Learn about the Different Types of Vacuum Pumps Helen Mayfield November 29, 2017 Business In a laboratory, a vacuum oven is a constant fixture. This is the device that will be used in extracting moisture from the ingredient or removing flammable solvents. Especially when you are into herbal oil making, you certainly need a reliable oven. For an oven to work, it must be generated by a vacuum pump. If there are more than one ovens, most of the time, they will be driven by a single vacuum pump that is, of course, capable of driving all of them. So as you can see, the vacuum pump has a huge responsibility and this is why if you are currently planning to buy one, you have to be meticulous in checking its features and power. Different types of vacuum pumps: The rotary vane This is usually preferred because of a number of factors: lower upfront cost; quite functional; smaller in size compared to its contemporaries. This type of vacuum pump needs oil to do its main functions such as: ensuring a tight seal; lubricating the working parts; removing heat so the rotors will be cooled. The diaphragm This is a dry pump does its function with the use of pulsing motion and opens as well as closes valve so facilitate the air. Unlike the first type, this does not need any oil at all. Because most of the time, this type is made of polytetrafluoroethylene, this becomes resistant to corrosives and at the same time, less susceptible to ruins that are caused by vapors. This might be expensive but because of the fact that it does not need oil, the running cost is less. Hybrid or combination Just as what the term suggests, this is the combination of the two types of vacuum pumps mentioned above. Because their functions also collide, you can expect that though this type uses oil, still, the maintenance is lesser than the ordinary RV pump. The oil here can last 10 times longer. This type of pump is good when you are dealing with freeze drying or volatile samples. Are you planning to buy a vacuum pump? If that is the case, you should check out the LeDab vacuum pumps. Yes, Ledab.ca is the provider of different laboratory equipment. The good thing about them is that they really seek out the international market just to make sure they can offer the best products to their customers.