Hydraulic Repair Schematic

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Category: Valve

Valve

Hydraulic Cartridge Logic Valves

Posted on January 23, 2011October 27, 2012

These are simple two position Open/Shut valves using a poppet and seat. Figure 4.46 shows the construction and symbol for a normally open (pilot to…

Valve

Hydraulic Modular Valves and Manifolds

Posted on January 23, 2011October 27, 2012

Valves are normally mounted onto a valve skid with piping at the rear, or underneath, to allow quick changes to be made for maintenance purposes.…

Valve

Hydraulic Time Delay Valves

Posted on January 23, 2011October 27, 2012

Pneumatic time delay valves (Figure 4.28) are used to delay operations where time-based sequences are required. Figure 4.28a shows construction of a typical valve. This…

Valve

Hydraulic Shuttle Valves

Posted on January 23, 2011October 27, 2012

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…

Valve

Hydraulic Restriction check valves

Posted on January 23, 2011October 27, 2012

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…

Valve

Hydraulic Pilot-Operated Check Valves

Posted on January 23, 2011October 27, 2012

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…

Valve

Hydraulic Pilot-Operated Valves

Posted on January 23, 2011October 27, 2012

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…

Valve

Hydraulic Rotary valves

Posted on January 23, 2011October 27, 2012

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…

Valve

Hydraulic Sequencing Valves

Posted on January 14, 2011October 27, 2012

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…

Valve

Hydraulic Pressure Regulator

Posted on January 14, 2011October 28, 2012

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…

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