oil plate and cover the leak of 01

:

1. Aluminum die casting forging quality is not high, the oil plate and cover the body with sand holes, loose organization, flash and other defects

2. Days cold crack;

3。 Poor welding welding, has the flash, not welding welding, in-situ stress cracks and other defects;

4。 Cast iron valve suspended after collision damage.

maintenance mode:

1. Improve the quality of forging, and before the installation of rigid in accordance with the regulations to carry out the compression strength experiment;

2。 The average temperature in 0 & deg; And 0 & deg; Valves, the following should be carried out heat insulation or heat, discontinuation of the valve should be clear water

3. Composed of welding welding oil plate and cover welding, should be undertaken according to the relevant welding welding procedures, welding flaw detection and the compressive strength should also be carried out after experiment;

4。 Put hanging Industrial Valves is strictly forbidden, not allowed to use the iron hammer and nonmetallic material valve, the installation of large diameter valves should be racks. Filler used wrong, no corrosion resistant material, not valves, high pressure or vacuum pump, high temperature or cryogenic application; Packing installation is wrong, to save has the poor little generation of large, spiral winding connection head, twist the shortcomings such as loose; Packing number of turns is insufficient, gland not card tight; Gland damage, anchor bolt, and other artifacts, gland can't lock; Practice is not good, too hard, etc. ; Gland, and the clearance between the valve stem is too small or too large, lead to stem damage, damage of the packing. Should be used according to the condition of working standard packing materials and form; According to the requirements of appropriate installation packing, packing should be placed by circle card tight, connecting head should be 45 ℃ to 30 ℃ or; Life is too long, embrittlement, damaged packing shall be immediately moved around; Stem should be school straight after bending, damage and repair, the serious damage shall be immediately moved around; Packing shall be installed in accordance with the specified number of turns and gland should be symmetry, symmetry to tight, torque gap above the pressing sleeve should be 5 mm; Damaged gland, artifacts, anchor bolt and he shall promptly repair or conversion; Should follow the operating rules, in addition to the collision type handle, with average normal energy actual operation; Should be symmetrical symmetry tightened gland anchor bolt, gland and stem gap is too small, as far as possible to expand its space; Gland and stem gap is too big, should be moved around.

Finding a reliable solution for the double flanged gate valve os & y valve fire protection not only supports operation of the entire system but also enhance the beauty of your workplace.
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