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Ball valve history
Dear all good morning, I am interested in the history how ball valve developed, what is the initial design pattern looks like and how and why it gradually become today's design. Anyone can enlight me? It might involve different design, material selection, seal and seat innovation etc.. Best...- Xun2006
- Thread
- Replies: 2
- Forum: Valve engineering
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Breakaway torque for Trunnion Ball valve, different seat
Good morning dear all, I am new to valve industry, our sales threw a question to me regarding if they are changing seat material from, how much torque will added to actuate the valve. 1.) NPS 16, class 600, Trunnion ball valve, seat material changing from Nylon to Peek, what might be the...- Xun2006
- Thread
- Replies: 5
- Forum: Valve engineering
