Use steam pressure pneumatic valve installed the note

High voltage safety of pneumatic valve is through the opening and closing the throttle, reduced the inlet pressure to a certain need outlet pressure, and make the outlet pressure remained stable. Steam pressure pneumatic valve factory, adjust the spring is in the uncompressed state, where the main pneumatic disc and pay a pneumatic valve closed, when used according to clockwise to adjust screw, compression adjusting spring, make the membrane valve open move pay pneumatic disc, medium by a hole through the pneumatic seat to pay b above hole into the piston, the piston under the action of medium pressure, move down the drive main pneumatic disc off main pneumatic seat, after the media flow pneumatic valve. By c below the hole into the diaphragm, at the same time when pressure exceeds the setting after the pneumatic valve and push the diaphragm up regulating spring compression, pay the pneumatic valve to close the direction, then reduce flow into the piston at the top of the medium, pressure drops, also at this time of the pneumatic valve in the main pneumatic disc spring force to push down, make the main pneumatic valve and the main gap of pneumatic valve seat is reduced, the medium flow also is less, the pneumatic valve after pressure drops to a new equilibrium, whereas when pressure is lower than the setting pressure after the pneumatic valve, advocate with the main pneumatic pneumatic valve seat valve clearance increases, the medium flow rate also will increase, make the pneumatic valve pressure also increased after reaching a new equilibrium.

steam pressure pneumatic valve shall generally be installed in the pipeline. Steam pressure pneumatic regulating pneumatic valve pneumatic valve is a necessary accessories, main effect is to air pressure decompression and stability to a fixed value, in order to adjust the pneumatic valve to obtain stable gas source power for regulating control.

the steam pressure of the pneumatic valve after work by the pneumatic valve to control the pressure. When pressure sensor detected instruction pneumatic valve pressure, reduced pressure pneumatic valve pneumatic valve opening decreased; When they tested the vacuum pneumatic valve after pressure decreases, and reduced pressure pneumatic valve pneumatic valve opening, in order to meet the control requirements.

steam pressure pneumatic valve - — The pneumatic valve decompression ratio must be higher than the system to a certain extent value; Even in the maximum or minimum flow, it should also be able to respond to positive action and reaction control signal. The pneumatic control valve should be useful for range selection, namely the maximum flow of 20% to 80%. Normal is geometric model or geometric characteristics. These types of pneumatic valve itself with proportional control required by the best flow characteristics and flow range.

steam pressure pneumatic valve is suitable for water, steam, air medium pipeline, by adjusting the lower the inlet pressure to a needed discharge pressure, when the inlet pressure and flux change, by the energy of the medium itself automatically maintain export pressure within a certain range, but the difference between the inlet pressure and outlet pressure must be zero or more. 2 mpa/CM

steam pressure pneumatic valve installation notice:

Y43H - vacuum pneumatic valve 16, with 0. 05 ~ 0. 4 mpa, Y43H - 25, equipped with 1 ~ 1. 6 mpa, Y43H - 40, equipped with 1 ~ 1. 6 mpa, 1。 6 to 2. 5 mpa adjusting spring, Y43H - 64, equipped with 1 ~ 3 mpa adjusting spring, the factory in the pneumatic valve is equipped with 0. 1 ~ 1 mpa, spring, and the rest with the pneumatic valve attached, users can according to the amount of export pressure value options.

steam under the spring loaded safety before pneumatic valve must rinse clean on piping system. In case of welding slag, scale of stolen goods such as into the pneumatic valve, pneumatic valve normal work.

steam pressure pneumatic valve should be installed in the place where is convenient for operation and maintenance, erect and must be installed in horizontal pipe runs, we should pay attention to the medium inside the pipeline flow and the pneumatic direction indicated by the arrows on the valve body, do not reverse.

the reduced pressure pneumatic valve when installed, should open the by-pass pipe cut-off pneumatic valve, remove condensate in the pipeline, and a mixture of soda, produce water there phenomenon when the reduced pressure pneumatic valve open in case damage reduced pressure pneumatic valve, when no abnormal phenomenon, slowly turn adjusting screw clockwise, the outlet pressure to set the desired pressure ( The table after pneumatic valve pressure shall prevail) , after the adjustment, the lock nut back tightly, screw on guard.

the reduced pressure pneumatic valve should be installed before the filter, sundry into vacuum pneumatic valve, in case the medium influence its performance.

installation should be a straight pipe before and after decompression, pneumatic valve, pneumatic valve in front of the straight pipe length is about 600 mm, pneumatic valve after the straight pipe length is about 1000 mm.

general vacuum pneumatic valves require import and export pressure difference must be zero or more. 2Mpa。

the reduced pressure pneumatic valve usually have (~ DN100 a variety of specifications, such as pneumatic valve before and after the work stress respectively & lt; 1 mpa and 0. 1 to 0. 5 mpa, regulating range of error is plus or minus 5% ~ 10%