Lever 7 turns about fixed axis A and is connected by turning pair B to link 12 which is connected by turning pair C to the rod of piston 13. When the pressure increases in pipeline 15, membrane 1 is bent to the left, diverting jet valve nozzle 2, linked by spring 14 to point E of lever 7, in the same direction. Fluid from nozzle 2 is delivered to the left-hand channel and to the right end of cylinder 3. From here part of the fluid flows to the top end of power cylinder 5, lowering the piston and shutter 10, connected by turning pair D to piston rod 6. As pistou 13 moves to the left, lever 7 diverts jet valve nozzle 2 to the right. As fluid flows through flow-control valve 4, owing to the action of stretched spring 9, the servomotor piston (in cylinder 5) moves downward an additional amount, lowering shutter 10 again. Membrane 1 gradually moves to the right, diverting jet valve nozzle 2 to the rig until it reaches its middle position. The required pressure to be maintained in pipeline 15 is set by means of screw 11 which adjusts the force exerted by spring 8 on membrane 1. When the pressure drops in pipeline 15, the elements of the regulator operate in the reverse direction.
$4092$EHP,Rg$