What is a cast steel ball valve?
A cast steel ball valve is a valve in which the opening and closing element (the ball) is driven by a valve stem and rotates about the stem's axis. It is primarily used to shut off or connect media in pipelines, and can also be used for fluid regulation and control. Its operating principle is to open or close the valve by rotating the valve stem.
Features
Compact Structure: The cast steel ball valve itself is compact and easy to operate and maintain.
Reliable Seal: The sealing surface and the spherical surface of the cast steel ball valve are always in a closed position, making them less susceptible to erosion by the media and providing a reliable seal.
Low Fluid Resistance: The inner cavity of the cast steel ball valve provides a low-resistance, straight flow path for the media.
Easy Operation: Cast steel ball valves are easy to open and close, compact, and can be manufactured in large diameters. They also open and close quickly, requiring only a 90° rotation from fully open to fully closed, making them easy to control from a distance.
Wide Range of Applications: Cast steel ball valves are suitable for general working media such as water, solvents, acids, and natural gas, and are also suitable for media with harsh working conditions such as oxygen, hydrogen peroxide, methane, and ethylene.
Classification and Materials
Classification:
Based on actuation method, they can be classified into: handle cast steel ball valves, pneumatic cast steel ball valves, and electric cast steel ball valves.
Based on structural type, they can be classified into: floating ball valves and fixed ball valves.
Based on channel location, they can be classified into: straight-through ball valves, three-way ball valves, and right-angle ball valves.
Other classification methods also include cast iron ball valves, stainless steel ball valves, and all-copper ball valves.
Material: The valve body of a cast steel ball valve is typically made of cast steel, while key components such as the ball and valve seat may be made of wear- and corrosion-resistant materials such as carbide and polytetrafluoroethylene.
Applications:
Cast steel ball valves are widely used in industries such as petroleum refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, power generation, municipal engineering, and steel. It is particularly suitable for piping systems containing media such as fibers and tiny solid particles.
