 One of the most significant of PIKA's inventions has been the Paralcon Hydraulic valve system that can be used on any twin boom extending-retracting crane.This valve uses return oil flow pressure to power the extension piston, and flow oil pressure to power the retraction movement of the crane, as opposed to standard configurations that use additional pumps to power these crane movements.The result is that far less motor torque is necessary to operate the crane, which consumes far less fuel; this in turn saves operators money and reduces CO2 emissions for the machinery in use.