An increase in cylinder speed can thus be achieved by using a smaller, less costly control valve. Pressure to cylinder cylinder to exhaust catalog number 14. Quick exhaust valves increase the speed cycle on single or doubleacting air cylinders. A quick exhaust valve is a valve that seals off the in port forcing the air to the exhaust port. Male pipe threads at the supply port, on the direct. Unionstem type thread type eq h quick exhaust valve series. Quick exhaust valves are built in either aluminum or plastic body construction, in 14 and 38 sizes. Humphrey super quick exhaust valves feature a special molded shuttle designed especially for quick exhaust valve service. For effective performance, the quick exhaust valve must be mounted directly on the cylinder port. Exhaust valve that is close coupled to the cap end of the cylinder. Quick exhaust valve with onetouch fittings construction with silencer with exhaust port fitting dimensions with silencer with exhaust port fitting as asp asn aq asv ak vchc ass ke tmh asr asq p0547p0594e. Quickexhaust valves qevs for short are readymade piston valves or diaphragm valves, designed to quickly exhaust pneumatic cylinders. Compressed air moves from the valve to the cylinder when the valve is shifted, then from the cylinder to the atmosphere.
Quick exhaust senses pressure differential and redirects exhausting air to its third port. It drastically increases system efficiency and the speed of a cylinder by purging cylinder exhaust air at the cylinder port rather than the control valve. Quick exhaust valve series in response to highspeed drive cylinder. Quick exhaust valve for pinch valve to increase reaction time. A v ailability, design and specifications are subject to change without notice. Quick exhaust valves are commonly used to increase the speed of cylinders or for rapid depressurization of tanks containing compressed air. They work somewhat similarly to pneumatically modified sprinkler valves, they are more expensive and harder to find, but also perform better qevs need a separate pilot valve for triggering. Npt exhaust port versicn dotted lines mounting bracket port port port npt zrs right angle version. Six exhaust holes relieve large amounts of flow in a minimal amount of time 100 cubic inches in 1 second making it ideal for allowing rapid cylinder return without air traveling back through the system. Install quick exhaust valves in the ports of a double acting or single acting air cylinder to obtain maximum speed. Quick exhaust valve series 489 quick exhaust valve series antispatter series pp series stainless series throttle needle valve series constant flow series pp series antispatter series stainless series speed controller series controller fitting chart p.
Quick exhaust valves 18 to 34 ports parker hannifin. This range of metal quick exhaust valves is offered in nickelplated brass, aluminium and stainless steel. They can be very sensitive, triggering at a pressure drop of a few. In other applications, the third port may be plugged for a check valve function, or restrictedmetered for an excellent flow control function. Valve specifications operating pressure air maximum. B option c accessory how to order quick exhaust valve 6 a p qev268 qev210152025. The cost of a quick exhaust is a small upfront price to pay for continuous savings on your pneumatic powered equipment. When using a control valve with without flow control valves, install quick exhaust valves, with adjustable exhaust accessory, in cylinder ports to obtain speed control. Installed at the cylinders ports, this valve may come with mufflers to dampen the sound. Readjustment of exhaust flow is not necessary when. Quick exhaust valves inline the 570 inline quick exhaust offers the convenience of inline plumbing with a 18 npt output and 18 nptf input. Our policy is one of continued research and development. They are particularly useful in connection with directional control valves to give increased speeds to pneumatic cylinders by exhausting the cylinder to atmosphere via a larger exhaust port than is used on the valve operating the cylinder. Refer to back page 50 for safety instructions and pages 543 to 546 for flow control equipment.
We therefore reserve the right to amend, without notice. Applications of quick exhaust valves sealexcel blog. Browse aventics quick exhaust valves in the distributor to industry, inc. Compact, 3ported valves have oversized orifice for quick exhaust of cylinders, brakes, actuators, clutches, etc. Quick exhaust valve or air exhaust valve, available from 18 to 1 bsp. Pushin fitting type quick exhaust valve quick exhaust. Quick exhaust valve quick exhaust valve 5 port valve 2 2 11 3 clutch or brake quick exhaust valve 3 port valve 2 1 3 jis symbol 1 2 3 b usage for quicker exhaust of clutch or brake 1 a port size qev2 model no. Commonly used in the exhaust line from actuatorscylinders to expel air quickly. With exhaust port with silencer fitting specific product precautions be sure to read this before handling the products. Exhaust port with onetouch fittings inline type body size quick exhaust valve note brass parts are all electroless nickel plated.
In this circuit, a qev and a threeway control valve is involved. Consult festos entire quickexhaust valves seseu, npt catalogue on directindustry. Pneumadynes inline quick exhaust valve qev offers the convenience of inline plumbing with a 18 npt ouput and 18 npt f input. Original mak premium exhaust valves optimised lifetime excellent reliability short delivery time excellent quality low total cost parts news. Please note that the face is still in excellent condition after 15,000h. Quick exhaust performance data valves pneumadyne, inc. Qevs generally have a greater exhaust capacity compared to fourway control valves. Quick exhaust valves legris quick exhaust valves can be used in all pneumatic equipment. The purpose of a quick exhaust valve with a pinch valve is to evacuate cylinder air directly into the atmosphere. Free shipping on many items browse your favorite brands. How a quick exhaust valve works quick exhaust valve. A quick exhaust valve commonly referred to as a quick dump valve is a 32 valve with an extra large exhaust orifice designed to fit directly onto the cylinder port connection, to increase the cycle speed in a pneumatic system. Diaphragm materials are available in urethane, viton and teflon to meet a wide variety of operating conditions.
Allow use of smaller pipe lines and control components when used as a shuttle valve, high pressure from the two inlets exits through the common outlet 316l stainless steel constructions for corrosive environments. Outstanding exhaust characteristics are achieved with the large flow rate design. Diaphragm materials are available in urethane, nitrile, fluorocarbon, and ptfe to meet a wide variety of operating conditions. When the exhaust air is routed to atmosphere before the valve, it allows for the use of a smaller valve in the application. One quick exhaust valve is used in each port of the cylinder to ensure an increase in the speed of the rod in both directions. All three of these factors are centered on reducing inefficiency. This product contains a chemical known to the state of california to cause cancer and birth defects or other reproductive harm. For use with polyurethane, polyethylene, or ptfe tubing. The zncn510 range of quick exhaust valve is designed for application where it is required to discharge an air reservoir or cylinfer quickly.
If the pressure at 1 decreases, 2 is exhausted to 3 through the builtin silencer. Because the quick exhaust valve has a greater exhaust capacity than the fourway control valve, increased cylinder speed can be accomplished with a smaller and less expensive control valve. The third port can be left open, increasing cycling speeds and improving performance of the air cylinder. Get the best deals on quick exhaust valves when you shop the largest online selection at. The use of a quick exhaust valve in a pneumatic system helps to increase cycling speed, in turn, that ensures a much smaller valve to be effectively used for the process. In comparison on the right you see a new premium exhaust valve. Legris quick exhaust valve 19h0157982 11 11 grainger. They reduce the risk of caustic chemicals escaping into sensitive environments by redirecting air into the pump containment area. The quick exhaust valve should be installed as close as possible to the device to be vented. Exhaust needle valve type the silencer reduces the. Quick exhaust valves provide rapid exhaust of control air when placed between control valve and actuator.
Alpha controls supply a wide range of products, including solenoid valve, pneumatic valves, actuated ball and butterfly valves, pressure switches, pneumatic valves actuators and angle seat valves. We have a number of product ranges allowing us to select the best products for your application. It is ideal for allowing rapid cylinder return without air traveling back through the system. Compressed air flows from the pilot valve and via the quick exhaust valve to the cylinder. The quick exhaust valve comes with a builtin quick fitting.
The 12, 34 and 1 sizes are built with only the aluminum body. These valves, which are suitable for any environment. Pneumadyne inc quick exhaust valve,18 in,npt, c570501. If rapid piston retraction required, by using quick exhaust valve, task can be accomplished effectively with minimal expense. Shop quick exhaust valves at and browse our extensive selection of industrial parts and supplies for all your mro needs. Aventics quick exhaust valves on distributor to industry, inc. Refer to front matters 58 and 59 for safety instructions and pages 412 to 414 for flow control equipment. They are made of uhmwpe, and are available in four sizes. Opening as soon as the control valve begins, exhausting this valve provides a quick exhaust of the cylinder air directly into the atmosphere, increasing the speed of movement of the reversing cylinder. Exhaust time sec in3 10010 psi fill time sec in3 090 psi l flow information supplied for flow path 1220 8. Quick exhaust valve series pisco pneumatic equipment.
Three reasons you should use a quick exhaust valve on your. With exhaust port with silencer fitting specific product precautions be sure to read before handling. The exhaust port, having a throttling function, enables the highspeed control of the cylinder. Unfollow quick exhaust valve to stop getting updates on your ebay feed. They feature a special molded shuttle designed especially for quick response, high flow and long.
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