Valve Mechanical Motion Classification

Linear Motion Valve  -  When the valve closure moves in a straight line.

• Angle Globe Valve
• Diaphragm Valve
• Gate Valve
• Globe Valve
• Lift Check Valve
• Pinch Valve
• Piston Check Valve
• Safety Valve
• Stop Check Valve
• Relief Valve

Rotary Motion Valve  -  When the valve closure travels along an angular or circular path.

• Ball Valve
• Butterfly Valve
• Plug Valve
• Stop Check Valve
• Swing Check Valve
• Tilting Disk Check Valve

Quarter Turn Valve  -  Motion of the stem goes from full open to full closed or the opposite, 0 to 90 degrees.

• Ball Valve
• Butterfly Valve
• Plug Valve