Internal leakage problem of the water supply valve in the boiler
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The water inlet valve of the waste heat boiler suffers from severe leakage throughout the year, and repairs do not resolve the issue. I would like to ask if anyone knows any solutions?
Whether the valve’s specifications meet the usage requirements.
It meets the requirements. What’s unclear now is whether there is any effective way to completely resolve the issue of internal leakage in the valves
Internal leakage in the valve is either due to quality issues or a lack of resistance to high temperatures and corrosion; consider whether excessive water impurities, especially particles with high hardness, are affecting the proper operation of the valve
Thank you for your help. The water quality in Sheung Shui is quite good; it’s hard to say anything about the issue with the valves at the moment. Mainly, I want to modify the setup of the water supply pipes
I wonder what the pressure in your boilers is? Currently, valves are used in boilers to raise their pressure rating: for pressures of 10 MPa to 16 MPa, valves with a rating of 32 MPa are employed. Valves with internal leakage need to be replaced regularly; we grind the main valves once a year
Hydrazine is used for deoxygenation in boilers, and it reacts with Stellite alloy; therefore, in situations where hydrazine is used, valves that are resistant to corrosion or that have been treated should be employed
Add another valve; if it’s not possible to stop the system for repairs, it is recommended to make an opening under pressure and install a valve