The 2543 is a solid, bronze and stainless steel pneumatic control head, consisting of two lever-cam operated self-relieving regulating valves, allowing for dual output. With the handle in the centre or "off" position, both outputs are at lowest pressure. Movement of the handle in either direction delivers regulated pressure to the chosen output based on handle direction. 

The 2543 has a maximum supply pressure of 150 PSI (10.3 BAR), and a 1/8" NPT.