- Mechanical drive from the camshaft in the reservoir. - Adjustable from 1 to 27 drops per stroke and deliver pressures up to 7500 psi. inch. - Robust design for high performance and long life thanks to easy adjustment of pump power. - 1/4 NPT inlet for improved flow in high viscosity materials and in cold environments. - Double ball outlet check valve reduces ball movement. - Improved O-rings to reduce leakage channels. - The roller of the ball bearing has excellent rotation properties to protect the camshaft from damage. Larger roller diameter diffuses load pressure to reduce wear and extend pump life.