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NEED A PICK-UP? CONTACT US TODAY! COVID-19 STATEMENT Telephone Tel: 815-626-0388 Fax: 815-626-5366 Message m.me/RotaryAirlock Opening Hours Mon - Fri: 7am - 3:30pm CST MADE IN AMERICA: 1104 E 17th Street, Rock Falls, IL 61071

The industry's best. Made to be yours. Custom Solutions + Lowest Lifetime Cost Learn More Contact Us Every valve, built for you. ROTARY AIRLOCK SOLUTION (RAS)™ New | Drop-In Replacement See More Leaking Seals Is the inability to change sealing mechanisms while in operation due to their inconsistent lifespan, leading to the avoidance of maintenance? Our Solution Abrasion Is the premature wear due to vanes opening up clearances resulting in a shortened lifespan? Our Solution Lead-Time Are lead-times out of control? Down and in need of fast assistance? Our Solution Compliance Solutions Are there safety concerns related to NFPA compliance? Our Solution MAP Seal System Rotary Airlock's Proprietary & food safe seal system. Built with maintenance in mind this end cap configuration touts a piloted flange bearing and the strength of outboard bracing giving you plenty of clearance to access your seal system, both of which can be changed in-line with no need to pull the airlock. With this seal system, you'll never use any other seal again! MAP Seal AR400, AR500, RA-200 & TRI-ALLOY AR400, AR500, RA-200, and Tri-alloy are all abrasion-proof materials, each exhibiting exceptional hardness, wear resistance, and durability in the face of challenging environments. AR-400 AR-500 RA-200 TRI-ALLOY Abrsion Lead-Time Thanks to our rotary valves being American Made with American Steel and crafted by skilled American workers, we proudly maintain the industry's shortest lead times. Lead time Customized Solutions We provide tailored solutions, including Direct Drives, Inspection Doors, and Outboard Bearing Conversions, to meet your specific needs. Customized Solutions Seeking equipment standardization for streamlined training, maintenance, and reduced operational expenses? No other OEM offers Rotary Airlock's unique capabilities for fully standardizing ALL Rotary Valves, regardless of their original manufacturer. Rotary Airlock Standardizes ALL Valves Rotary Airlock specializes in tailored replacements, not just off-the-shelf options. We can standardize all your valves using a single bearing and seal style that perfectly suits your needs. YOUR PREMIER PERFORMANCE PACKA GES Industry Proven Solutions Discover More THE RV ADVANCED PACKA GE Industry Leading Configuration Shop now All Packages THE CR PRIME PACKA GE Corrosion's Met It's Match Shop now All Packages THE CLF BEARING Replace & Maintenance In-line Shop now THE MAP SEAL Replace In-line in < 10 min Shop now The right tools for the job INSPECTION DOORS DIRECT DRIVES NFPA 69 Available on ANY valve regardless of Make & Model Your valve, executed to meet or even exceed NFPA 69 Standards The Highest Safety & Maintenance Standard on ANY Make & Model Shop now Shop now Shop now PREMIUM STEELS We are the only OEM to offer Premium Steels ' Through-and-Through' , like AR400. Shop now PROPRIETARY COATINGS The most innovative and value-driven coatings for every industry. Shop now STANDARDIZE VALVES Standardize your entire fleet of rotary valves, reducing spare parts inventory, streamlining training, and simplifying maintenance. Shop now Anchor 1

LET'S UPGRADE YOUR VALVE ​ Our upgrades are designed SPECIFICALLY for you and your application. Saving you downtime, extending maintenance cycles, and making your processes safer. In other words, saving you money. ​ Find out how Rotary Airlock makes YOUR Master Class Valve. 01 01 TAKE YOUR OEM VALVE TO THE NEXT LEVEL Unlike the other OEMs who build your valve to fit the SYSTEM you have, Rotary Airlock has designed, engineered, tested, and implemented upgraded valves that are constructed SPECIFICALLY for your process. From 316L Stainless, AR500 wear plates, and 17-4 Shafting to name a few, we have YOUR upgrade, no matter your application or industry. ​ Here are just some of the industries we've worked with over the last 25 Years... AND MANY MORE... 02 THE INDUSTRY'S STRONGEST HOUSINGS 02 Unlike the other OEMs who mass cast their housing with cheap steel to save the bottom line, Rotary Airlock puts you the customer first and builds our airlocks right here in America from hardened steel. MILD STEEL This is the base material for almost all standard and non-corrosive applications. 304L Stainless Steel This is the base material for moderately corrosive applications and those designating a need for food-grade quality. 