How To Choose Different Types Of Sampling Valves

Sampling is a critical operation in many industrial sectors, used to obtain samples of liquids or gases for analysis, detection or testing. As a key component in the sampling process, there are many types of sampling valves, each type suitable for different application scenarios.

1. Core Insertion Sampling Valve:

Core insertion sampling valves collect samples by inserting a sampling tube into the fluid line. This type of sampling valve is suitable for sampling high-pressure, high-temperature, high-viscosity or toxic fluids because it can reduce sample volatilization or leakage. Core insertion sampling valve selection depends on factors such as fluid properties, pressure and temperature.

2. Filled sampling valve:

Fillable sampling valves use a sealed container to collect fluid samples. When the container is opened via the sampling valve, a sample is taken from the pipeline. Filled sampling valves are suitable for situations where smaller sample volumes are required and are suitable for environments where there is a risk of contamination of the fluid. Container capacity, sealing performance and cleanliness need to be considered when selecting.

3. Extraction sampling valve:

The extraction sampling valve draws a certain amount of fluid sample into the sampling bottle. This type of sampling valve is suitable for situations where larger sample volumes are required, and multiple sampling can be used to obtain larger samples. The selection needs to consider the sample extraction speed, the extraction volume and the applicability of the sampling bottle.

4. Drain type sampling valve:

The hydrophobic sampling valve is mainly used for the collection of liquid samples. It is able to separate sample sample and main fluid to avoid contamination. The sealing performance of the valve, the corrosion resistance of the material and the hydrophobic performance should be considered when selecting.

5. Multi-channel sampling valve:

The multi-channel sampling valve allows samples to be collected from multiple sampling points, which is suitable for situations where samples need to be collected from different locations to obtain more comprehensive data. Valve switching speed, number of channels, and operational complexity should be considered when selecting.

6. Automatic sampling valve:

The automatic sampling valve realizes the sampling process through automatic control, which is suitable for situations requiring high frequency, high precision or unmanned operation. The control system, accuracy requirements and reliability need to be considered when selecting.

So, with so many types of sampling methods, how should you choose when purchasing?

Method of Choice

Fluid properties: Consider the properties of the fluid, such as temperature, pressure, viscosity, and corrosiveness, to select the appropriate material and type.

Sampling volume: Select the appropriate sampling valve type according to the required sample volume.

Environmental requirements: Consider whether the sampling environment needs special requirements such as anti-corrosion, anti-pollution, and explosion-proof.

Automation requirements: Select the appropriate sampling valve type according to whether automatic control is required.

Ease of Operation: Consider how the sampling valve will operate, its maintenance needs, and how easy it is to clean.

To sum up, according to the application requirements and environmental characteristics, it is very important to choose the appropriate type of sampling valve. By comprehensively considering all factors, the best sampling valve can be selected to ensure the accuracy and reliability of the sampling process during use.