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Processing Magazine

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Tecnología y Estudios de Suelos - Montreal residents advised to boil drinking water

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Home » Ask the Valve Expert: 'Bubble-tight' service
Ask the Valve Expert

Ask the Valve Expert: 'Bubble-tight' service

By Bob Donnelly
March 20, 2013
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KEYWORDS butterfly valve / ask the valve expert
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Reader:

Please define "bubble-tight" service when we have butterfly valves. Does this apply only to ANSI rated high performance valves or does resilient seated valves also have such a rating? 
 

Bob Donnelly:

"Bubble tight" means zero leakage. Second question -- no, not only ANSI high performance valves. Resilient seated valves are typically soft seated and as a result bubble tight. See ANSI FCI 70-2 for additional information. All Flo-Tite valves are tested to MSS SP-72 at 100 psi under water in Open and Closed positions.

Bob DonnellyValve automation pioneer Bob Donnelly has built several brands into market leaders in their respective niches in the process control automation market in North America. As vice president of marketing at Flo-Tite Valves & Controls, Bob is positioning Flo-Tite to be a major competitor in the U.S. valve market by promoting the company's engineering capabilities to solve process control problems for end-user engineers. His new book on Personal Branding is now available on Amazon and Barnes & Noble. The soft cover version will be available before the end of March.

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