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.

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, before starting to examine the clutch, determine the rocker after manual type parts, then check the motor insulation, and routes of the electrical equipment.

manual type valve operation steps right

widely used on the manual type valve is the valve, its handle or a handle and is made in accordance with the general human resources into account by the compressive strength and the necessary closing force. And therefore cannot use leverage or long wrench to plate. Some people used to apply wrench, should be strict, open the Industrial Valves 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 close seat parts, 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 the seat area when full close needs to change. The valve surface or the destruction of valve handle.

the valve open sign: gate valves, butterfly valves, plug valves, the seat on the top of the wall pipe trench and secure channel parallel surface, shows that the valve in full open position; When the seat to the left or to the right turn 90. , pipeline and the safety of the channel, the vertical valve in full closed position. Some gate valves, butterfly valves, plug valves with spanner and secure channel parallel surface is opened, the vertical to shut down. Tee, four-way valve operation by opening, closing, should change phase identification. After the actual operation should choose theme activities under the rocker.

the relief of the right steps

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 and inspection, to bypass valve entrance and check the valve seal, use lever up wrench, safety valve spacing open a period of time, drain in addition to dirt, check valve of coordination.

trap the proper steps

it is very easy to trap water stains dirt blocking valves. When open, open first flush valve, washing line. A by-pass valve tube, can open the inlet valve for transient cleaning. No cleaning pipe and by-pass valve trap, can tear open come down to trap, open disconnect after cleaning, and then shut off valves, mount trap, then open the cut-off valve, open the drain valve.

appropriate operation steps of the pressure reducing valve

pressure reducing valve open before, should open the inlet valve or flush valve, dirt, clean pipeline pipe after washing clean, close the inlet valve and flush valve, then open valve. There is trap, before some of the steam pressure reducing valve must open, micro pressure reducing valve open again after the cut-off valve, cut-off valve opens before the pressure reducing valve, watching the barometer around before and after the pressure reducing valve, adjust the pressure reducing valve adjusting screw, the valve after pressure do booking value, then gradually open after the cut-off valve, pressure reducing valve calibration work pressure after the valve, until satisfactory. Fixed good adjustment screw, cover and helmets.

if a common fault or to repair the relief valve, to gradually open the inlet valve, and close the valve before the cut-off valve, handmade probably adjust the inlet Industrial Valves, the pressure reducing valve after pressure stable based around book value and then close the valve after conversion and repair, recover again.

check valve of the appropriate steps

in order to prevent the non-return valve closing moment in high shock, the valve must be shut down quickly, and avoid large flow rate, the flow rate is produced when the valve is closed when all of a sudden impact because of the pressure of work. Therefore, the closing of the valve rate should be properly matched with smooth material attenuation coefficient rate.

if well material rate change category is very large, the water flow will not be able to drive off smoothly terminated. Under such conditions, close a fitness can be in the position on the scheduling of a certain category with hydraulic damper to suppress in many aspects. Close a rapid vibration, can make the valve theme activities damage too fast, causing valve too early now. If material is pulsating flow of drinks, close a rapid vibration caused by extremely material oscillation, if anyone have this kind of situation, non-return valve should be installed in the material oscillation small area.

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