Brass horizontal check valves should be installed vertically or horizontally

Horizontal, as the name suggests, is dressed horizontally, vertically, and vertically, and spinning can be worn horizontally or vertically!

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.

<> hello! Can the check valve be installed vertically: "The check valve cannot be installed vertically, the correct one is horizontally.

Check valves, also known as check valves or check valves, are used to prevent the backflow of media in the pipeline. The opening and closing parts rely on the flow and force of the medium to open or close by themselves, so as to prevent the medium from flowing backwards. Check valves belong to the automatic valve category, which are mainly used on pipelines where the medium flows in one direction, and only allow the medium to flow in one direction to prevent accidents.

This type of valve should generally be installed horizontally in the pipeline. <>

Also known as check valve, it is an automatic valve, which relies on the pressure of the flowing medium in the pipeline to push the valve disc to achieve the closing and opening of the valve, when the medium stops flowing, the check valve disc is closed, and at the same time can prevent the medium in the pipeline from backflowing, which plays a great role in ensuring the safety of the pipeline.

The installation of the check valve is to ensure the flow direction of the water flow inside the pump, so as to ensure the normal operation of the pump, so the installation position of the check valve, whether it is installed in front of the pump or after the pump, can be divided into two situations:

One is to install the end of the vertical suction pipe in front of the pump, the purpose is to fill the pump with water once without pumping water, because the pump can only idle and pump water when there is no water in the pump and the straw in front of the pump, so the pump must be filled with water to pump out the water, the installation of this pump is a method when it is higher than the liquid level, also called the negative pressure method, such as pumping water up from the well.

Another method of installing the water pump is that the liquid level is higher than the water pump, and this method is generally used when the secondary water supply is used, because the liquid level is higher than the water pump in order to facilitate the start and stop of the water pump, the pump outlet valve does not need to be closed, so the check valve should be installed in the rear of the water pump.

The check valve must be installed at the outlet of the pump, in front of the outlet control valve, to allow access to the check valve. Generally, the first outlet of the pump is a soft connection (shock absorber), followed by a check valve, and then a partition valve (such as butterfly valve, gate valve, globe valve, etc.).

1. Install the check valve first, and then install the gate valve or butterfly valve.

Advantages: It can protect the check valve, especially in the parallel pump, when one pump does not start, and the other pump starts, the impact force is borne by the gate valve or butterfly valve.

Disadvantages: Who will protect the gate valve or check valve? There was a case where the disc of a butterfly valve was broken.

2. Install the gate valve or butterfly valve first and then install the check valve.

Advantages: It can protect butterfly valves or gate valves, and the impact force is borne by the check valve.

Disadvantages: who will protect the check valve, the check valve is opened and closed by the pressure difference, if the main pressure is high, the pump will be opened if the pressure is high, if the flow rate used is unstable, then the check valve will be repeatedly switched and closed, which will affect the life of the check valve.

Check Valve Installation Requirements:

1. The disc of the check valve is disc-shaped, and the rotating motion is made around the rotating shaft of the valve seat channel, because the channel in the valve is streamlined, the flow resistance is smaller than that of the butterfly check valve, which is suitable for large diameter occasions with low flow rate and infrequent flow changes, but it is not suitable for pulsating flow, and its sealing performance is not as good as that of lifting type. Butterfly check valve is divided into single valve type, double valve type and more than half type, these three forms are mainly divided according to the diameter of the valve, the purpose is to prevent the medium from stopping the flow or backflow, weakening the hydraulic impact.

2. The check valve slides along the vertical center line of the valve body, and the internal thread check valve can only be installed on the horizontal pipeline, and the disc can be used as a round ball on the high-pressure small-diameter check valve. The body shape of the butterfly check valve is the same as that of the globe valve (it can be used in conjunction with the globe valve), so it has a large coefficient of fluid resistance. Its structure is similar to that of a globe valve, and the body and disc are the same as those of a globe valve.

The upper part of the valve disc and the lower part of the valve cover are processed with the guide sleeve Jane, and the valve disc guide Jane can be freely lifted in the valve cup guide Jane, when the medium flows downstream, the valve disc is opened by the medium thrust, and when the medium stops flowing, the valve disc falls on the valve seat by self-sagging, and plays the role of preventing the medium from counterflowing. The direction of the medium inlet and outlet channel of the straight-through butterfly check valve is perpendicular to the direction of the valve seat channel; Vertical lifting check valve, its medium inlet and outlet channel direction is the same as the direction of the valve seat channel, and its flow resistance is smaller than that of straight type.

3. Forged steel check valve: a check valve in which the disc rotates around the pin shaft in the valve seat. The disc check valve has a simple structure and can only be installed on the horizontal pipeline, with good sealing.

4. National standard check valve: a valve in which the disc slides along the centerline of the valve body. Pipeline check valve is a new kind of valve, which is one of the development directions of check valve, which is small in size, light in weight and good in processing technology. However, the coefficient of fluid resistance is slightly larger than that of swing check valves.

5. Compression check valve: This kind of valve is used as a boiler feed water and steam shut-off valve, which has the comprehensive function of lifting check valve and globe valve or angle valve. In addition, there are some check valves that are not suitable for pump outlet installation, such as foot valves, spring valves, Y-type check valves, etc.

The function of the check valve is to prevent the air plug caused by the backflow of water, so the check valve is the water inlet of the water pump, and the pipeline above the check valve must be filled with water for the first use. In order to slowly discharge the air and water below the check valve

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Can be installed horizontally or vertically

The swing-type check valve disc rotates around the rotating shaft, and its fluid resistance is generally less than that of the lifting check valve, it is suitable for larger diameter occasions, the installation position is not restricted, usually installed in the horizontal pipeline, it is suitable for larger diameter occasions. According to the number of valve discs, it can be divided into three types: single-lobe swing type, double valve swing type and multi-valve swing type. Single-valve swing check valve is generally used in medium-caliber occasions.

In order to reduce the water hammer pressure, it is best to use a slow-closing check valve that can reduce the water hammer pressure when selecting or using a single-valve swing check valve for large-diameter pipelines. The double-flap swing-open check valve is suitable for large and medium-diameter pipelines. The double-valve swing check valve structure is light in weight, and it is a fast check valve; The multi-lobe swing check valve is suitable for large-diameter pipelines.