What is swing check valve?
The swing check valve is a valve installed on the pipeline, which is mainly used to prevent fluid return. The disc of swing check valve is fixed on the seat, when the medium flows through the valve, the disc is pushed to open and the medium smoothly through; when the medium flow is stopped, the disc is automatically closed to prevent media return.
The swing check valve can be divided into the following categories according to the material:
1. Cast iron swing check valve: It mainly uses gray cast iron or ductile iron. The price is relatively cheaper and suitable for general low-pressure, low-temperature pipeline systems.
2. Stainless steel swing check valve: The main material is stainless steel, which can have good corrosion resistance. It is suitable for pipeline systems with high pressure, high temperature, and corrosive media, such as chemical industry, oil, and other industries.
3. Carbon steel swing check valve: It is mainly made of carbon steel material, which has good mechanical properties and is suitable for pipeline systems with low temperature, low pressure, and non -corrosive media.
In general, swing check valves are suitable for different temperature, pressure and media environment according to the material. According to the actual application requirements, the selection of appropriate materials can improve the reliability and stability of the pipeline system.
Advantages of swing check valve
1. Prevent fluid backflow
The disc of the check valve is in close contact with the seat, which can prevent the backflow of the medium in the pipeline and protect the safe operation of the pipeline and equipment.
2. Good mechanical performance
The strength and hardness of carbon steel are relatively high, so the carbon steel swing check valve has good mechanical properties and can withstand greater pressure and impact.
3. Good wearresistance
The wear performance of carbon steel is better, so the carbon steel swing check valve can protect
the valve and seat to a certain extent and extend the service life.
4. Strong corrosion resistance
The carbon steel swing check valve is made of high quality materials. To a certain extent, it can resist the erosion of non -strong acid, weak alkali and other media, and has good corrosion resistance.
5. Higher cost performance
Compared with the swing check valve of stainless steel and other materials, the price of carbon steel swing check valve is more affordable, and it is more suitable for small and medium-sized pipeline systems.
6. Simple structure and convenient installation
The swing check valve consists of simple components such as body, disc, seat, and stem. The structure is simple, the volume is small, and the assembly and maintenance are easy. It is very suitable for some limited pipeline systems in some venues.
7. Wide range of application
The swing check valve can be applied to water, oil, gas and other fluids, and it is widely used in urban drainage, metallurgy, pharmaceutical, chemicals, and mines.
1. WESDOM patent products, patent certification
The product side flanges comply with national, German, Russian, American, British and Japanese standards and other domestic and international standards for multiple pressures, easy connection and wide adaptability, which can reduce the type of purchase and stock.
2. The product has an independent identity to ensure traceability
Each wesdom product has its own unique identification number, to ensure product traceability.
3. Provide material inspection report
All wesdom products can provide the material inspection report of the main parts.
4. One-stop service
One-stop service, we not only supply high quality products, also supply solutions and after-sales service.
5. WESDOM has a lot of project experience
We have a lot of project experience in countries such as Pakistan and the Philippines, WESDOM has always been noticed all over the world, and trust comes from quality.
Quality control process