Ball valve

From GAWDAwiki

A ball valve is a valve in which a spherical ball (sometimes spring-loaded) is used to block flow. If a spring is not used, reverse flow is used to move the ball back and create a seal. Interior walls are usually conically tapered to direct the ball into the seat.^[1]

Other Types of Valves

Other types of gases and welding valves include:

• Butterfly valve
• Compressed gas valve
• Cylinder valve
• Diaphragm check valve
• Gate valve
• Globe valve
• Life support valve
• Lift-check valve
• Manifold valve
• Metering valve
• Needle valve
• Pneumatic valve
• Post valve
• Pressure relief valve
• Residual pressure valve
• Shutoff valve
• Solenoid valve
• Stop-check valve
• Swing check valve

References

1. http://www.answers.com/topic/check-valve