More in Hydraulic Valves

Edited By Mary C. Gannon MNV-1010-303 miniature, motor controlled needle valve provides precise flow or pressure control in limited space. It operates with inlet pressure to 500 psi and remains stable during temperature fluctuations. It is normally ......More

Electrohydraulic proportional directional control valves from Atos Spa (below) provide closed-loop flow and pressure control, which lends itself to injection molding, metal die casting (above) and presses. The dual control moves actuators quickly into ......More

Digital proportional valve driver comes in a wide variety of configurations and is compatible with all makes of proportional valves. The newest version of its Digital Display Proportional Valve Driver was recently introduced by Lynch Fluid ......More

Pressure-control valves are found in almost every hydraulic system, and they help accomplish a variety of functions....More

Edited by Alan L. Hitchcox Technical Handbook has 28 pages of information on electrohydraulic components, including generic explanation of basic proportional digital control. Contains numerous performance curves, diagrams, and tables on ......More

Series 3500 2-way, 2-position normally open or normally closed solenoid/air operated pilot valve for air control has an ambient temperature range of -10° to 50°C. When combined with series 3000 solenoid operator and used as a direct acting/pilot ......More

Summarizing last month’s discussion, Figure 1 serves as a starting point for explaining the test method used by manufacturers and users of unloading compensator valves and for the development of its math model. The basic test parameters are the 4-way ......More

Edited By Mary C. Gannon Dale series CP and CX compact poppet valves and manifolds offer high-flow in a small, manifoldready design. Dirt-tolerant poppet design and continuous-duty rating provide long life. CP and CX 2- or 3-way valves are ......More

By Jack L. Johnson, P.E. Select figure to enlarge. Continuing our discussion of pressure compensated flow control, consider that the evolution of controls for mobile hydraulic machines has always placed levers and foot pedals at ......More

Shown is one of several configurations of the RH-0608 proportional valve driver. This configuration is intended for radio remote control and plugs into a valve’s DIN 43650 connector. Today’s electrohydraulic proportional ......More

By Jack L. Johnson, P. E. To conclude our discussion of unloading valves, consider that Figure 5 adds a 4-way spool to the valve drawing of Figure 3 from last month. Note that the spool has two additional ports. They switch the sense line so that the ......More

Edited by Mary C. Gannon CLK pressure-control valve has an added safety function that provides operational ease in hydraulic systems where temperature increases and/or external load peaks can cause problems. When closed, the seated valve is ......More