Patent ID: 7621211

Claim:
A valve comprising: a valve body including a main chamber having a first port and a second port; a main poppet disposed within the main chamber and being movable between an open position and a closed position to control fluid flow between the first port and the second port, the main poppet forming a control chamber within the main chamber; a first passage communicating the control chamber with the second port; a second passage communicating the control chamber with the first port; a pilot valve having a pilot poppet for controlling fluid flow between the control chamber and the first port through the second passage; a first spring coupled between the main poppet and the pilot poppet to provide a force proportional to a distance between the main poppet and the pilot poppet; a pressure compensator disposed at least partially within the main poppet, and fluidly connected to the second port via the first passage, and a second spring coupled between the pressure compensator and the pilot poppet to provide a force proportional to a distance between the pressure compensator and the pilot poppet.