A shuttle valve, also known as a double check valve, allows pressure in a line to be obtained from alternative sources. It is primarily a…
Category: Valve
The speed of a hydraulic or pneumatic actuator can be controlled by adjusting the rate at which a fluid is admitted to, or allowed out…
The cylinder in the system in Figure 4.22 should, theoretically, hold position when the control valve is in its centre, off, position. In practice, the…
With large capacity pneumatic valves (particularly poppet valves) and most hydraulic valves, the operating force required to move the valve can be large. If the…
Rotary valves consist of a rotating spool which aligns with holes in the valve casing to give the required operation. Figure 4.15 shows the construction…
Sequence valves control the sequence of operation between two branches in a circuit; that is, they enable one unit to automatically set another unit into…
Pressure regulators, often referred to as unloading valves, are used in fluid power systems to regulate pressure. In pneumatic systems, the valve, commonly referred to…
Needle valves are similar in design and operation to the globe valve. Instead of a disk, a needle valve has a long tapered point at…
Globe valves are probably the most common valves in existence. The globe valve gets its name from the globular shape of the valve body. Other…
Gate valves are used when a straight-line flow of fluid and minimum flow restriction are needed. Gate valves are so-named because the part that either…