Conservation at the aggregate (outside leakage of marine valves, the contrast at the aggregate is the largest) Reasons: 1. The selection of aggregates is not suitable, not resistant to medium erosion, not resistant to low pressure or vacuum, low temperature or high temperature use of marine valves; 2. The aggregate device is not suitable, and it has the disadvantages of replacing the big with the small, the electric drill around the joint is not good, and the upper is tight and the lower is loose; 4. Aggregate has aged beyond its service life and lost its inertia. The precision of the valve stem is not high, and there are disadvantages such as meandering, erosion, wear and so on. 5. There are more than one turns of aggregate, Fluid Flow Control Valve and the gland is not pressed tightly; 5. Gland, nut, and other components are protected, so that the gland can not be pressed tightly;
7. The operation is not appropriate, and the force is too hard; 7. The gland is inclined, and the space between the gland and the valve stem is too small or too large, so that the valve stem is worn and the aggregate is protected. Protection measures: 1. The materials and types of aggregates should be selected according to the working conditions; 2. 2. To install the aggregate accurately according to the relevant rules, the pcking should be placed and pressed one by one, and the joint should be at 30°C or 45°C; 3. 3. Aggregates that have been used for too long, aged and protected should be replaced in time; 4. After the valve stem is meandering and worn, it should be straightened and repaired, and if the protection is important, it should be replaced in time;
5. The aggregate should be installed according to the regular number of turns, the gland should be tightened evenly and evenly, and the pressure sleeve should have a pre-tightening clearance above 5mm; 7. The protective gland, nut and other components should be repaired or replaced in time; 7. The operation regulations should be abided by, except for the impact handwheel, which should be operated with uniform force; 7. Tighten the gland nuts evenly. If the gap between the gland and the valve stem is too small, the gap should be appropriately increased; if the gap between the gland and the valve stem is too large, it should be replaced.
4. Leakage of open parts due to loose parts: Reasons: 1. The operation is not good, so that the open parts are stuck or exceed the top dead center, and the protection of the connection is broken; 2. The connection of the open parts is not strong, loose and loose; 3. Select the material of the connection parts No for, there is no erosion of the medium and wear of the machine. Protection methods: 1. Accurate operation, the opening of the marine valve is not too strong, and the closed marine valve is not able to exceed the top dead center. After the marine valve is fully opened, the handwheel should be reversed a little; 2. The connection between the opening piece and the valve stem should be strong, There should be a stopper at the fingerprint connection; 3. The fastener used for the connection between the opening part and the valve stem should be resistant to the erosion of the medium, and have certain mechanical strength and wear resistance.
Tags: custom brass valve, radiator control valve, wholesale Brass Pipe Fitting
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