During the use and installation of the high-pressure check valve, the following aspects need to be noted to ensure its normal operation and safety:

Pre-installation precautions

1. Inspection and preparation:

Carefully check the model, specification, and material of the check valve, ensuring it matches the design requirements of the system.

Check the appearance of the check valve for any damage, and ensure the interior is clean, without foreign substances or corrosive materials.

Carefully read the product operation manual and installation instructions to understand the installation steps and precautions.

2. Performance test:

Conduct strength and tightness performance tests before installation to ensure the check valve can operate normally in high-pressure conditions without leakage.

During the strength test, the test duration should be no less than five minutes, and check whether there is leakage in the shell, packing, etc.

Installation precautions

1. Installation position and direction:

Ensure the check valve is installed on the pipeline with flowing medium, and the direction of the medium flow is consistent with the arrow indication on the valve body.

According to the type of the check valve (such as swing type, lift type, vertical type, etc.), select the appropriate installation position. For example, swing type check valves can be installed horizontally or vertically, but in vertical installation, the medium flow must be from bottom to top.

2. Connection and tightening:

When using flange connection, check whether the flange mating surface, bolts, nuts, gaskets, etc. meet the requirements, and ensure a tight connection without leakage.

When using welding connection, ensure the weld quality complies with relevant standards, and the weld strength should not be lower than the valve body material.

Avoid over-tightening the check valve or pipeline connection components to avoid damaging the valve body and sealing surface.

3. Selection of sealing materials:

Choose appropriate sealing materials based on the fluid properties and working conditions to avoid using incompatible sealing materials with the fluid.

During use precautions

1. Operating norms:

Operate strictly in accordance with the product operation manual and operating procedures to avoid equipment damage or accidents caused by improper operation.

2. Regular inspection and maintenance:

Regularly inspect the sealingity, flexibility, and operating condition of the check valve to handle problems in a timely manner.

Clean the dirt and impurities on the valve body and valve disc to keep the valve clean.

3. Safety precautions:

When operating the check valve under high-temperature and high-pressure conditions, wear protective equipment to avoid burns or scalds.

Prohibit cutting or welding operations on the installed check valve to avoid damaging the valve body and sealing surface.

Special precautions

• For high-pressure check valves, special attention should be paid to whether their pressure-bearing capacity and sealing performance meet the system design requirements.

• During installation and maintenance, comply with relevant safety regulations and operating procedures to ensure personal and equipment safety.