What is a Trunnion mounted ball valve? Trunnion mounted ball valve disassembly. Parts breakdown.

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Thank you for tuning into everything valves. The channel dedicated to bringing you everything valves. In this video we will be disassembling a 3" Class 600 Trunnion mounted ball valve.


This valve was brought to us for repair. Each manufacturers trunnion ball valve will vary in design but every trunnion will follow the same concepts. In this video we will show you how to take apart a trunnion ball valve. We will also show each part inside of the valve.



These valves are repairable. All of the orings and graphite parts will be replaced. The seat inserts were ok and can just be relapped. These valves are very durable and if repaired properly will work like new.


I hope this video helped understand a trunnion mounted ball valve. Please like and subscribe for more valve videos. If you have any comments please let us know. Thank you for watching and we will see you in the next video.


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