Oxygen specific pressure reducing valve

1. How to translatePurpose and main performance:
Voto brand oxygen pressure reducing valve is suitable for water, steam, and air medium pipelines. By adjusting the inlet pressure to a certain required outlet pressure, when the inlet pressure and flow rate change, the outlet pressure is automatically maintained within a certain range by the energy of the medium itself. However, the difference between the inlet pressure and the outlet pressure must be≥0.2MPA/CM.
Working principle and structure of oxygen pressure reducing valve:
When the pressure reducing valve leaves the factory, the regulating spring is in an uncompressed state,At this time, the main valve disc and the auxiliary valve disc are in a closed state,Rotate the adjusting screw clockwise during use,Compression adjustment spring,Move the membrane flap to the top and open the valve flap,The medium is composed ofaPass the hole through the valve seat tobThe hole enters above the piston,Under the action of medium pressure, the piston,Move downwards to push the main valve disc away from the main valve seat,Make the medium flow towards the back of the valve.At the same time, bycThe hole enters below the membrane,When the pressure behind the valve exceeds the set pressure,Push the diaphragm upward and compress the adjusting spring,The valve disc moves towards the closing direction accordingly,Reduce the flow of medium above the piston,The pressure also decreases accordingly,At this moment, the main valve disc is pushed up and down by the spring force of the main valve disc,Reduce the gap between the main valve disc and the main valve seat,The flow rate of the medium also decreases accordingly,Make the pressure behind the valve also decrease to a new equilibrium,On the contrary, when the pressure behind the valve is lower than the set pressure,The gap between the main valve disc and the main valve seat increases,The flow rate of the medium is also Increased accordingly,The pressure behind the valve also increases to reach a new equilibrium.
IIOperation and precautions:

1When using, first turn on the main switch of the steel cylinder, then rotate the pressure regulating screw of the low-pressure gauge clockwise to compress the main spring and drive the film, spring pad, and top rod to open the valve. The high-pressure gas imported in this way enters the low-pressure chamber through throttling and pressure reduction, and is then directed to the working system through the outlet.

2Rotate the adjusting screw to change the height of the valve opening, thereby adjusting the flow rate of high-pressure gas and achieving the desired pressure value.

3Pressure reducing valves are equipped with safety valves. It is a device that protects the pressure reducing valve and ensures its safe use, as well as a signal device for the failure of the pressure reducing valve. If the outlet pressure rises on its own and exceeds a certain allowable value due to valve gasket, valve damage, or other reasons, the safety valve will automatically open for exhaust.

IIIMain technical parameters and performance indicators:

4Flow coefficient:(Cv)

5. FiveMain component materials:

VIOverall dimensions(PN1.6-4.0)Unitmm

7Overall dimensions(PN6.4-16.0)Unitmm

8、 Installation instructions:

①For the convenience of operation and maintenance, the oxygen pressure reducing valve is generally installed upright on a horizontal pipeline, and special instructions are required for horizontal installation.
②During installation, attention should be paid to ensuring that the flow direction of the medium in the pipeline is consistent with the direction of the arrow shown on the oxygen pressure reducing valve.
③To prevent overpressure in the rear pressure, it should be located at least at the outlet of the valve4MInstall a safety valve at this location.

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