◆Fluorine-lined butterfly valve adopts split-type body, and the joint face of upper and lower body has
retaining nest for ensuring the shaft hole on body in concentricity.
◆The internal surface of channel of valve body of fluorine-lined butterfly valve and the external surface of
disc are smooth, which make it realize low fluid resistance, high CV and large capacity.
◆The disc and stem of fluorine-lined butterfly valve are in an integral structure, which makes the disc
centered with greater precision. Since the disc at both sides of rotating shaft bear approximately equal
but reverse acting forces from medium, which makes the opening/closing and operating easy with
small torque needed.
◆There is a stress slot on the stem of fluorine-lined butterfly valve as overload protection. It is designed
for blow-out proof, safe and reliable.
◆The lining of seat of rubber-lined butterfly valve adopts mould pressing on the body. There is no
leakage between seat and body, which avoids the displacement of seat under pressure, and also
reduces the rubber shrinkage, and improves the precision of sealing face of the seat, and ensures
sealing property and operating torque of the product.
◆Type of Valve: centerline fluorine-lined (rubber-lined) butterfly valve
◆Pressure Rating: ANSI Class125，150
◆Trim Material: WCB+FEP(PTFE)；CF8(304)+FEP(PTFE)；
WCB/CF8/CF8M+EDPM/NBR, etc; 304, 316
fluorine-lined butterfly valve for -40～+180℃
rubber-lined butterfly valve for -20～+150℃
◆Leakage Class: ANSI Class V, Class VI
◆End Connections: wafer, flanged,
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