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Butterfly valve design: doubl ecc 2010-10-14
Double-offset valves, also known as high-performance butterfly valves, have the shaft mounted slightly offset from the pipe centerline, and the shaft is mounted behind the sealing band of the seat.
Butterfly valve design:conc ecc 2010-10-14
The non-offset valves are the low end of the spectrum. They are generally "rubber" lined. Typically capable of sealing to 150 psi, temp-limited by the elastomer of the seats, and the shaft seals by i
Valve to Deliver Steam & Source on the Mac 2010-10-11
Rotary disc valve 2010-10-11
New date for Valve World Expo 2012 2010-10-11
