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Ball Valve Simple Structure, Good Sealing Performance
Oct 25, 2017

Ball valve in the use or installation period may be due to leakage, due to frequent use of the switch, or did not install as required, and many other reasons, resulting in the ball valve does not work, the following for you to explain the routine maintenance of the ball valve and fault Approach.

The daily maintenance method of the ball valve

1. Must first identify the ball valve, the downstream pipeline has been unloading pressure, in order to disassemble the decomposition operation.

2. Disassembly and reassembly must be careful to prevent the damaged parts of the sealing surface, especially non-metallic parts, remove the O-ring should use special tools.

3. Assembling the bolts on the ball valve flange must be symmetrical, step by step, evenly tightened.

4. Ball valve non-metallic parts should be immediately removed from the cleaning agent, not a long time soaking.

5. After cleaning to be washed after the wall cleaning agent volatile (can be used without cleaning detergent cloth) for assembly, but not for a long time shelved, otherwise it will rust, dust pollution.

6. The new parts of the ball valve also need to be cleaned before assembly.

7. Use grease to lubricate. Grease should be compatible with ball valve metal material, rubber parts, plastic parts and working medium. When the working medium is a gas, use special gas such as special 221. Apply a thin layer of grease to the surface of the seal mounting groove, apply a thin layer of grease to the rubber seal, apply a thin layer of grease to the sealing surface and friction surface of the valve stem.

8. Ball valve assembly should not allow metal debris, fiber, grease (except for the provisions of the use of) dust and other impurities, foreign body pollution, adhesion or stay in the surface of the parts or into the cavity.

 Ball valve is not only simple structure, good sealing performance, but also in a certain range of nominal diameter smaller, light weight, less material consumption, installation size is small, and the driving torque is small, easy to operate, easy to achieve fast opening and closing, More than 10 years to develop one of the fastest varieties of valves.

First, the main lines of oil and gas transportation, need to clean the pipeline, but also need to be buried in the ground, the choice of full diameter, all welded structure of the ball valve; buried in the ground, select the full diameter welded or flange connection ball valve ; Branch pipe, use flange connection, welding connection, full diameter or reduced diameter ball valve.

Second, the oil pipeline and storage equipment, the choice of flange connected ball valve.

Third, the city gas and natural gas pipeline, the choice of flange connection and internal thread connection of the floating ball valve.

Fourth, the metallurgical system in the oxygen pipeline system, should be selected after a strict off

five, low-temperature medium piping systems and devices, should use the valve with the low-temperature valve.

Six, the refining unit of the catalytic cracking unit piping system, the choice of lift rod ball valve.

Seven, the chemical system of acid and other corrosive media devices and piping systems, should use austenitic stainless steel, PTFE valve seat for the whole stainless steel ball valve.

Eight, metallurgical systems, power systems, petrochemical plants, urban heating systems in the high-temperature medium of the pipeline system or device, the choice of metal-to-metal sealed ball valve.

Nine, the need for flow adjustment, the choice of worm gear drive, pneumatic or electric with V-shaped opening of the adjustment ball valve.




Yuhuan Sinpo Valve Co.,LtdTel: +86-576-89903137