316L Stainless Steel This is the base material for severely corrosive applications and those designating a need for food-grade quality. Both AR400 & AR500 are used in the production of Housing Liners as well 03 03 YOUR ROTOR, THE RIGHT WAY At Rotary Airlock, we implement your EXACT configuration for your application. Every rotor configuration and material is individually analyzed, welded, inspected, and tested. From an Open Rotor w/Fixed vanes to a Closed Rotor w/Adjustable Tips, we work directly with you, your engineers, and your maintenance teams to ensure a Master Class configuration just for you. ROTOR CONFIGURATION OPEN ROTOR | FIXED VANES This rotor plan is standard across almost all AIRLOCK configurations. CLOSED ROTOR | FIXED VANES This rotor plan is standard across almost all gravity FEEDER configurations. CLOSED ROTOR | ADJUSTABLE TIPS This rotor plan is recommended by Rotary Airlock for SPECIFIC/CUSTOM configurations . *Not usually suggested across most industries but is available. Approximately 1-1 .5 degree vane angle that is recommended for applications with force filled pockets that helps aid in the separation of bulk material as it is introduced into the valve CANTED VANES | 1-1 .5 VANE CONFIGURATION Approximately 5-5 .5 degree vane angle that is not readily used but is available for specific/custom configurations. HELICAL VANES | 5-5 .5 VANE MATERIAL MILD STEEL This is the base material for almost all standard and non-corrosive applications. 304L Stainless Steel This is the base material for moderately corrosive applications and those designating a need for food-grade quality. 316L Stainless Steel This is the base material for severely corrosive application sand those designating a need for food-grade quality. AR400 | PROPRIETARY TO ROTARY AIRLOCK This is the base material that is specialty steel designed at the chemical level for improved wear resistance for specific applications. AR stands for Abrasion Resistant . AR500 | PROPRIETARY TO ROTARY AIRLOCK This is the base material that is specifically for applications requiring superior wear resistance and will ordinarily outlast other steel grades. AR500 steel is heat-treated to exhibit thorough-hardening, improved forming, and welding capabilities. SHAFT MATERIAL MILD STEEL This is the shaft material recommended for almost all standard, non-abrasive, and non-corrosive applications. 4140 This is the shaft material recommended for moderate to severely abrasive applications and is especially recommended for resistance to wear in seal areas . 304L Stainless Steel This is the shaft material recommended for moderately corrosive applications and those designating a need for food-grade quality. 316L Stainless Steel This is the shaft material recommended for severly corrosive applications and those designating a need for food-grade quality. 17-4 Stainless Steel | PROPRIETARY TO ROTARY AIRLOCK This is the shaft material recommended for applications requiring moderate to high torsion strength and moderate to severely c orrosive applications. 2205 Stainless stell | PROPRIETARY TO ROTARY AIRLOCK This is the shaft material recommended for applications requiring high to severe torsion strength and moderate to severely corrosive applications. BEVEL CONFIGURATION TIPS Bevel configurations are recommended for applications with a product that could cause binding or carry difficulty with releasing. The configuration that is recommended is based on the type of product within your application. *All configurations are available in Standard or Knife Edge Bevels. SIDES TIPS & SIDES BRACING CONFIGURATION Bracing is recommended on very specific applications. Most vane configurations do not require bracing but those applications with larger aggregate style product particles may find the added support from bracing to be beneficial. This is usually a specific/custom recommendation. 04 Webbing configurations provide a maximized sealing surface with the added protection for your seal area needed for your application thus combining the benefits of an open & closed rotor configuration. WEBBING CONFIGURATION 04 BEARINGS & SEALS Are you tired of failed bearings, blown seals, and an OEM who won't adapt your design to make your life easier and more efficient? That's exactly where Rotary Airlock steps in and delivers what you NEED instead of what we HAVE. We can upgrade your valves to a single bearing, single seal, and single end-cap configuration so your maintenance is the same no matter the Model. With some systems dropping maintenance times to less than 15 minutes! BEARING & SEAL UPGRADES PROPRIETARY TO ROTARY AIRLOCK | MAP SEAL UPGRADE This Out-Board seal upgrade uses a combination of loaded lip seals and double lip seals to create a unique barrier of protection from product migration. We also implement a purgeable bearing providing you a longer-lasting