As reported by Power & Motion in their article “Pneumatic Control for Hydraulic Systems: Benefits and Applications,” hydraulic systems can be controlled using various methods, including manually or electrically actuated valves, as well as pneumatic control. According to Steve Weber, Regional Application Specialist at Sun Hydraulics, the method chosen often depends on the specific application, with pneumatic control offering benefits such as convenience and safety.
In a pneumatically controlled hydraulic system, an external pneumatic pressure signal manages the hydraulic pressure, functioning similarly to hydro-mechanical or electro-hydraulic controls. Weber emphasized the importance of understanding both the regulated pneumatic pressure and the hydraulic pressure throughout the machine’s operation. This understanding is crucial for ensuring that the pneumatic pressure required for proper valve function is maintained.
Sun Hydraulics provides a range of pneumatic actuated relief and directional control valves, including direct-acting versions for flows up to 2 gpm (7.5 lpm) and pilot-operated relief valves for flows up to 200 gpm (760 lpm). These valves can control hydraulic pressures up to 5,000 psi with pneumatic pressures as low as 50 psi, depending on the hydraulic system’s needs.
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Article with all rights reserved, courtesy of powermotiontech.com
