The choice of whether to run our pnuematic cylinders hydraulically or pnuematically depends on the application. The operation of pnuematic cylinders tends to allow for faster motion, whereas hydraulic operation tends to allow for a very smooth and consistent motion, albeit at somewhat slower speeds. The service of pnuematic cylinders also has the advantage that in the event of a leak developing somewhere, only air would be escaping, (no liquid accumulates at the site of the leak as it does with hydraulic service). Periodic maintenance is also easier to perform on pnuematic cylinders, because they can easily be moved from the application to a work bench, without having to drain any hydraulic fluid. Here at Duramaster Cylinders we manufacture a vast array of NFPA Pnuematic Cylinders, options and accessories to fit the requirement of your application. Need hydraulic units versus pnuematic cylinders? No problem, our engineering team has over 60 years of combined experience and knowledge to help you with even the trickiest of applications. Call us today and let us know how we can assist you with your next pnuematic cylinders application.