the valve is in the liquid system software, is used to control the orientation of the liquid, job stress, traffic was make wear tube and machine equipment within the material ( Liquid, gas, powder), Liquidity or stop and can control the traffic equipment, valve is a key control system of liquid transportation system software.

a, operation process are prepared ahead of time

actual valve before operation, application of heart read operation guide. Must clear gas flows into the process of operation, should pay attention to check the valve opening and closing. Check valve appearance, to see if the valve get damp, if you have get damp requires dry bath solution; If found other problems to properly handle, bring not common fault in practice. If it is to stop using 3 months above electric valve, to check before starting clutch, determine the handle after the manual type parts, check the motor insulation, and routes of the electrical equipment.

2, appropriate steps manual type valves

widely used on the manual type valve is the valve, its handle or lever, is made in accordance with the general human resources into account by the compressive strength and the need to turn off the power. And therefore cannot use leverage or long wrench to plate. Some people used to apply wrench, should be strict, open the valve should be stable vigor, prevent overexert, lead to open and close the valve and push should be stable, not impact. Some of the impact of opening and closing high pressure valve components already considered this kind of shock and general valve can not, etc.

when the valve is fully open, should handle inversion of a small amount, so sealed, external thread loose to prevent damage. For non-rising stem valves, remember to open a full and full closed when the valve stem, fully open to prevent collision top dead center. And to check whether normal full close. If the valves do fall off, or placing large dirt, valve core sealing between full close when the valve stem position needs to change. The valve surface or the destruction of valve handle.

the valve open sign: gate valves, butterfly valves, plug valves, valve stem wall on the top of the pipeline and parallel surface of channels, shows that the valve in full open position; When the valve lever to the left or to the right turn 90. Trench and vertical channel, the description in all turn off valve parts. Some gate valves, butterfly valves, plug valves with spanner and channel parallel surface as open, vertical is turned off. Tee, four-way valve actual operation should be open, turn off, phase identification. After the actual operation should choose theme activities under the handle.

three, relief valve operation steps right

the valve after water pressure test before installation, uniform. Relief valve operation for a long time, the actual operation staff should pay attention to check the safety valve, check the bypass valve entrances and exits, check the seal of the relief valve, using lever up wrench, safety Industrial Valves spacing open a period of time, drain in addition to dirt, check Industrial Valves of coordination.

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