P4Q quick exhaust valves provide rapid exhaust of control air when placed between the control valve and the actuator. The P4Q quick exhaust valve has a greater exhaust capacity than the many four-way directional control valves, so increased cylinder speed can be accomplished with a smaller and less expensive control valve.
When a cylinder can quickly exhaust pressure, cylinder stroke speed will be reduced. Diaphragm materials are available in Nitrile and Viton to meet a wide variety of temperature and pressure operating conditions. P4Q Quick Exhaust Valves can also be used as shuttle valves, which determine a single pneumatic output from two separate inputs. If pressure is applied to both ports simultaneously, the valve will select the port with the higher pressure.

Markets
• Air and Gas
• Appliances
• Entertainment Automation
• Factory Automation
• Machine Tools
• Misc. Industrial
• Misc. Manufacturing
• Molding
• Packaging Machinery
• Printing and Marking Equipment
• Vehicle Assembly Facilities
• Wearing Apparel
• Food and Beverage
• Misc. Processing

Features/Benefits
• Increases piston speeds, super sensitive diaphragm
• Extremely low operating differential
• Virtually stiction free
• May be used as differential shuttle valve
• High temperature option

Applications
• Rapid retraction double acting cylinder
• Dual pressure actuation of double acting cylinder
• Bi-directional control of two double acting cylinders