Valve arrangement, system and method

A valve arrangement comprising:

• a housing having a port;
• a closure member defining a bore, the bore being of a smaller flow area than an adjoining flow area that produces a lower pressure in flowing fluid therein than pressure in fluid flowing in the adjoining flow area, the closure member being disposed within the housing and movable between a closed position and an open position;
• a first volume defined between the closure member and the housing;
• a second volume within the housing;
• a seal between the first volume and the second volume;
• an opening in the closure member extending from the first volume to the bore of the closure member to convey fluid pressure generated in the bore of the closure member to the first volume thereby creating a lower pressure in the first volume than in the second volume using the same flowing fluid thereby biasing the closure member into a closed position.