Figure 3-15.—In-line axial piston pump.
Figure 3-16.—Bent-axis axial piston pump.
3-11
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
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