Can butterfly valves be used for hot water? In previous articles, we have introduced to you that butterfly valves are suitable for fresh water, sewage, sea water, salt water, steam, natural gas, food, pharmaceuticals, oil and other pipelines that require complete sealing, zero leakage in gas tests, high life expectancy and working temperatures from -10 degrees to 150 degrees.

Weather butterfly valve can be used in hot water pipeline or not, in fact, the key lies in the valve seat sealing surface material ofthe butterfly valve body that contacts with hot wate rdirectly. The hot water we talk about is generally water above 70℃.There will be no problem at all if you use hard seal butterfly valves at these temperatures.

But if it is a soft seal butterfly valve with a rubber sealed seat, can it be used for hot water?

If you search the internet for the answer, you will see that many do not recommend the use of soft seal butterfly valves in hot water. The reasonis thatthe rubber seat of a soft seal butterfly valve will age more rapidly if it is exposed to hot water for a long period of time. The sealing performance of the valve will be damaged, thus shortening the service life of the valve.

This statement is not a problem, the theoretical temperature range of rubber material is -20 ~ 150℃,but because of the various manufacturers produce rubber quality levels, inreal situations, this temperature range willnarrow down significantly in the hot water environment, of course.

However, the soft seal butterfly valve is not completely inadequate for hot water piping. High temperature resistant rubber can be used, which is much more effective and lasts longer.

And hard-sealed butterfly valves, ball valves, gate valves and globe valves can also be used instead.

Dervos is a leading valve manufacturer and provider of engineered products for different industries in China. If you’re looking for professional feasible solutions, check out our vast range of high-quality valves which covers gate valves, ball valves, butterfly valves, as well as other control valves and more. For more information regarding our high-quality products, contact us today!