Pilot piston gas pressure reducing valve

The hydraulic control valve is a hydraulic pressure control valve. The hydraulic control valve is composed of a main valve and its attached conduit, pilot valve, needle valve, ball valve, pressure reducing valve, slow closing check valve, flow control valve, pressure relief valve, Water power electric control valve, water pump control valve, etc. Filters should be installed before the hydraulic control valve, and the requirements for sewage discharge should be facilitated.

(200X type) Y42X-16 pilot-operated pressure reducing valve adopts the opening degree of the opening and closing member in the control valve body to adjust the flow rate of the medium, reduce the pressure of the medium, and adjust the opening degree of the opening and closing member by the action of the pressure behind the valve. , to maintain the post-valve pressure within a certain range, in the case of constant changes in the inlet pressure, keep the outlet pressure within the set range, and protect the subsequent life production equipment. This type of valve should generally be installed horizontally in the pipeline.

(200X type) Y42X-16 pilot type pressure reducing valve structure:

According to the structure, it can be divided into diaphragm type, spring diaphragm type, piston type, lever type and bellows type; the number of seat can be artificial single seat type and double seat type; according to the position of the valve flap, it can be divided into positive action type. The operation of the self-operated pressure reducing valve and the reaction type is controlled by the pressure behind the valve. When the pressure sensor detects that the valve pressure indication is increased, the valve opening degree of the pressure reducing valve is decreased; when the pressure reducing valve is detected, the pressure is decreased, and the opening degree of the pressure reducing valve is increased to meet the control requirement. Pilot Operated Pressure Reducing Valve - The decompression ratio of this valve must be somewhat higher than the system value; it should be able to respond to positive or negative control signals even at maximum or minimum flow. These valves should be selected for a useful control range, ie 20% to 80% of the maximum flow. Normally equal or have proportional characteristics. These types of valves inherently have the optimum flow characteristics and flow ranges required for proportional control. There are many types of pressure reducing valves, such as: pilot piston type pressure reducing valve, membrane type pressure reducing valve, bellows type pressure reducing valve, proportional pressure reducing valve, self-operated pressure reducing valve, direct acting self-operating pressure reducing valve. , back pressure regulating valve and so on. They are suitable for different working media. Different forms have different specific working principles. However, the general principle is that the pressure reducing valve reduces the inlet pressure to a certain required outlet pressure through the throttling of the opening and closing member, and keeps the outlet pressure stable. However, the general pressure reducing valve requires that the inlet and outlet pressure difference must be ≥0.2Mpa. 　　

(200X type) Y42X-16 pilot type pressure reducing valve Product introduction: Application and main performance: This 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 When there is a change in flow rate, the outlet pressure is automatically maintained within a certain range by the energy of the medium itself, but the difference between the inlet pressure and the outlet pressure must be ≥0.2MPA/CM.

(200X type) Y42X-16 pilot operated pressure reducing valve works

(200X type) Y42X-16 pilot-operated pressure reducing valve is shipped from the factory, the adjusting spring is in the uncompressed state. At this time, the main valve flap and the valve flap are closed. When using, turn the adjusting screw clockwise to compress the adjusting spring to make the membrane. The valve is moved to the top of the valve, and the medium passes through the valve seat to the b hole to enter the piston. Under the action of the medium pressure, the piston moves downward to push the main valve disc away from the main valve seat, so that the medium flows to the valve. The hole from the c enters the diaphragm. When the pressure behind the valve exceeds the set pressure, the diaphragm is pushed up to compress the adjustment spring, and the valve flap moves in the closing direction, so that the medium flowing into the piston is reduced, and the pressure is also followed. When the main valve flap is lowered, the main valve flap is pushed up and down by the main valve spring force, so that the gap between the main valve flap and the main valve seat is reduced, and the medium flow rate is also reduced, so that the pressure behind the valve is also reduced to the new one. The balance, when the post-valve pressure is lower than the set pressure, the gap between the main disc and the main valve seat increases, the medium flow rate also increases, so that the post-valve pressure also increases to reach a new balance.

Main dimensions