• The YFL fluorine lined control valve has double sealing structure with PTFE bellows seal and packing seal;
• When the PTFE bellows seal fail, the packing seal is the secondary seal;
• Compact structure, small volume, light in weight, excellent corrosion resistance;
• Equipped with multi-spring pneumatic reinforce actuator makes the valve realize the conversion of normal close and normal open on site easily, the springs can be effectively protected from the corrosion to prolong the service life of actuator;
• The actuator and the intelligent valve positioner are connected pipeless to strengthen the shock resistance, stability and precision adjustment, to meet precise control of the working conditions;
• The YFL jacketed insulation control valve fills the heat medium into the gap between valve body and metal jacket to keep thermal insulation and prevent fluid crystallization occurring and increasing of viscosity, which due to the temperature is decreasing.

Main materials:

• Body: WCB CF8 CF8M CF3M WCB/CF8 lined F46
• Plug: 304 316 316L 304/316/316L+stellite WCB/CF8 lined F46
• Bellow: PTFE
• Packing: PTFE
• Guide sleeve: WCB/CF8 lined F46
• Stem materials: 304  

Technical parameter:

• Size: 1/2"～8" (DN15～200)
• Pressure rating: Class 150 (PN10～PN16)
• Flow characteristic: Equal Percentage Linear
• Regulating ratio: 30:1
• Seal leakage: ANSI IV V VI
• Temperature: -30—200℃
• Thermal Insulating Medium: Vapor pressure≤1.0MPa Temperature≤350℃ Steam pipe≤DN25
• End connection: Flanged
• Flanged ends: ASME B16.5 EN1092
• Operation: Air to open/Air to close pneumatic electric