High-volume, part-circle sprinkler head

A high-volume sprinkler head comprising:

• a barrel having a nozzle at one end thereof, said barrel having a fixed portion and a relatively movable portion adapted for adjustably limited pivoting movement relative to said fixed portion, said barrel mounted on an annular upper support base rotatably supported on a lower stationary base for rotation in opposite directions through an arc about a substantially vertical axis;
• a fluid-operated actuator arranged to pivot said relatively movable portion of said barrel relative to said fixed portion of said barrel between predetermined first and second reaction angles that cause said barrel and said annular upper support base to rotate in opposite directions through an arc about a substantially vertical axis, respectively, when a stream is emitted from said nozzle;
• first and second magnets adjustably supported at circumferentially-spaced locations about an edge of said lower stationary base, thereby enabling adjustment of said arc;
• a magnetic valve mounted on said upper support base in fluid communication with said actuator, said magnetic valve adapted to align with one of said magnets upon rotation of said barrel and said annular upper support base in one of said opposite directions and to align with the other of said pair of magnets upon rotation of said barrel and said annular upper support base in the other of said opposite directions, about said substantially vertical axis, respectively, to supply fluid under pressure to said fluid-operated actuator to cause said relatively movable portion of said barrel to pivot to said first predetermined reaction angle, and to drain fluid from said fluid-operated actuator to cause said relatively movable portion of said barrel to pivot to said second predetermined reaction angle;
• and further comprising a stream interrupter rod having a distal end movable into and out of the stream emitted from said nozzle.

A high-volume sprinkler head comprising:

• a barrel having a nozzle at one end thereof, said barrel having a fixed portion and a relatively movable portion adapted for pivoting movement relative to said fixed portion, said barrel mounted on an annular upper support base rotatably supported on a lower stationary base for rotation in opposite directions through an arc about a substantially vertical axis;
• an actuator arranged to pivot said relatively movable portion of said barrel relative to said fixed portion of said barrel between predetermined first and second reaction angles that cause said barrel and said annular upper support base to rotate in opposite directions, about said substantially vertical axis, respectively, when a stream is emitted from said nozzle;
• first and second stops supported at circumferentially-spaced locations about an edge of said lower stationary base;
• and
• a valve mounted on said annular upper support base in fluid communication with said actuator, said valve adapted to cause fluid to propel said actuator to move said movable barrel portion to said predetermined first reaction angle when said valve is proximate to said first stop, and further adapted to cause fluid to propel said actuator to move said movable barrel portion to said predetermined second reaction angle when said valve is proximate to said second stop, wherein said valve is a magnetic valve and said first and second stops comprise first and second magnets.