electric fluorine-butterfly regulator fluorine plastic or plastic lining corrosion resistant valves and pipe fittings, special properties, due to its inherent in such aspects as product installation, maintenance and maintenance has the following features: 1. or fitting flange cover plate can't open it, unless the preparation and pipeline connection, otherwise PTFE flange surface may be caused by temperature difference, foreign bodies, knock against scratches or distortion and seal, such as moving cover board for inspection need, also must stay speed will cover plate to reset after inspection, in order to protect the PTFE flange surface. 2. Fluorine plastic or plastic lined valves and pipe fittings and pipe connection, the general is not in a separate use gaskets, but with dissimilar materials ( The metal surface, etc. ) Flange connect, should adopt appropriate gaskets, PTFE in order to protect the flange surface 3. In the system to use products, such as leakage in compete, shall, first of all, the system temperature down to room temperature, then find out the reason, for repair. 4. Don't allow any high temperature welding work on valves and pipe fittings, so as not to cause permanent damage to the lining layer. 5. Installation is flange nut should be according to the diagonal ( Symmetry) Uniform tightening in turn and with appropriate moment: ( 1) Flange sealing surface leakage and leakage location nut has been lock, at this time should be relaxed leak location nut, half a circle again at the same moment will be on the side to lock. ( 2) These methods are still not stop leakage, PTFE flange surface shall be checked whether there are concave and convex indentation, scratch, which can be spun yarn paper, cloth leveling to reconnect. 6. Valves and fittings should be stored in dry and ventilated room, do not stack. 7. The long-term storage of the valve seal should raise separation condition, avoid seal compression permanent deformation for a long time, affect the sealing performance and service life. 8. Manual valve operation, does not allow the other lever strength to force the valve open and close. 9. There is a requirement for directional Industrial Valves installation is to pay attention to the flow of medium shall be indicated by the arrows to shun body less, and ensure the operation, maintenance is convenient. 10. After repair of the valve before use according to the related standard until they have passed the test installation.

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