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Air Operated Pinch Valve

A Cost Effective Solution to Flow Control Problems

Air Operated Pinch Valves offer a cost-effective solution to flow control problems. The secret is in the rubber sleeve - the valve's only wetted part. Actuation of the valve is accomplished by air or hydraulic pressure placed directly on the elastomer sleeve. The valve body acts as a built-in actuator, eliminating costly hydraulic, pneumatic, or electric operators. The sleeve's rugged flexibility allows the valve to close drop tight around entrapped solids. In general, 25 psi over line pressure is required for full closure of air actuated pinch valves. 

Red Valve Type A Air-Actuated Pinch Valve
  • Introduced and patented by Red Valve

  • Actuation of the valve is accomplished by air or hydraulic pressure placed on the sleeve. The valve body acts as a built-in actuator, eliminating costly pneumatic, hydraulic or electric actuators. Adding air pressure within the annular space between the body and the sleeve can open, throttle or close the valve.

  • The sleeve’s flexibility allows the valve to close drop-tight around entrapped solids, eliminating hang-ups that can damage the valve.

  • With Red Valve Type A Pinch Valves, there are no seats or packing to replace, or cavities or dead spots to collect debris and bind valve operation. 

  • Throttling control is accomplished by using a booster or proportional relay to modulate air pressure to the Type A Valve. A changing air signal through the proportional relay will modulate the Type A Valve.

  • Designed for highly abrasive applications, the Type A Double Wall Sleeve Valve outlasts even stellated V-Ball valves and metal seated valves on abrasive slurries. To compensate for the extra sleeve thickness, the valve body is increased to the next size.

  • Type A Valves equipped with a cone sleeve are designed specifically for throttling control applications. By reducing the effective port size, the Cv of the valve can match the Cv required.

Red Valve Type A Megaflex Air-Actuated Pinch Valve
  • Most economical large-diameter automatic valve available.

    • Available in sizes 20” to 8

  • As with every Red Valve Pinch Valve, the elastomer sleeve is the only wearing part, drastically reducing maintenance costs.

  • The Megaflex Valve’s full-ported actuation is accomplished by air or hydraulic pressure. The Megaflex Valve’s steel body acts as a built-in actuator, eliminating costly pneumatic, electric, or hydraulic components. Regulating and controlling the amount of different air pressure applied into the cavern between the outside of the sleeve and inside of the valve body will open, throttle or close valve. 15 psi over line pressure will close the Megaflex.

  • Like all Red Valve Pinch Valves, Megaflex Valves are full-ported. Thousands of dollars of savings are realized because Megaflex Valves have little head loss, substantially reducing pumping costs.

  • Type A Megaflex Valves are often used as effluent discharge valves controlling raw sewage, storm overflow, flow equalization, tailings in mining operations, and bulk material handling. 

Red Valve Type R Air-Actuated Pinch Valve
  • Red Valve’s all new Type R Air-Actuated Pinch Valve is an all-elastomer valve for water, chemical, solids and slurry applications.  The valve is easily installed between two pieces of pipe with hose clamps.  Simply add 20 psi air pressure over line pressure and the valve closes drop tight.

  • The Type R has all the advantages of a Pinch Valve.  There are no packing gland or seat crevices.  This full-port valve eliminates bridging or slurry dewatering blockage associated with metal seated valves.  Each time the valve flexes it self cleans.  The Type R Pinch Valve is ideal for use with pulse type control systems.

  • The lightweight design of the Type R Pinch Valve makes pipe supports unnecessary.  The type R is an excellent valve to have in stock for an instant valve repair or to isolate a pipeline.

  • The valve body us elastomer reinforced with fabric, bonded to the inner sleeve - the only wetted part. 

Red Valve Series 2600 Miniflex Air-Actuated Pinch Valve
  • Manufactured on the same design principles as Red Valve’s Type A Valve, Series 2600 Miniflex Air-Actuated Valves are the simplest and least expensive control valves available to industry today. The Series 2600 is designed with threaded end connections, enabling use on small lines (1/8”-2”).

  • Miniflex Valves are pneumatically actuated, using the valve body as a built-in actuator. Air pressure opens and closes the rubber sleeve, eliminating costly actuators or electric motors and the accompanying maintenance costs. Only 25 psi over line pressure is required for closure. Threaded end connections enable easy installation and removal.

  • The Miniflex Valve has only four parts and requires little or no maintenance. The valve cycles rapidly - making it ideal for sampling, filling, and controlling. The elastomer sleeve is molded and does not have fabric reinforcement, making it easier to open and close. The 2600 is also an excellent choice for chemical feeding, dry powder, bagging and plastic molding applications with controlling acids, slurries, reagents or catalysts.

Red Valve Series 4700 Air-Actuated Pinch Valve
  • The Series 4700 Air-Actuated Pinch Valve is constructed of spun aluminum for low pressure service, in control or on/off applications. The Series 4700 is similar to the Type A, but the body is constructed entirely of spun aluminum for weight savings and easy installation. The air actuated Series 4700 is ideal for OEM accounts, gravity flow applications, pneumatic conveying systems and waste treatment plants.

  • The Series 4700 Pinch Valve’s unique design makes them cost effective and maintenance free. The key to this valve is in the flexible reinforced rubber sleeve - the valve’s only wetted part.

  • Actuation of the valve is accomplished by air or hydraulic pressure placed upon the sleeve. The valve body acts as a built-in actuator, eliminating costly pneumatic, hydraulic or electric actuators. Adding air pressure within the annular space between the housing and sleeve can open, throttle, or close the valve. In general, 25 psi over line pressure is required for full closure.

  • The sleeve’s flexibility allows the valve to close drop-tight around entrapped solids, eliminating hang ups without ever damaging the valve itself. Sealing area is equal to 95% of the valve’s length.

  • With the Series 4700, there are no seats or packing to replace, cavities or dead spots to collect debris and bind valve operation. 

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