Pneumatic shuttle valves are used to perform OR logic functions by automatically selecting between two air inputs. The range consists of Parker Hannifin pneumatic shuttle valves engineered for dependable signal control in compressed air systems. Standard designs support consistent switching behavior, common thread standards and compatibility with pneumatic tubing and fittings. Selection is based on pressure range, internal sealing concept and installation requirements. The offering includes genuine Parker products backed by professional technical support and fast worldwide delivery.