The limestone gypsum wet method is used in the desulfurization system. The medium of the limestone slurry system will be highly corrosive after desulfurization. The requirements for the desulfurization valve are that it can not only resist chloride, oxide, acid, but also harsh particle wear and slurry scouring. There are also special requirements for valve actuators. Polo desulfurization special valve is designed and manufactured for the special requirements of desulfurization system. After long-term use, the valves made of the following materials can meet the service conditions.

Desulfurization special valves are divided into manual, electric and pneumatic in terms of execution mode Electric butterfly valve: pneumatic butterfly valve:

Specification of desulfurization butterfly valve

Nominal diameter: Dn40 － 1200mm (of which Dn40 － 500mm adopts wafer structure and DN600 － 1200mm adopts flange connection structure

Nominal pressure: 1.0MPa, 1.6Mpa

Shell strength test: 1.5 times the working pressure

Working temperature: － 20 －－ 80 ℃

Materials of main parts of desulfurization butterfly valve

The valve body is made of high-performance ductile iron ggg40

The butterfly plate is made of high-quality alloy low carbon steel 1.4529 or 1.4469

The valve shaft is made of high-quality stainless steel 2Cr13

Valve seat rubber sealing ring EPDM