Type A Pinch Valve Brochure

Introduced and patented by Red Valve, the air-actuatedType A Pinch Valve offers a unique, cost-effectivesolution to flow control problems. More Red Valve TypeA Valves are in use than any other pinch valve through-out the world. The secret is in the rubber sleeve – thevalve’s only wetted part.Actuation of the valve, the pinching action, is accom-plished by air or hydraulic pressure placed on thesleeve. The valve body acts as a built-in actuator,eliminating costly pneumatic, hydraulic or electricactuators. Modulating the air pressure within theannular space between the body and the sleeve canopen, throttle or close the valve. Approximately 35 psiover line pressure is required for closure.The sleeve’s flexibility allows the valve to close drop-tight around entrapped solids, eliminating hang-ups thatcould damage the valve. The sealing area is equal to 95percent of the valve’s length. There are no seats orpacking to replace and no cavities or dead spots tocollect debris and bind valve operation. The Type AValve’s abrasion resistance is unmatched. When thevalve is open, it operates like a straight piece of pipe inthe line. Type A Valves are used on remote locations orharsh environments since there are no external links,levers, pistons or rotating parts to cause downtime.ControlThrottling control is accomplished by using a booster orproportional relay to modulate air pressure to the TypeA Valve. A changing air signal through the proportionalrelay will modulate the Type A Valve.Type A Double WallDesigned for highly abrasive applications, the Type ADouble-Wall Sleeve Valve outlasts even stellited V-Ballvalves and metal-seated valves on abrasive slurries. Tocompensate for the extra sleeve thickness, the valvebody is increased to the next size.Type A ConeType A Cone Sleeve Valves are designed specifically forthrottling control applications. The Cv of the valve canbe matched to any requirement by reducing the port atthe center of the sleeve. The port reduction is main-tained through the downstream half of the sleeve forincreased wear resistance, and, since pressure recoveryoccurs downstream of the valve, cavitation is minimized.Type A Pinch ValveP Closes drop-tight on entrapped solidsP Body functions as built-in actuatorP No cavities or dead spots to bind valve operationP Full-port, double-wall or cone sleeve trimP Simple design not affected by harsh externalenvironmentsP No packing to replace or maintain, everP Cost effective, maintenance freeP Cast iron or aluminum bodyP Sleeves available in Pure Gum Rubber, Neoprene,Hypalon®, Chlorobutyl, Buna-N, EPDM and Viton®P ANSI Class 125/150, 250/300Materials of ConstructionControlling a Type A with a Proportional RelayRed Valve recommends an adjustable relay (as opposedto a fixed, proportional relay).ExhaustPlant AirInstrumentAirPlant Air To Type AInstrument AirExhaustPlant AirSupplyAir toType AType A – Double WallPORT WORKING WEIGHT AIRVALVE SIZE LENGTH HEIGHT PRESSURE CAST IRON INLETSIZE P L H psi lbs NPT1" 1/2" 5" 4-1/4" 150 11 1/4"2" 1" 9" 6-1/2" 150 33 1/4"2-1/2" 1-1/2" 10" 7" 150 42 1/4"3" 2" 12" 8" 150 57 1/4"4" 2-1/2" 12-1/2" 10-5/8" 150 88 1/4"4" 3" 12-1/2" 10-5/8" 150 88 1/4"5" 4" 16-1/2" 11-1/2" 150 123 1/4"6" 5" 20" 13" 150 171 1/4"8" 6" 22" 16-1/4" 125 239 1/4"10" 8" 24" 21" 100 432 1/4"12" 10" 26" 24" 100 648 1/4"14" 12" 30" 22" 75 826 1/4"16" 14" 34" 29-1/2" 75 970 1/4"18" 16" 39" 30-1/2" 50 1,343 3/4"*20" x 24" 18" 43" 31" 50 1,800 1"*24" x 28" 20" 51" 38-1/2" 50 2,365 1"Type A – ConeAVAILABLE WORKING WEIGHT AIRVALVE PORT SIZES LENGTH HEIGHT PRESSURE CAST IRON INLETSIZE P** L H psi lbs NPT1" 1/4", 1/2", 3/4" 5" 4-1/4" 150 9 1/4"1-1/2" 3/4", 1", 1-1/4" 7" 5" 150 17 1/4"2" 3/4", 1", 1-1/2" 9" 6-1/2" 150 32 1/4"2-1/2" 1", 1-1/2", 2" 10" 7" 150 40 1/4"3" 1-1/2", 2", 2-1/2" 12" 8" 150 55 1/4"4" 2", 2-1/2", 3" 12-1/2" 10-5/8" 150 85 1/4"5" 2-1/2", 3", 4" 16-1/2" 11-1/2" 150 119 1/4"6" 3", 4", 5" 20" 13" 150 166 1/4"8" 4", 5", 6" 22" 16-1/4" 125 235 1/4"10" 5", 6", 8" 24" 21" 100 425 1/4"12" 6", 8", 10" 26" 24" 100 640 1/4"14" 8", 10", 12" 30" 22" 75 810 1/4"16" 10", 12", 14" 34" 29 1/2" 75 940 1/4"18" 12", 14", 16" 39" 30 1/2" 50 1,321 3/4" *20" x 24" 14", 16", 18" 43" 31" 50 1,770 1" *24" x 28" 16", 18", 20" 51" 38 1/2" 50 2,277 1"Type A – Full PortWORKING WEIGHT AIR AIRVALVE LENGTH HEIGHT PRESSURE CAST IRON VOLUME INLETSIZE L H psi lbs ft3 NPT1/2" 3" 3-1/2" 150 5 .002 1/4"3/4" 4" 3-3/4" 150 7 .002 1/4"1" 5" 4-1/4" 150 9 .002 1/4"1-1/2" 7" 5" 150 17 .007 1/4"2" 9" 6-1/2" 150 32 .016 1/4"2-1/2" 10" 7" 150 40 .028 1/4"3" 12" 8" 150 55 .049 1/4"4" 12-1/2" 10-5/8" 150 85 .091 1/4"5" 16-1/2" 11-1/2" 150 119 .187 1/4"6" 20" 13" 150 166 .327 1/4"8" 22" 16-1/4" 125 235 .640 1/4"10" 24" 21" 100 425 1.09 1/4"12" 26" 24" 100 640 1.70 1/4"14" 30" 22" 75 780 2.39 1/4"16" 34" 29-1/2" 75 910 3.59 1/4"18" 39" 30-1/2" 50 1,275 5.27 3/4" *20" x 24" 43" 31" 50 1,704 7.25 1" *24" x 28" 51" 38-1/2" 50 2,100 12.5 1"*Valve uses extended flange.**Other port sizes available – consult factory.HLHLPHLP