product you can maintain in-line. GPS Upgrade GLS Upgrade This In-Board seal upgrade extends the life of your airlock by protecting the bearing from foreign product and reduces product migration into the atmosphere. Take the possible 4-6 hours of downtime & extensive labor to replace an airlock seal, and cut it to less than 15 minutes! ​ With Rotary Airlocks Proprietary Mechanical Aerated Polymer Seal System (MAP Seal) there is absolutely ZERO need to pull an airlock or strip off any end-caps. ​ You save time, labor, and lost profits. Simply disengage the MAPS Housing Cap to access the seal directly and replace the MAP Seal in-line quickly & efficiently, getting you back up and running as fast as possible. BEARING OPTIONS FLANGE BEARING TAPERED ROLLER BEARING GREASABLE BEARING INSERT SEALED BEARING SEAL OPTIONS MAP SEAL | PROPRIETARY TO ROTARY AIRLOCK Take the possible 4-6 hours of downtime & extensive labor to replace an airlock seal, and cut it to less than 15 minutes!! With Rotary Airlocks Proprietary Mechanical Aerated Polymer Seal System (MAP Seal) there is absolutely ZERO need to pull an airlock or strip off any end-caps. You save time, labor, and lost profits. Simply disengage the MAPS Housing Cap to access the seal directly and replace the MAP Seal in-line quickly & efficiently, getting you back up and running as fast as possible. LIP SEAL The use of lip seals extends the life of your airlock by protecting the bearing from foreign product and reduces product migration into the atmosphere. This is accomplished with a Single, Double, or Loaded Lip Seal (Poly Pac). This can be customized to your individual application. ROPE PACKING We use Four types of packing depending on your application and compliance requirements. Standard (Yellow), High Temp (Graphite), Food Grade (White), and Custom (Colors Vary). 05 SPECIALIZED COATINGS & TIPPING 05 With the right coatings, our valves can handle anything from Highly Abrasive material to Sticky & Viscous products. With Rotary Airlock having the ONLY USDA Compliant coating too you can rest assured your sanitary or food processing is in the right hands. HARD CHROME We suggest this coating for moderately abrasive and mildly corrosive applications. (ex. Wheat screenings, some mild aggregates, ethanol production, etc...) Boasting a 62 - 69 Rockwell hardness rating. PROPRIETARY TO ROTARY AIRLOCK | TRI-ALLOY We suggest this coating for severely abrasive applications. (ex. Fly Ash, Calcium Carbonate, Talc, Some Gypsum, Asphalt, etc...) Boasting a 72 + Rockwell hardness rating. *Often used in conjunction with rotors tipped with Stellite #6 PROPRIETARY TO ROTARY AIRLOCK | ENB We suggest this USDA compliant lubricity coating for viscous/sticky product that can be applied to all internal surfaces to aid in product release. TIPPING Stellite #6 This tipping finish is an added option of strength and wear resistance for many mild, moderate, and severely abrasive applications ​ *Although not restricted to abrasive applications it is the most common recommendation. READY TO UPGRADE YOUR VALVE? GIVE US A CALL, WE WORK ON THEM ALL! (815) 626-0388

New RAS™ Valve SDO-133 12 (REPLACES SMOOT FT-12 4") REQUEST A QUOTE DOWNLOAD CUTSHEET New RAS™ Valve SDO-133 14 (REPLACES SMOOT FT-14 5") REQUEST A QUOTE DOWNLOAD CUTSHEET New RAS™ Valve SDO-133 16 (REPLACES SMOOT FT-16 6") REQUEST A QUOTE DOWNLOAD CUTSHEET Rebuilt Exchange Valve SMOOT FT-12 4" REQUEST A QUOTE Rebuilt Exchange Valve SMOOT FT-14 5" REQUEST A QUOTE Rebuilt Exchange Valve SMOOT FT-16 6" REQUEST A QUOTE DON'T SEE YOUR OEM or SIZE? GIVE US A CALL, WE WORK ON THEM ALL! (815) 626-0388

PACKAGES With the extraordinary team consisting of industry experts, engineers, control specialists, welders, and machinists we are able to diagnose, engineer, and execute a solution no matter the industry or application. We'll provide YOUR airlock solution. Guaranteed. FIND YOUR PACKAGE BY ANSWERING THE QUESTION BELOW What type of valve do you need? SANITARY SEMI-SANITARY NON-SANITARY YES NO Are you a part of the Chemical or Plastics Industry? YES NO How long does your valve run before going down? 1+ YEAR 6-12 MONTHS -6 MONTHS Do you produce ethanol ? YES NO How long does your valve currently run before going down? 2+ YEARS -2 YEARS What type of product are you operating through your valves? VISCOUS CORROSIVE ABRASIVE How corrosive is your product? MODERATELY (4+ pH) SEVERELY (-4 pH) Are you a part of the asphalt industry? YES NO 3+ YEARS 2-3 YEARS 1-2 YEARS 6-12 MONTHS -6 MONTHS Is your product Sticky, Viscous, or have trouble releasing? How long does your valve currently run before going down? Is Sticky? Chemical? Chemical how long? Ethanol? Ethanol how long? What type? Corrosive? Asphalt? How long?

