Valve Conservation Appears to Be Simple, Does Not

Pre-production in the welding of the valve before and after the commissioning of the professional conservation work for the valve to serve production operations play a crucial role in the proper and orderly and effective maintenance will protect the valve, the valve to function properly and extend valve life. Valve conservation appears to be simple, does not. Work, often neglected aspect. First, the resin injection valves, it is often overlooked the issue of fat injection. Note lipid refueling machine, the operators choose to link valves and injection form of fat, the fat injection operation. There are two kinds of situations: on the one hand, less fat injection fat injection inadequate sealing surface due to the lack of lubricant and to speed up the wear and tear. Note on the other hand, excess fat, resulting in waste. Is not in accordance with the type of types of valves, valve seals of different capacity to carry out accurate calculations. Can be calculated valve size and type of seal capacity, and then injected into a reasonable amount of grease. Second, fat injection valve when the pressure often overlooked. Operation in injection resin, the resin injection pressure peak and valley was changed regularly. Pressure is too low, seal leakage or failure, the pressure is too high, fat injection inlets, inside the lipid hardening or sealing ring and the ball valve, valve plate locked. Resin injection pressure is usually too low, more grease into the cavity at the bottom of the inflow valve, generally occurs in the small valve. The resin injection pressure is too high, on the one hand, fat injection nozzle check, in the case of pore blocking fat replacement to identify the situation; on the other hand, lipid-hardening, it is necessary to use the cleaning fluid, repeated failure to soften the seal fat, and inject new grease replacement. In addition, the sealing material type and sealing, resin injection pressure also affect the different forms have different sealing resin injection pressure, generally hard-sealed resin injection pressure is higher than the soft seal. Third, fat injection valve, the valve in the switch attention to the issue of spaces. Maintenance when the ball valve in the open spaces in general, and special circumstances to choose to close maintenance. All other valves can not be hauled before the opening of spaces. When the valve in the conservation status must be closed to ensure that the grease seal along the trenches filled with ring, if the open position, sealing resin flow directly into the cavity or valve, resulting in waste. Fourthly, fat injection valves often ignore the effect of the issue of fat injection. Resin injection pressure operation, fat injection, all the normal switch position. However, in order to ensure that the effect of resin injection valve, and sometimes need to open or close the valve on the lubricating effect of the inspection, confirmed that the ball valve or gate valve lubrication uniform surface. Source: Valvehardware