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Single Block and Bleed Ball Valve 2010-10-26
Talk about single block and bleed ball valve,With regards to single block and bleed valves, you can either install as two separate valves.
Ball valve passing 2010-10-26
Performed passing test on MOV's on low pressure, we found valves passing, I would like to know if the high pressure above 60barg will seal the seat leakage.
NACE MR0175/ISO 15156 & Ball Valves 2010-10-26
The typical trim in small floating ball valves is Austenitic Stainless Steel (304 or 316); this is what is stocked and readily available.
Ball valve leak test 2010-10-25
A standard for allowable leak rates during ball valve testing,addressing shutoff valves (bubble tight) instead of control valves (which leak like a sieve).
Positive Isolation - Blinds 2010-10-25
Positive isolation can be obtained with the correct selection of valves. Use a DBB (double block and bleed) valve and you can have the isolation that is required.
Ball Valve Seat Geometry 2010-10-25
Differences in ball valve design, especially with respect to Ball/Seat combinations in metal sealing applications.
Bubble Tight Shutoff 2010-10-25
A vendor who quoted me 'bubble tight shutoff' for several full bore ball valves. No mention even of FCI 70-2 (Classes I thru VI for control valves - some ball valve companies do) or even API 598 on hi
Ball Valve Seat Damage 2010-10-25
A water system with a large manifold feeding 10 3 inch pipes. Each pipe off the header has one 3" ball valve, about 1 ft of pipe and a nozzle.When complete the valves are commanded closed under full
