Needle valve

From GAWDAwiki

A needle valve is a kind of metering valve that uses a sharp, conical obstruction to block or allow flow.^[1]

A round steel rod with a conical or tapered point that seats against an outlet and prevents fuel oil from entering the engine cylinder except when it is lifted by a cam or oil pressure.^[2]

Other Types of Valves

Other types of gases and welding valves include:

• Ball valve
• Butterfly valve
• Compressed gas valve
• Cylinder valve
• Diaphragm check valve
• Gate valve
• Globe valve
• Life support valve
• Lift-check valve
• Manifold valve
• Metering 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.toolingu.com/definition-570235-28473-metering-valve.html
2. http://www.s-logics.com/e-glossary/?x=n