Vane pumps come in handy when you want to handle light solvents, liquefied petroleum gas or any other substance used in the lab. Buying such a pump can be a daunting task for beginners because they don't have any clues about what they should look for in the vane pump. If you are an unsuspecting shopper, it's hard not to buy the wrong vane pump. This is because there are so many brands and...