CLICK & DRAG HERE "[The MAP Seal] is working great and both maintenance and the environmental team are very pleased with the design and the functionality of the seal! Not to mention that the ops manager was really impressed with the speed that you could get it back to us. Thank you and your team so much for the help! " -Rebecca B., RA Customer MAP SEAL™ SYSTEM BY ROTARY AIRLOCK LLC Your maintenance dream come true. Change Seals In-Line No Pulling Valves No Pulling Endcaps USDA Compliant SEE MAP SEAL™ SIZES SEE HOW TO CHANGE To play, press and hold the enter key. To stop, release the enter key. Rotary Airloc k's MA P Seal ™ System is engineered for industrial manufacturing applications based on years of experience in the field. Not only is it USDA compliant, but its durability has allowed customers to go from four to seven days of seal life with packing, to 28+ months and still running strong with a MA P Seal ™. HOVER HERE! Change Seals In-Line USDA Compliant Convenient Kits Save Inventory In less than 15 minutes, you can change our proprietary MAP Seal ™ and LPF Bearing Systems In-Line . ​ No need to pull an airlock means less downtime, less labor, and more product & profit for your bottom line. The MAP Seal™ System is the ONLY USDA compliant seal on the market for EVERY industry. ​ Whether it's food processing, ethanol production, or even pharmaceuticals, you'll know you have a seal designed just for you. There's always inventory to keep on hand, so we made convenient replacement kits so your inventory, doesn't eat into your budget. ​ With fast delivery and economical pricing, your MAP Seals ™ can be shipped quick or kept on hand without gouging your bottom line. THE ONLY SEAL YOU'LL EVER NEED ​ Any airlock or feeder valve make & model can be easily converted from mechanical packing to a MAP Seal. Because of its engineering, we can provide this seal at the best economical price for a quick return on your investment. THE DESIGN The MAP Seal System is a split seal that is machined for In-Line maintenance and all internal parts meet USDA standards for indirect food contact. All seal parts are designed split to make installations and replacements on your rotary valves a maintenance dream come true. ​ MADE IN THE U . S . A . ENGINEERING With seals, there's always inventory to keep on hand. We made it so that inventory, doesn't eat into your profits. ​ ​ Adjustable Clamp USDA Compliant Polymer Seal PTFE Polymer Carrier With fast delivery and economical pricing, your MAP seals can be shipped quickly or kept on hand without gouging your bottom line. It can be easily dis and re-assembled for install/replacement in under 15 minutes. Low-cost rebuild kits for fast & low-cost inventory requirements. The USDA grade design gives you reliable and continuous run-times! REPLACEMENT KITS MAP SEAL™ Replacement Kits MAP SEAL™ Designed to handle temps from -62 to 350° F the MAP Seal is perfect for any process or valve size. Discover the only seal you'll ever need by contacting a team member now. SIZES 2" 2.875" 4.5" Size is determined by the ID of the Seal. Sizes How To MAP SEAL™ All MAP Seals™ should be purged. Air that is 3 - 5 pounds of above line pressure is recommended. Air purging the seal creates a higher pressure inside the seal cavity which creates an air barrier that helps keep material inside the valve. With a MAP Seal™ l and air purge, you can forget about those costly nitrogen purge systems and those messy grease purges you have to manually purge over and over again, yuck. Contact us for more information on our Proprietary MAP Seal™ System and start saving your valves, your product, and your bottom line today! Purge Requirement SANITARY & FOOD GRADE USDA Compliant Rotary Airlock's MAP Seals™ is the ONLY USDA compliant seal on the market for rotary valves in EVERY industry. ​ Whether its food processing, ethanol production, or even pharmaceuticals, you'll know you have a seal designed just for you.

