If you use common thermosetting powder for spraying and your working time is not so long each day, the pure teflon material venturi is enough .

If you use special powder such as the metallic powder ,or your spraying working time is too lone each day,maybe the pure teflon venturi will be wear out quickly. So if  you want the venturis are more wear-resisting than teflon material,we recommend our high quality material-- teflon+ceramic,this material working life time is even double than the pure teflon material,because the ceramic fiber material hardness is more bigger.

After continuous improvement of the formula and long-term experimental demonstration, we finally choose an optimal ratio to mix the materials. This material has been used for a long time by a large number of customers and has become the preferred material for more customers. Although the price is higher than the average Teflon,but it is the best value . And it can save much time and power to change the venturis constantly.So if the teflon material can not meet your request,please choose the cermaic.