Pulser Main Valve Assembly

Principle: Drilling fluid passes through the drill string down to the main valve assembly, where part of the fluid enters the valve body through the main valve’s filter head, while the remainder flows through the gap between the flow restriction ring and the main valve body (main valve). The drilling fluid flowing into the main valve body reaches the control valve assembly, exiting through the drainage holes on the outer shell of the control valve capsule.

Control the lifting of the main valve via the control valve assembly, adjusting the flow area between the flow restriction ring and the main valve.