The difference between rubber lined butterfly valve and rubber butterfly valve, the difference between rubber lined butterfly valve and plastic lined butterfly valve The rubber lining in rubber lined butterfly valve is to use high temperature to vulcanize rubber and valve body at high temperature, which has very high corrosion resistance. It is used to control some corrosive fluids with strong acidity and alkalinity.
The rubber butterfly valve is a butterfly valve whose seal is a rubber seal, generally called a valve seat, which is installed separately and integrated into one.
At normal room temperature, the wear resistance of natural soft rubber is much better than that of nitrile rubber, but their high temperature resistance is within the high limit of 80 degrees, and it is not suitable for use beyond that. The difference between full-lined butterfly valve and half-lined butterfly valve: 1. Half-lined butterfly valve means: the butterfly valve is not lined with rubber, and the place where the butterfly valve is connected to the valve body is lined with rubber;
2. Fully lined butterfly valve means that the butterfly plate of the butterfly valve and the parts connected to the valve body are lined with rubber.
The difference between rubber lined butterfly valve, fluorine lined butterfly valve and plastic lined butterfly valve: rubber lined butterfly valve and fluorine lined butterfly valve are only one kind of plastic lined butterfly valve.
The sealing materials in the rubber lined butterfly valve are: hard rubber NR applicable temperature: -10℃~85℃, soft rubber BR applicable temperature: -10℃~85℃, butyl rubber IIR applicable temperature: -10℃~120℃, chlorine Butadiene rubber CR applicable temperature: -10℃~105℃;
The sealing materials in the fluorine-lined butterfly valve are: polyperfluoroethylene FEP (F46) operating temperature: -85℃~150℃, polytetrachloroethylene PTFE (F4) operating temperature: -200℃~180℃, polytrifluoroethylene PCTEF (F3) Operating temperature: -195℃~120℃, polypropylene: RPP operating temperature: -14℃~80℃, PVC: rigid) PVC operating temperature: 0℃-55℃, polyvinylidene chloride PVDF ( F2) Operating temperature: -70℃~100℃, Polyolefin: PO Operating temperature: -58℃~80℃.