1. The seal diaphragm is made of F46 or PFA, the number of folds is ≥120000 times, and the corrosion resistance is equivalent to F4.
2. Adopting the screw lifting structure, the opening and closing force is huge and the stability is good.

Material       Medium temperature℃MaterialMedium temperature℃
PVC-C-20℃~+95℃PVC-U-5℃~+45℃
FRPP-20℃~+120℃PPH-20℃~+110℃
PVDF40℃~+150℃