A Hand Control Valve, or manual control valve, is a type of valve that is operated manually by hand to regulate the flow of fluid (liquid or gas) within a system. Hand control valves are used to open, close, or adjust the flow rate in a pipeline and do not require electrical or pneumatic power for operation.
Main Functions:
· Manually control the flow of fluid.
· Regulate pressure or flow rate within the system.
· Isolate sections of the system, for example during maintenance or repairs.
· Open or close flow paths as needed for operational purposes.
Types of Hand Control Valves:
· Ball Valve: Quick open/close operation using a rotating lever
· Gate Valve: Used for fully open or fully closed flow; not ideal for flow regulation
· Globe Valve: Designed to regulate flow rate effectivel
· Needle Valve: Provides precise control of flow, especially in low-flow applications
· Butterfly Valve: Suitable for large flow systems and allows fast operation with compact design
Advantages:
· Easy to operate.
· Does not require any additional power source.
· Generally more affordable compared to automatic valves.
· Simple installation and maintenance.