Overhauling of butterfly valves on board

Butterfly valves are the most common valves found on board and we might sometimes face difficulties associated with the butterfly valves like leaking, hard to operate, broken or frozen valve.
It is very important to know the basics of the butterfly valve or for that matter any valve so that they can be used correctly and kept in mint condition always avoiding unnecessary hassles and trouble during critical times.

Видео Overhauling of butterfly valves on board канала shipmate Nawaf Kazi