Pasilac Heat Exchanger,Pasilac Gasket Heat Exchanger,Pasilac Gaskets,Pasilac Phe Gaskets Dongguan Runfengda F&M Co., Ltd , https://www.runfengdaphe.com
Leakage at the valve packing approach
Reason: 1, the choice of filler, impatient medium corrosion, impatience valve high pressure or vacuum, high temperature or low temperature use; 2, packing is not installed, there is a small generation, poor spiral wound joints, tighten loose Defects; 3, the filler over the service life, aging, loss of elasticity 4, stem precision is not high, there are bending, corrosion, wear and other defects 5, insufficient packing ring, gland is not compressed; 5, improper operation, excessive force, etc .; 6, gland skew, gland and the gap between the valve stem is too small or too large, resulting in stem wear and tear, packing damage. Prevention, removal methods: 1, should be selected according to the conditions of the filler material and type; 2, according to the correct installation of packing, packing should be pressed circle by ring, the joint should be 30 ℃ or 45 ℃; 3, 4, the valve stem bending, wear should be straightened, repair, serious damage should be promptly replaced; 5, the filler should be installed according to the number of laps, gland to deal with Said uniform tight, pressure sleeve should be more than 5mm preload gap; 6, damaged gland, bolts and other parts, should be promptly repaired or replaced; 7, should comply with operating procedures, in addition to the impact of the hand wheel, Uniform normal speed operation; 8, gland bolts should be evenly and symmetrically tightened, gland and stem clearance is too small, should be appropriate to increase its clearance; gland and stem clearance is too large, should be replaced.