Control valve
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Can the boiler feed water control valve be used as a stop valve, or what is its sealing performance? Could the host please let me know?
The boiler feed water control valve cannot be used as a shut-off valve, as its leakage level is not as high as that of a shut-off valve – it is usually at level III or IV; the use of non-metallic sealing materials may enable it to reach level V.
This depends on the leakage level you choose; the higher the level, the stronger the shut-off effect. However, there is still a slight difference between the sealing performance of a control valve and that of a shut-off valve.