Airlocks High-Quality, Reliable Services
MAC provides a complete line of rotary airlocks suitable for applications ranging from gravity discharge of filters, cyclones and storage devices to precision feeders for dilute phase and continuous dense phase pneumatic convey systems. Airlock performance relates directly to the material being handled and the application. Please contact us for assistance or advice in the selection of an airlock.
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Multi-Duty Airlocks are MAC Equipment’s most versatile airlocks, suitable for many material handling applications. The unique TS4 seal ensures long valve life with minimal maintenance. The valve is designed for operating differential pressures less than 15 PSIG. The unique square inlet flange design allows for direct replacement of many competitive valves by matching flange patterns without exceeding overall height dimensions. The Multi-Duty Airlock can be utilized to convey powder or pellets.
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RAM Airlocks use a lot of the same design features as the MD Airlock, but includes round, flanged inlet and outlet connections with 150# drilling. The basic valve is designed for 15 psi differential pressure service and comes complete with a fabricated, machined, eight-vane open end rotor. The RAM is available in six sizes with a broad range of options and accessories to fit most any application including: closed end rotors, adjustable tip rotors, abrasion resistant coatings and elevated temperature service.
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High-Efficiency Airlocks feature an integral doweled inspection panel for access to the interior of the housing and rotor and an angled, cast inlet to reduce shear and distribute wear.
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MTA Airlocks are designed for a maximum differential operating pressure of 30 PSIG. They are available in gray iron, stainless steel and aluminum. The MTA rotary valve is designed to be dimensionally interchangeable from flange to flange with the popular FTA rotary airlock.
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SEA Rotary Airlocks have an offset inlet and discharge to reduce product shearing of pelletized and chip materials as they pass through the inlet and discharge rotation. These valves also feature round 150 lb. drilling heavy-duty flanges.
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TRA Rotary Airlocks have a tapered rotor design to allow rotor adjustment when wear occurs. The TRA features a body vent on the "up" side of the rotation to vent blow-by air from pressure pneumatic convey systems. These valves also feature round 150 lb. drilling heavy-duty flanges.
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CV Rotary Airlocks feature a blow-thru end plate design which allows attachment of the convey line directly to the end plates of the airlock. Convey air flows through the CV valve, blowing material from the rotating pockets directly into the convey line. Style “A” CV valves feature an inlet baffle attachment to vent blow-by air as the empty pocket rotates up to be refilled with product. Style “B” CV valves do not include the inlet baffle arrangement.
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RV Rotary Airlocks feature inboard bearings and lip seals. These valves are typically used when handling non-abrasive powders or products that will not damage the seal.
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OBRV Rotary Airlocks feature outboard bearings and shaft braided packing seals. They are typically used when handling products that will damage the seals and cause bearing failure if product contact occurs.
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Heavy Duty Airlocks are ideally suited for low- and medium- differential pressure systems, gravity or volumetric feeder discharge devices.
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WG, FS, and FR Airlocks are fabricated airlocks with flexible, wiper blade rotors, designed to be used for applications handling stringy or fibrous products and products that have a high shear rating. These valves are intended to be used in gravity flow applications limited to a pressure of 20” W.C. and 220° F.
All airlocks feature a variety of rotor configurations and right angle or parallel shaft drive arrangements based on specific application and process needs.
Airlock Brochure
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