Maximator air driven high pressure liquid pumps are ideal for various oil, water and chemical applications where they are predominantly used for Pressure testing or applying pressure in fluid power applications. The Maxpro high pressure liquid pump can deliver output pressure up to 60,000 psi, and is available in single acting and double acting models, in a variety of materials to suit a wide range of fluids.
The Maxpro liquid pump is divided into 3 main sections: The Air Drive Section, the Hydraulic Section, and the Spool Valve.
The air drive forces the piston down on a compression or pressure stroke. The piston is then forced back with the air on the suction stroke.
The purpose of the hydraulic section is to pull the liquid into the hydraulic body through an inlet check valve and push that liquid out of an outlet check valve at a higher pressure. Both these valves are spring loaded. During the suction stroke, the inlet valve opens up and the outlet valve remains shut. On the pressure stroke, the inlet valve closes up, while the outlet valve opens up. Thus, when the hydraulic piston moves up and down in the air drive, the liquid moves in and out through the hydraulic section.
The spool valve section contains an unbalanced, pilot operated, lightweight spool that moves the compressed air to both sides of the air piston. This depends on the position of the piston. The drive air is vented through an exhaust muffler.
The Maxpro air driven liquid pumps thus work on the standard reciprocating differential area principle and use a large air drive piston connected to a smaller hydraulic piston to convert the compressed air into hydraulic power.
