet for the fluid channel is formed by a further central orifice (21) at the rotational axis and in that a fluid path (32) is formed in the rotor extending from the inlet radially outwardly to meet the fluid recess.

A method of cleansing a rotary selection valve, the method comprising the step of

• causing fluid to flow in a fluid recess of a rotary selection valve (1), the valve comprising a stator (20) and a rotor (40), said stator (20) and rotor (40) each having complementary abutment surfaces (30,50) for allowing generally fluid tight relative rotation between the stator (20) and the rotor (40) about a rotational axis, said stator or rotor comprising at least one connection port in fluid communication with an associated orifice at said stator or rotor abutment surface (30), and the fluid recess comprising a fluid recess extending radially beyond said associated orifice or orifices and open to the complementary abutment surfaces.