Improvements to double acting pneumatic actuators comprises non-return valve between compressed air supply source and actuator chamber enabling adjustment of reduction of chamber supply pressure relative to supply source

摘要

The pneumatic actuator comprises a non-return valve (17) interposed between the compressed air supply source (12) and the actuator chamber (13) ensuring the return of the piston (11). The non-return valve spring rating enables the value of the chamber supply pressure reduction relative to the pressure of the supply source to be adjusted.