We do not have any technicians thatwho have worked on a Pennwalt Stokes Injection Machine, however,but we have worked a many other OEMs and should be able to help you with your pressure issues. Before we discuss any service call, we would like to get a copy of the Electricalelectrical and Hydraulic diagramhydraulic diagrams so we can familiarize ourselves with the machine. This can expedite the repair process and better serve your needs when we get to your facility.