Flow based pressure isolation and fluid delivery system including flow based pressure isolation and flow initiating mechanism

A method of protecting a pressure transducer from fluid pressure damage using a pressure isolation mechanism comprising an inlet port, an isolation port, and an internal cavity wherein a free floating, fluid flow responsive valve member is disposed and adapted to engage a seal seat in the internal cavity, and a flow initiating mechanism is associated with the isolation port, the method comprising:

• associating the pressure transducer with the isolation port;
• placing a pressurizing device for delivering fluid under pressure in fluid connection with the inlet port;
• actuating the pressurizing device to cause fluid flow in the inlet port such that the free floating, fluid flow responsive valve member engages the seal seat to attain a substantially closed position and prevent fluid flow between the inlet port and isolation port;
• and
• wherein upon actuation of the pressure device, the flow initiating mechanism initiates flow around the valve member such that the valve member operates to the closed position substantially upon fluid flow initiation.