The Maintenance Work When Valve Grease (1)

    Valve professional conservation work plays a vital role for the valve in the manufacturing operations service. Proper and orderly and effective maintenance will protect the valve. And it showed the normal functioning of the valve and extend valve life. Valve conservation seems to be simple, but it does not. There are often overlooked aspects in works.
    First, when valve greasing, it is often overlooked issue of the amount of grease. There are two kinds of situations: on the one hand, less grease, and speed up the sealing surface wear because of lack of lubricant; on the other hand, excessive grease is resulting in waste. The reason is that there is not accurate calculations according to valve type, on the capacity of different valve seals. Can be calculated seal capacity by valve size and type, then re-injected into the right amount of grease.
    Second, valve grease, often ignore the problem of stress. When operating in the grease, the grease pressure trough was changed regularly. Pressure is too low, seal leakage or failure; the pressure is too high, grease port plug, sealed within the lipid hardening or ring with the valve ball, valve plate locking. Usually grease pressure is too low, more grease injected into the valve chamber bottom, generally occurs in the small gate. while the grease pressure is too high, checking the grease mouth; on the other hand is a lipid hardening, to use the cleaning fluid, repeated to soften the failure sealing grease and grease into the new replacement. In addition, the seal type and sealing materials, also affected the grease pressure. Different forms have different sealing resin injection pressure, in general, seal grease pressure is higher than the soft seal.
    Third, when greasing valve, be attention to the valve is in the switch position. Valve maintenance in the open position when the general state of special circumstances, choose to close maintenance. Valve can not be any other open spaces. When valve in the conservation it must be turned off, ensure grease full of along the ring seal grooves. If it is on the open position, sealing grease directly fall into the flow channel or valve chamber, resulting in waste.
    Fourth, when valve greasing, they often ignore the grease effect. In grease operation, pressure, grease, switch position are normal. However, to ensure that the effect of valve grease, and sometimes need to open or close the valve, check on the lubricating effect, confirmed that the ball valve or gate valve lubricant uniform.