What is the impact of thermal insulation pneumatic ball valve on equipment operation? If the valve on the thermal pipeline is not well insulated, it may cause leakage due to uneven thermal expansion and contraction during multiple opening and closing. In winter in cold regions, once the uninsulated valve is closed, the freezing speed of the valve is much higher than that of the valve with good insulation. If the time interval between closing and opening is short, the valve with good insulation will always be closed and opened under hot conditions; However, valves with poor insulation or without insulation may be closed at high temperature and opened at low temperature. High temperature thermal alternation makes valve parts in contact with or close to the medium subject to alternating stress, which aggravates the fatigue aging of valve parts and shortens the service life of the valve. At the same time, the thermal alternation of the medium will also cause the valve seat and guide sleeve (interference fit or threaded connection) to become loose, thus losing the sealing effect.

3. The PROMAG series electromagnetic flowmeter is required to be installed with a protection level of IP67 (dust-proof and waterlogging proof) or IP68 (dust-proof and diving proof). In the sewage plant, most of the large diameter flowmeter sensors are installed underground, so it is recommended to choose IP68 (dust-proof and anti diving level). Generally, the electromagnetic flowmeter has the following requirements for the installation site: