At its most basic, a valve is a device used to control, regulate, or direct flow in a system or process. They usually have a set of properties that help define their ideal application.

But whether you're trying to control flow and provide safety in systems piping liquids, solids, gases, or anything in between, there may be stainless steel valves that can help.

Most valves fall into one of three categories:

（1）Manual Valves: Typically adjusted by hand, these valves use handwheels, hand levels, gear wheels, or chains to actuate.

（2）Actuated Valves: Often connected to electric motors, air or pneumatic systems, hydraulic systems, or solenoids, these valves allow remote control and automation for high-precision or large-scale applications.

（3）Automatic Valves: Some valves activate when a specific flow condition is met. Examples include check valves closing during backflow or pressure release valves activating when an over-pressure condition is detected.

Then we also need to explain the opening of the valve. While many valves achieve similar goals, the way they mechanically achieve this can vary. How the valve opens and closes not only affects overall performance, but also determines how much control you have over the flow and how fast the valve operates.

By the way, valves provide a variety of functions, including:

·Start or stop flow based on valve status.

·Regulate flow and pressure within piping systems.

·Control the direction of flow within a piping system.

·Throttling flow in the piping system.

·Improve safety by releasing pressure or vacuum in piping systems.

We produce all kinds of angle valves, such as Brass Gas Valve, Brass Angle Valve and others, there is always one to meet your needs.