Sprinkler pressure regulator having a filter basket

A sprinkler assembly comprises:

• a base including a water inlet;
• a riser, in fluid communication with the inlet and movably mounted in the base to move from a retracted position to an extended position when based on water pressure provided by water entering the base through the water inlet;
• a nozzle housing in fluid communication with the riser and rotatably mounted on a top of the riser;
• a filter basket mounted on a bottom of the riser;
• and
• a pressure regulator mounted at a bottom of the riser and in contact with the filter basket;
• the pressure regulator including:
• an outer sleeve mounted on an interior wall of the riser;
• a pressure responsive member, movably mounted in the outer sleeve and movable from an open position in which a bottom edge of the pressure responsive element is spaced from a top surface of the filter basket to allow flow of water between the top surface of the filter basket and the bottom edge of the pressure responsive member and up the riser and a closed position where the bottom edge of the pressure responsive member contacts the top surface of the filter basket to prevent water from flowing;
• and
• a biasing element in contact with the pressure responsive member;
• wherein the pressure responsive member is biased in the open position by the biasing element and moves into the closed position when water pressure downstream of the pressure responsive element exceeds a predetermined value.