Why are the discharge pressures lower in the “X” pumps?
A4: There is a direct correlation between the air/gas supply going into the pumps vs. the discharge pressure coming from the pumps. The MK X and MK XII have a maximum air/gas supply range of 100 PSI vs 65 PSI for the MK II and 90 PSI for the MK VII controllers used on the “X” series. The higher the supply air/gas pressure the greater the pump discharge pressure.