What does the Y in the electric pressure reducing valve 945Y refer to?

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

y is the representative sealing sub material of cemented carbide.

This model is not a manual valve, judging from the model, it is a pneumatic cast steel flange globe valve, 16 kg pressure, and the diameter is DN250

Y-Pressure Reducing Valve 4-Flange Connection 3-Piston H-Seal Face Material is: Stainless Steel or Stainless Steel Surfacing Welding, 16-Pressure Rating Body Material is Carbon Steel. This is generally used in pressure reducing valves where the medium is gas, and the most common is the adjustable piston steam pressure reducing valve.

Y-Pressure Reducing Valve 4-Flange Connection 3-Piston H-Sealing Face Material: CR13 series stainless steel 16-Pressure Rating Body Material is carbon steel.

Generally, there is an adjustment range for the outlet pressure of the pressure reducing valve, as long as you use a screwdriver to insert it into a slot and twist it, the clockwise pressure becomes larger and counterclockwise decreases.

Adjustable pressure reducing valves are preferred by Italian or brands. The outlet pressure of an adjustable pressure reducing valve generally has an adjustment range, unlike an adjustable pressure reducing valve, where the outlet pressure is set at the factory and is not adjustable.

The method of adjusting the outlet pressure of the adjustable pressure reducing valve is simple:

1.Open the black cover on the adjustable pressure reducing valve, find the place to adjust the outlet pressure of the adjustable pressure reducing valve, and use a slotted driver to screw the spring of the adjustable pressure reducing valve counterclockwise to the loosest state;

2.Remove the black plug of the pressure gauge interface on the adjustable pressure reducing valve and install the pressure gauge to the pressure gauge interface;

3.Install the adjustable pressure reducing valve on the pipeline and close the ball valve or gate valve behind the adjustable pressure reducing valve valve;

4.Rotate clockwise with a slotter to make the spring force gradually increase, you can find that the pressure gauge reading continues to increase, when the required outlet pressure value is reached, stop the rotation and re-close the black cover, so as to prevent dust or other dirt from falling into the body of the adjustable pressure reducing valve;

5.Open the ball valve or gate valve after the adjustable pressure reducing valve valve, open the faucet or other water appliances after the valve, observe the reading of the pressure gauge on the valve body of the adjustable pressure reducing valve, you can find that the pressure value is slightly smaller than the pressure value just set, this is normal, because the pressure adjustment is carried out in the static pressure state, when someone uses water, the water will pass through the valve core There will be a certain liquid resistance, so the pressure will be slightly smaller, and the pressure value will return to the set value when no one uses water.

The working principle of the adjustable pressure reducing valve can be referred to.

Definition of Adjustable Pressure Reducing Valve:

The outlet pressure of the pressure reducing valve is divided into outlet static pressure and outlet dynamic pressure. Among them: outlet static pressure, which refers to the outlet pressure when the flow rate through the pressure reducing valve is zero; The outlet dynamic pressure refers to the outlet pressure when the pressure reducing valve has a flow rate passing through.

It can reduce both dynamic pressure and static pressure, which is the most important functional difference between the pressure reducing valve and the pressure reducing device such as pressure reducing orifice, throttle pipe and throttle valve.

Proportional pressure reducing valve: It is a pressure reducing valve that realizes a certain proportional relationship between the inlet and outlet pressures according to the difference in the induction area of the inlet and outlet inlet and outlet piston in the valve cavity, and sets the outlet pressure according to the inlet pressure.

Adjustable pressure reducing valve: according to the principle of hydraulic differential control or hydraulic pilot control (the main valve is controlled by the pressure reducing pilot valve), the opening and flow of the valve disc are automatically adjusted according to the set value of the outlet pressure, so as to realize the pressure reduction and stability of the outlet pressure, and the correlation with the inlet pressure is small, and the outlet pressure of the pressure reducing valve can be effectively adjusted through the spring adjustment device.

It is a pressure reducing valve with adjustable outlet pressure.

Pressure reducing valve with adjustable outlet pressure.

Italian OR brand adjustable pressure reducing valve is the best.

Acting pressure reducing valves.

The simplest pressure reducing valve, a direct-acting pressure reducing valve with a flat diaphragm or bellows. Because it is a self-contained structure, there is no need to install an external sensing line downstream. It is the smallest and most economical of the three types of pressure reducing valves and is designed for low to medium flow rates.

Direct-acting regulators typically have an accuracy of +-10% of the downstream set point.

Piston pressure reducing valves.

This type of pressure reducing valve is a combination of two types of valves, pilot valve and main valve. The design of the pilot valve is similar to that of a direct-acting pressure reducing valve. The discharge pressure from the pilot valve acts on the piston, causing the piston to open the main valve.

If the main valve is too large to open directly, this design uses the inlet pressure to open the main valve. As a result, this type of pressure reducing valve has a higher capacity and accuracy (+-5%) for the same pipe size than a direct-acting pressure reducing valve. Like direct-acting pressure reducing valves, pressure reducing valves sense pressure internally and do not require external sensing wires.

Diaphragm pressure reducing valves.

In this type of pressure reducing valve, a double diaphragm replaces the piston in an internally piloted pressure reducing valve. This increased diaphragm area allows for the opening of a larger main valve and a larger capacity than an internally piloted piston regulator for the same pipe size. In addition, the diaphragm is more sensitive to pressure changes with an accuracy of +-1%.

The higher accuracy is due to the positioning of the downstream sensing line (outside the valve) where there is less turbulence in the gas or liquid. The regulator is very flexible and can be used with different types of pilot valves (e.g. pressure valves, temperature valves, air loading valves, solenoid valves, or a combination of several valves).

There are many types of pressure reducing valves, the main models are: Y43H F, Y42X, Y42F, Y44H, Y110, Y45H, Y945Y, Y416X, as well as branch pressure reducing valves, YD43H, Spirax Sarco pressure reducing valves, etc.

The pressure reducing valve is selected from Italy

To put it simply, the general water pressure reducing valve is divided into piston pressure reducing valve and diaphragm pressure reducing valve, the latter is more accurate but also expensive.

It means that the sealing surface material is: rubber.

According to the provisions of the "JB T 308-2004 valve model preparation method".

y== Pressure reducing valve.

1== Connection form: internal thread.

3== Structural form: piston type.

x== Sealing surface material: rubber.

16== Pressure Rating:

From the direction of the inlet pipe, butterfly valves, Y-type filters, pressure reducing valves, rubber soft joints, butterfly valves.

Crown valve pushing.

It's basically the same.

The appearance is not the same.

200x is widely used for fire water and tap water.

Y741X chemical is used for multi-point.