At present, fluorine

-butterfly butterfly valve, lining rubber
butterfly valve, as a kind of used to attain a pipeline system hige and
flow control

components, already in petroleum, chemical, metallurgy,
water and electricity in many areas get very widely. In the butterfly
valve technology already male know, its sealing form used more sealing
structure, sealing materials for rubber, ptfe etc. Due to

restrictions
of structure characteristics, does not adapt the high temperature
resistant, high pressure and corrosion

resistance, abrasion resistance,
etc. Existing a more advanced butterfly valve is triple eccentric metal
hard seal butterfly valve, the valve body and seat

for conjoined twins
components, heat-resistant, seating surface layer surfacing corrosion
resistant alloy material. Multi-layer

soft fold type sealing ring fixed
in the valve plate, this butterfly valve and traditional butterfly
valve, compared with high

temperature resistant no friction, open the
operation of the light, closing with transmission