Ball valve history
Ball valve history
(OP)
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 Regards,
Xun
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 Regards,
Xun





RE: Ball valve history
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RE: Ball valve history