The maintenance cycle of valves is not fixed and is influenced by various factors, including the type of valve, frequency of use, working environment, material, and quality of maintenance. Here are some general guidelines for valve maintenance cycles:

1、 General maintenance cycle

Routine inspection and maintenance:

For valves in general thermal systems, it is recommended to conduct routine inspections and maintenance at least once a year. This includes checking the appearance, sealing, operational flexibility, and whether fasteners are loose of the valve.

After the heating season ends, a comprehensive inspection of valves should be carried out, especially for those valves that are frequently operated during the heating period, their wear and tear should be carefully checked.

Professional cleaning and maintenance:

According to the usage and water quality conditions of the underfloor heating system, it is recommended to conduct a professional cleaning every two years, including heating valves, water collectors, pipelines, etc. In areas with poor water quality, it is best to clean once a year.

During the cleaning process, dirt, impurities, etc. in the pipeline should be thoroughly removed to ensure the normal operation of the valves and the entire heating system.

2、 Maintenance cycle under specific conditions

High frequency use:

If the frequency of valve use is very high, the maintenance cycle may need to be shortened accordingly. For example, in some places that require continuous heating, valves may need to be inspected and maintained quarterly or even monthly.

Adverse working environment:

If the valve is exposed to harsh working environments such as high temperature, high pressure, corrosive gases or liquids, its maintenance cycle should also be correspondingly shortened. This is because these environmental factors can accelerate the wear and aging of valves.

Special material valve:

Valves made of different materials have different service lives and maintenance cycles. For example, stainless steel valves typically have a longer lifespan, while brass valves may have a shorter lifespan. Therefore, when selecting valves, full consideration should be given to their material and operating environment, and a reasonable maintenance plan should be developed accordingly.

3、 Criteria for maintenance and replacement

Leakage situation:

If the valve leaks, whether it is minor or severe, it should be repaired or replaced immediately. Leakage not only causes thermal loss, but may also pose a threat to system safety.

Operational flexibility:

If the valve becomes inflexible or stuck during operation, it may be due to the accumulation of impurities inside or the wear of seals. At this point, the valve should be cleaned or the seals replaced.

Appearance inspection:

Regularly inspect the appearance of valves to see if there are signs of rust, cracks, etc. If these problems are discovered, timely measures should be taken to repair or replace them.

Service life:

Generally speaking, metal valves may experience aging, wear and tear after years of use. Therefore, based on the material and service life of the valve, a rough replacement plan can be developed. For example, some valves may need to be replaced after 5-10 years of use.

In summary, the maintenance cycle of valves should be determined based on specific circumstances. When developing maintenance plans, factors such as valve type, frequency of use, working environment, material, and quality of maintenance should be fully considered. At the same time, regular inspection and testing of valves to promptly identify and solve problems is the key to ensuring the safe and efficient operation of the thermal system.