From the other points of this valve, it can be said that if the plate valve or ball valve is not completely open or closed, the ducted part and the seat will not be damaged, as a result of using the plate valve, there are many advantages.
Plate valve is one of the parts that is widely used in oil, petrochemical and gas.
Plate valves are used to pass different liquids and gases.
The construction of plate valves is designed as a sphere.
Plate valves are used to regulate the flow and pressure of liquids.
In poppet valves, the liquid pressure is proportional to the number of turns of the valve handle.
The factor that causes blockage works in two ways in plate valves.
In the first case, a lot of pressure is produced by moving vertically.
In another way, when the valve moves at an angle, it causes the pressure drop to be lower.
In ball valves, the flow direction must be considered.
If there is a possibility that the part is separated from the axis and the disk, the current enters from the bottom of the disk.
When they use poppet valves to cut off or connect the liquid, the liquid flow must enter from the upper part of the disk, in this case, the pressure of the liquid causes the poppet valve to seal better.
The orifice of plate valves is in the form of a disk, the end part of which is spherical or conical.
In this case, if the plate valve is located on a seat ring, it opens the path and can adjust the flow rate.
Because of this feature, plate valves are used in series in places where fluid is passed.
Plate valves are used in different places along with electric actuators.
These valves are used in metal seat mode.
In the case of a metal seat, the material of the disc and its seat is metal.
If they use them as soft seats, they will be used in a more limited way.
The differences between a plate valve and a gate valve
The leakage of the poppet valve when it is closed is less than that of the sliding or gate valve, and one of the reasons for this is that in poppet valves there is a ninety degree angle between the orifice and the seat, as a result of this, when the poppet valve It is closed against the flow of fluid, it can produce a higher pressure and in this case, the kinetic energy makes the plate valve close more easily and also not open.
Characteristics and problems of plate milk
Plate milk has advantages and disadvantages, which we will discuss further.
The first case: in a plate valve, the direction of liquid flow is opposite to gate valves.
The second case: by changing the direction of the liquid flow, tension is created in the poppet valve.
The third case: the tension that occurs in the plate valve causes the liquid pressure inside the pipe to drop, as a result, the pressure drop in the plate valve is higher than the gate valve.
The fourth case: the pressure drop in the plate valves causes the wear of the plate valve to be lower than that of the gate valve.
The fifth item: Poppet valves have many advantages, one of which is the use of poppet valves to control the pressure of liquid flow.
Plate valves are supplied and manufactured in BS 1873 and BS 5322, and their sizes are between three and one quarter and forty eight.
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