Figure 3-15. - In-line axial piston pump.

Figure 3-16. - Bent-axis axial piston pump.

Figure 3-17. - Typical ball valve.

Figure 3-18. - Rising stem gate valve.

Directional control valves may be classified in several ways. Some of the different ways are by the type of control, the number of ports in the valve housing, and the specific function of the valve. The most common method is by the type of valving element used in the construction of the valve. The most common types of valving elements used in a hydraulic