Corrosive fluids may include acids, alkalis, methanol and solvents, which react to rubber valves, pistons and seals, so diaphragm valves or needle valves must be able to withstand corrosive fluids to choose applications.
PVC Coating Adhesive
Pistons and O-rings should be made of acid-resistant ultra-high molecular weight materials. Ultra-high molecular weight materials can also withstand the corrosiveness of alcohol and methanol. Polyether ether ketone materials are also suitable according to the specific corrosive strength. Pinch valves are usually used for acid and all solvent-based materials because its polyethylene pipe is disposable and the pinch valves are not rottable. Corroded wet chambers are therefore suitable for coating corrosive fluids. Adhesive fluids, such as cyanoacrylate, are solvent-based adhesives that are highly corrosive. Therefore, if the diaphragm valve is used, the material of its inner wall, piston and sealing ring must be ultra-high molecular weight material.
Filling silica gel
Abrasive fillers are usually pasty, which can improve the electrical and dielectric properties of materials. Not all fillers are abrasive. Therefore, it is necessary to confirm specific product characteristics to manufacturers or suppliers in order to avoid purchasing unnecessary rubber valves. Once it is determined to be used for coating corrosive fluids, such dispensing valves should be selected as It must be made of high hardness stainless steel; the seals must be of high strength and be able to withstand continuous wear and tear, and maintain the lowest possible consumption.