THE ROTARY AIRLOCK DIFFERENCE FARMING & AG EXCHANGE PROGRAM Your fields and harvest won’t wait. Take advantage of Rotary Airlock’s Exchange Program and reduce your downtime. We have hundreds of manufactured airlocks available. We welcome you to drop off your worn core and pick up your new unit at our facility all in one transaction. If travel is an issue, we’ll have a new unit shipped. 25 Years of Farming Innovation. Precision Machining Unmatched Engineering Master Class Materials REQUEST A QUOTE WHAT IS AN RAS™ VALVE? As for your core, we’ll make the shipping arrangements to pick it up at no cost to you. You can still purchase an airlock Ready-To-Ship right off our shelves or pick one up at our facility. ​ With Rotary Airlocks Exchange Program you're guaranteed to be up and running no matter your make or model. So purchase your exchange valve online today or give us a call at (815) 626-0388. HOW IT WORKS. . . We are here no matter how far you may be. If you want to make an in-person exchange you can call ahead and pull right up to our loading zone and our team will get your old valve unloaded and your new one set for your trip home. If you can't make it to our facility, no problem! We can ship your valve to you and we'll even take care of the details for picking up your old valve so you can focus on your business and leave the rest to us. JUST GIVE US A CALL... OUR TEAM MEMBER WILL GATHER SOME INFO FROM YOU... AND WE'LL SHIP YOUR VALVE TO YOU... THEN SIMPLY SWAP YOUR VALVES. WE'LL ARRANGE & PICK-UP YOUR OLD VALVE... WHEN WE RECIEVE IT, THAT'S IT! DON'T SEE YOUR OEM or SIZE? GIVE US A CALL, WE WORK ON THEM ALL! (815) 626-0388

New RAS™ Valve SDI-79 12x12 (REPLACES MEYER SD 12x12 4") REQUEST A QUOTE DOWNLOAD CUTSHEET New RAS™ Valve SDI-79 14x14 (REPLACES MEYER SD 14x14 5") REQUEST A QUOTE DOWNLOAD CUTSHEET Rebuilt Exchange Valve MEYER SD 12x12 4" REQUEST A QUOTE Rebuilt Exchange Valve MEYER SD 14x14 5" REQUEST A QUOTE DON'T SEE YOUR OEM or SIZE? GIVE US A CALL, WE WORK ON THEM ALL! (815) 626-0388

WHY DIRECT DRIVE? THE HIGHEST SAFETY STANDARD Chain driven valves carry open chain guards allowing hands, clothing, shoelaces, debris, etc to access moving chains, shafts, and sprockets. Those chains and sprockets require a lubricant too that must be applied from under the open chain guard, dangerously requiring hands and fingers close to moving parts at an unsafe & unstable angle. ​ With unfinished, jagged, & sharp metal edges (at an exact point where hands/fingers are required to work no less) and a required mounting table which increases materials, and therefore the valves, costs and maintenance issues, chain driven valves hold immediate safety hazards and higher costs. ​ Speaking of higher costs, they require you to store sprockets, chains, repair parts & tools, additional lubricants and more on hand. These all inflate and eat into your maintenance & inventory budget and ultimately, your bottom line. BREAK THE CHAIN! *see what we did there ;) Without extensive access to moving parts like chain driven valves have, Direct Drives eliminate possible hazard points and lowers the possibilities of injury during operation & maintenance. ​ With a direct drive, there is ZERO need for additional sprockets, chains, repair parts, and...well, you get the point. ​ There's no need to diminish your maintenance & inventory budget and keeps the costs from job site accidents out of the equation, ultimately, increasing your profits. CALL NOW! Click the image below to download the comparison .PDF now! WHY DIRECT DRIVE? Without extensive access to moving parts like chain driven valves have, Direct Drives eliminate possible hazard points and lowers the possibilities of injury during operation & maintenance. ​ With a direct drive, there is ZERO need for additional sprockets, chains, repair parts, and...well, you get the point. ​ There's no need to diminish your maintenance & inventory budget and keeps the costs from job site accidents out of the equation, ultimately, increasing your profits. HOW WE DO IT. We offer an exact drop-in replacement or we can convert your original OEM valve no matter the make & model. ​ We gather some very specific information about your valve and depending on your aforementioned choice above determines just what work we do. ​ Take a look at the slide-decks there to see the steps we take during each direct drive process. ​ *or download the .PDF of those slides below DROP-IN VALVE Download .PDF CONVERT OEM Download .PDF WHO WE'VE HELPED With 25 years of experience, we've done quite a bit of work converting valves with numerous clients. So we thought we'd talk about one in particular who has been and continues to be at the forefront of safety, reliability, and profitability. ​ Take a look at our Industry In-Depth post on Ajinomoto and their 'Hands-Off' campaign to save money and provide a safer experience for their teams. READ MORE

