Butterfly valve for FGD system

Application

In thermal power plant, wet FGD by limestone-gypsum process is widely used to reduce air pollution with an efficiency up to 95% or higher. For a butterfly valve used for FGD system, it must withstand not only corrosion caused by chloride, oxide, acid, but also abrasion caused by particles contained in slurry. So the key to extend FGD butterfly valve service life is to choose the correct material and structure.

Specification

Standard: API609, API6D, GB/T 12238, GB/T 26144, HG3704
Size: DN50~DN1200
Pressure: PN10, PN16
Temperature: -29℃~180℃
Valve body material: carbon steel, cast iron, stainless steel
Valve disc material: WCB, 304, 316L, 2507, SAF2205, DIN1.4529, C-276, etc.
Connection: flange, wafer, lugged
Operation: manual, pneumatic, electric,

Features

• Only 2 wetted parts by slurry, namely seat and disc. To improve working performance in corrosive and abrasive environment, valve seat is lined with PTFE, UPE, EPDM rubber, while valve disc is made of 316L, C-276, DIN1.4529, SAF2205, etc.
• Epoxy coating for valve body made of cast iron.
• Resilient seated structure to ensure tight closure.
• Replaceable valve seat design.
• Reasonable design, compact structure.
• Center line butterfly valve.