What are the conditions for setting up pressure reducing valves on domestic water supply pipes in pu

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, Chaoda, 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.

Mainly depends on your use, if it is a primary decompression, it must be on the main pipeline, if it is a precise control of an actuator, it is best to install it close to the actuator (such as a cylinder), especially the domestic pressure reducing valve, if it is too far, there will be a lack of pressure, because it is too far away The pressure loss is too great! Generally, a filter is added in front of the pressure reducing valve to make the air source cleaner and make the actuator last longer!

Let's talk about the installation method of pressure reducing valve for tap water pipes? Hello dear, glad you asked. 1.

If the tap water pressure reducing valve does not have its own pressure gauge, the pressure gauge should be installed on the pipe before and after the valve. 2. If the medium contains impurities, it may block the valve hole, install a pipeline filter about 1 meter before the inlet of the tap water pressure reducing valve, and the number of filters is best controlled above 20 meshes. 3.

In order not to affect the use effect of pressure reduction, and at the same time considering the convenience of installation and maintenance, the tap water pressure reducing valve is generally installed on the horizontal pipeline, and the bellows pressure reducing valve is reversed. 4.Before the installation of the Suishui Hail Pressure Reducing Valve, see whether the nameplate and certificate are consistent with the required valve model and working conditions, and whether there is serious damage to the appearance.

Fully flush the pipeline and flush the pressure reducing valve, if the Shenzhen Euro valve pressure reducing valve is stored for too long, it is necessary to fully clean the inside of the pressure reducing valve body. 5.In order to prevent accidents caused by pressure overpressure behind the valve, a safety pressure relief valve should be installed about 4 meters from the outlet end of the tap water pressure reducing valve just in case.

6. Before installation, you must pay attention to the direction of the arrow on the valve body, the arrow points to the direction of the medium flow, and cannot be reversed, otherwise the pressure reducing valve will fail and cause an accident!

GB 50015-2003 (BAI2009 Edition) High-rise building life water supply system should be vertical

Partitioning, vertical partition pressure should meet the following DAO requirements:

1. The minimum special sanitary appliances in each sub-district are allocated water.

The hydrostatic pressure at the subordinate point should not be greater than;

2. If the hydrostatic pressure is greater than the inlet pipe (or water distribution horizontal pipe), it is advisable to set up pressure reduction or pressure regulating facilities;

gb 50555-2010

The hydrostatic pressure at the minimum water distribution point of sanitary appliances in each sub-district should not be greater, and pressure reducing facilities should be set up in the low-level part of the sub-district to ensure that the water supply pressure at each water point is not greater than.

Look at the norms and it's clear.

"Code for Design of Building Water Supply and Drainage" (GB50015-2003) sanitary appliances.

The maximum working pressure of the water supply fittings shall not be greater than.

The domestic water supply system of high-rise buildings should be vertically partitioned, and the vertical partition should meet the following requirements:

1. The hydrostatic pressure at the minimum water distribution point of sanitary appliances in each zone should not be greater, and it should not be greater than under special circumstances;

2. If the water pressure is greater than the inlet pipe (or water distribution horizontal pipe), it is advisable to set up pressure reduction or pressure regulation;

3. The water pressure of the most unfavorable water distribution point in each zone should meet the water pressure requirements.

According to the provisions of the code, the water supply mode of building water supply and drainage can be set up in two ways:

1. Vertical partition double riser water supply, and set up pressure reducing valve for the standpipe in the static pressure overpressure area;

2. Set up a pressure reducing valve for the branch horizontal pipe that directly feeds the static pressure overpressure;

Proportional decompression copy

The valve should be installed vertically, that is, the pressure is reduced proportionally.

Adjustable pressure reducing valves should be installed horizontally.

Moreover, the water flow direction of the pressure reducing valve is suitable from top to bottom, not very suitable for from bottom to top, if you are a dry pipe with high pressure, calculate the pressure required for the most unfavorable point, and decompress, if the static pressure above and below is too large, it is installed on the horizontal trunk pipe of the following layer.

What you want to say is how to set it up.

Bai put it in place

The steps are as follows: zhi

1.Before the pressure reducing valve is installed in the system, the plate finds the place to adjust the pressure, adjusts the spring force to the minimum, and installs the pressure gauge at the pressure gauge interface of the pressure reducing valve;

2.After installing the pressure reducing valve into the pipeline, close the ball valve or gate valve behind the pressure reducing valve;

3.From top to bottom, rotate clockwise to gradually increase the spring force, at this time the outlet pressure of the pressure reducing valve gradually increases, pay attention to the pressure gauge reading at the same time until the required pressure value is reached;

The whole process is basically like this, if you need to import pressure reducing valves, you can find Wang Jitang of Shenzhen Dexun, Dexun Technology is the first in Italy or valve China, pressure reducing valves are cost-effective, and they are replaced for a year.

Here's how to set up a pressure reducing valve in the water system:

1. Before the pressure reducing valve is installed in the system, find the place to adjust the pressure, adjust the spring force to the minimum seepage, and install the pressure gauge at the pressure gauge interface of the pressure reducing valve;

2. After installing the pressure reducing valve into the pipeline, close the ball valve or gate valve behind the pressure reducing valve;

3. Look from top to bottom, rotate clockwise and gradually increase the spring force, at this time, the outlet pressure of the pressure reducing valve gradually becomes larger, pay attention to the pressure gauge reading at the same time until the required pressure value is reached.

Answer]: C According to the "Technical Specifications for Fire Water Supply and Fire Hydrant System" The following provisions should be met when using pressure reducing valves to reduce pressure and supply water in zones: 1

The performance of the pressure reducing valve used in fire water supply should be safe and reliable, and should meet the requirements of fire water supply; 2.The pressure reducing valve should be selected according to the design flow rate and pressure of the fire water supply, and the flow rate of the stove should be within the effective section of the flow pressure characteristic curve of the pressure reducing valve, and the outlet dynamic pressure of the pressure reducing valve should not be less than 65% of the design value when the design flow rate is 150%; 3.Each water supply zone shall be provided with no less than two groups of pressure reducing valve groups, and each group of pressure reducing valve groups shall be equipped with standby pressure reducing valves; 4.

The pressure reducing valve should only be installed on the water supply pipe with one-way flow, and should not be installed on the water main pipe with two-way flow; c False. 5.The pressure reducing valve should adopt a proportional pressure reducing valve, and when it is exceeded, it is advisable to use a pilot mold delayed pressure reducing valve; 6.

The pressure ratio of the pressure reducing valve before and after the valve should not be greater than 3:1, when the pressure reduction of the first-level pressure reducing valve can not meet the requirements, the pressure reducing valve can be used in series to reduce the pressure, but the series pressure reduction should not be greater than two levels, the second-stage pressure reducing valve should use the pilot pressure reducing valve, and the pressure difference between the front and rear of the valve should not be exceeded; 7.A safety valve should be set up after the pressure reducing valve, and the opening pressure of the safety valve should be able to meet the safety of the system and should not affect the water supply safety of the system.