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ROTARY AIRLOCK, PROVIDING A WAY OUT. Let us guess, you've got a line down again, and even though you have multiple production lines that all use 10" rotary valves, you can't swap one or use a spare from any other line because...they are different OEMs and they don't fit. Really? They're all the same size though right? Wrong. Each OEM may carry a 10" valve but guess what? They specifically make it a different height so no other valve can take its place so you HAVE to go back to the original OEM for replacements & spares. Running up your inventory and getting pressure from the brass to lower your spending. You would if you could, right? ​ Rotary Airlock's Cross-Fit is the answer.​ ​ Rotary Airlock is the only manufacturer who can take 3 different OEM models with the same bore size and engineer, and successfully produce a replacement valve that fits all 3 heights. With a Rotary Airlock Model and pan head-mounted flange adapters, we can customize your airlocks to fit all of your production lines without running up your inventory and providing the convenience of swapping valves in down lines in a matter of minutes, or hours instead of days or weeks. We even provide the drive and speed switch in case your lines run at different RPM so you can adjust your valve to operate specifically for you and your application. ​ Break free of the stranglehold of the other OEMs and give us a call today at (815) 564-1729. With Rotary Airlock, it'll be YOUR airlock solution. Guaranteed. CALL NOW! ALL THIS INVENTORY JUST THIS Different valves, multiple bearings, additional packing sizes, that can't be swapped between OEMs, or... 1 Valve for Multiple OEMs | 1 Bearing Style | 1 Seal Solution CALL NOW!

for ANY Ethanol Application SDO-71 Valve (Replaces KICE Valves) for ANY Ethanol Application SDO-120 Valve (Replaces ROTOLOK Valves) ...ESPECIALLY ETHANOL A MASTER CLASS VALVE ALL ITS OWN If we've said it once, we've said it a thousand times, other OEMs build their valves to fit their SYSTEMS not to fit your APPLICATION. The ethanol industry gets hit with the brute honesty of this statement more than most. No matter what type of system you have, corrosion, failed seals, and broken braces are a constant struggle the Ethanol Industry faces. ​Some original valves see SO MUCH corrosion they may as well be a chute. These same valves are configured with product facing seals that CONSTANTLY fail, and fail, and fail. Why would you provide a valve, cast from the wrong material for the application, and with seals that are explicitly designed for industries other than ethanol? ​Let's not forget the chemical processes of ethanol being time and environment-sensitive, have NO ROOM for downtime. So why do some Ethanol valves have lead times that are MONTHS!, and that's for the same FAILED configuration! ​ ​ A Cut Above the Rest Rotary Airlock has specifically poured their efforts into alleviating the struggles the Ethanol industry faces. We have engineered, tested, and implemented hundreds of valves SPECIFICALLY for ethanol applications. ​ With all-new stainless steel rotors, stainless steel wear plates, and chrome housings, corrosion NEVER stands a chance. ​ We even replace those product facing seals and give you nothing short of the industry's Master Class outboard seal & flange bearing where both can be changed IN-LINE in less than 15 minutes. Rotary Airlock's Ethanol Package applied to your valve makes it truly a Master Class valve all it's own. So when it comes to expert knowledge, the right products, and correct application, there is only one choice, Rotary Airlock, especially when it comes to ethanol. STAINLESS STEEL ROTOR Corrosion doesn't stand a chance. Used in moderately corrosive applications and/or those designating a need for food-grade quality. ​ Corrosion-resistant 304L Stainless can be found throughout your entire valve but especially your rotor configuration. FULLY FABRICATED BRACES Fully fabricated, NEVER cast. Our valves are fully fabricated for strength and reliability and never cast. ​ So you won't have to worry about snapped braces, fractured housings, or cracked endcaps throwing your rotors our of spec. and destroying bearings. RAPID ACCESS ENDCAP Change seals & bearings, IN-LINE. In less than 15 minutes, you can change our proprietary MAP Seal and piloted flange bearing all In-Line. ​ No need to pull an airlock means less downtime, less labor, and more product & profit for your bottom line. MADE IN AMERICA Made right here in the heart of USA. We are an American company, providing for American families. ​ Located here in the heart of the USA, we know how important quality and reliability are, as well as lead times so quick we want them to have their own express lane.