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Forged steel low temperature valve often ignores the pressure problem, in the grease operation, the grease pressure is regulated semi-free floating ball steam trap in the law of the peak valley change. The pressure is too low, the seal leaks or the safety valve fails, the pressure is too high, the grease injection port valve manufacturer is blocked, the grease in the seal is hardened or the seal ring is locked with the valve ball and valve plate.

Usually when the grease injection pressure is too low, the injected grease flows into the bottom of the valve chamber, generally occurring in small gate valves. While the pressure of the grease flow control valve is too high, on the one hand, check the insulation gate valve check the grease nozzle, if the grease remote control float ball valve hole is blocked, the spring is closed with the spanner full open condition for replacement; On the other hand, the plunger globe valve is lipid hardening, to use cleaning fluid, repeatedly soften the failed seal grease, and inject new grease replacement. In addition, seal type and seal material, also affect the injection pressure, different seal forms have different injection pressure, in general, the hard seal injection pressure is higher than the soft seal.