Varem Bladder Pressure Tanks are manufactured by Varem S.p.a, a company based in Italy that is engaged in the design, development and manufacture of bladder tanks. Varem bladder pressure tanks are available 8 to 500 liter capacities. Small on Size, Big On Performance: Varem pressure tanks are 99% efficient. Conventional pressure tanks use only 25% of the water inside them. While a 42 gallon tank might look impressive, in reality, only approximately 12 gallons are used (“draw down”). With Varem pressure tanks, 99% of the water is used. Thus, you can get rid of the excess size needed by conventional pressure tanks. This allows Varem tanks to deliver the same performance while reducing it’s size. Easy to Replace Bladder Varem pressure tanks feature a replaceable butyl bladder. While bladder tearing is rare, Varem pressure tanks are designed to make it simple to reinstall the bladder when needed. Just unscrew the flange and replace.