Plastic check valve airtight test

Plastic check valve airtight test

5 day ago

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Shenzhen DYX Technology Co.,Limited

 3 year year

Product details

What are the different types of plastic valves?

1. PVC valve: commonly used in general industrial pipeline systems, it has good corrosion resistance and wear resistance.

2. PP valve: suitable for pipeline systems in acidic and alkaline media, with good corrosion resistance and high temperature resistance.

3. PVDF valve: suitable for pipeline systems in strong acid and alkali media, with excellent corrosion resistance and high temperature resistance.

4. PE valve: mainly used in low-pressure water systems, with good corrosion resistance and wear resistance.

5. ABS valve: mainly used in water supply and drainage systems, with good corrosion resistance and wear resistance.

plastic check valve image

What is the difference between a mini check valve and a non mini check valve?

The main difference between check valves and non check valves lies in their functions and usage scenarios.

1. Check Valve: A one way valve is a valve that prevents fluid backflow. It only allows fluid to flow in one direction, preventing fluid backflow or backflow. Check valves are usually used in pipeline systems that require prevention of backflow, such as water pump systems, air conditioning systems, etc.

2. Non return valve: Non return valve refers to any type of valve other than a check valve, whose function may be to regulate flow, cut off fluid, control pressure, etc., but may not necessarily have the function of preventing backflow. There are various types of non check valves, including ball valves, gate valves, butterfly valves, etc., which are selected according to specific usage scenarios and needs.

Parameter Specification

Material	Plastic	Color	Milky white
Power	Electric	Media	Water
Weight	1g	Application	Water treatment system

What happens without a check valve?

Without a one way check valve, liquids or gases can freely flow back and forth in the pipeline, which may lead to the following issues:

1. Fluid backflow: If the fluid in the pipeline flows unidirectionally without a check valve, the fluid may backflow, causing the system to malfunction or damaging other components of the system.

2. Pressure loss: Without a check valve, the fluid may experience pressure loss in the pipeline, affecting the efficiency and performance of the system.

3. Leakage: In some cases, the absence of a check valve may lead to pipeline or equipment leakage, causing safety hazards and environmental pollution.

Dimension Drawing

Plastic check valve dimension

Is a plastic check valve a backflow?

Check valves and return valves are two different types of valves. A check valve is a type of valve that prevents media backflow and is typically installed on pipelines to prevent liquid or gas backflow in the pipeline. A reflux valve is a type of valve used to control the flow of fluid, usually installed on pipelines, and can control the flow of fluid. Therefore, although check valves and return valves have certain similarities in function, they are two different types of valves.

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What are the differences between different types of check valves?

1. Lift check valve: The valve disc of this check valve slides along the vertical centerline of the valve body. It can be divided into two categories: vertical and horizontal. The vertical medium outlet pipeline is the same as the valve seat pipeline, so the flow resistance is small and is usually used in vertical pipelines; Horizontal type is suitable for horizontal pipelines. Straight through check valves are generally installed on horizontal pipelines and are only suitable for situations with a diameter of DN less than 50.

2. Swing check valve: The valve disc of this check valve is in a circular shape and rotates around the axis of the valve seat channel. Its internal channels are streamlined, so the resistance is lower than that of the lifting type, and it is usually used for small and medium diameter as well as low-pressure large-diameter pipelines. Its sealing performance is not as good as the lifting type, but it can reduce the impact of water flow. According to the valve diameter, it can be divided into single valve, double valve, and multi valve types, which are respectively suitable for medium, large, and large-diameter pipelines.

3. Butterfly check valve: This type of water check valve has a similar structure to a butterfly valve, which is relatively simple, has low flow resistance, and low water hammer pressure. Usually installed on horizontal pipelines, but with poor sealing performance.

4. Diaphragm check valve: This type of hydraulic check valve has various structural forms, mainly using the diaphragm as the opening and closing component. It has excellent waterproof hammer performance, simple structure, and low cost, but the temperature and pressure used will be limited by the diaphragm material. It is usually installed on pipelines that are prone to water hammer.