M & D Jenkins Industrial Suppliers We are able to offer exceptional service with actuation packages with in house facilities to enable fitting and testing of most requirements such as: Spring Return Pneumatic Actuators, Double Acting Pneumatic Actuators, a wide range of Solenoid valves with various voltages and specifications, Switchboxes and Positioners Because we are distributors and not manufacturers, we are able to offer the correct quality product for each need and pride ourselves on the quality of both our service and the products we stock and offer