Pump system for a gas turbine engine

A pump system for a gas turbine engine comprising:

• a first pump connected to a fluid flow demand line delivering fluid to a fluid flow demand;
• a second pump connected, in parallel to the first pump, to the fluid flow demand line and configured to supplement fluid to an actuation or burner system of the fluid flow demand based on a flow demand;
• and
• a pressure regulating valve (PRV) fluidly connected to the fluid flow demand line for bypassing flow to a pump inlet of the first pump and second pump, and controlling a modulated pressure flow signal to a bypass valve;
• an Electronic Engine Control (EEC) which measures pressure at the fluid flow demand line for delivering fluid to the actuation or burner system from the first pump and from the second pump;
• a first Electro-Mechanical Interface Device (EMID) which receives electronic signals from the EEC, wherein the EMID is configured to actuate the PRV;
• a pressure sensor connected to the fluid flow demand line configured to supply a demand flow pressure data signal to the EEC;
• and
• a second EMID for controlling the bypass valve, wherein the bypass valve is in fluid communication with the second EMID via a pressure command line for receiving a pressure command from the EMID, and in fluid communication with the second pump for regulating delivery of fluid from the second pump to a bypass flow line.