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Sewage Pump Station throttling mechanism 2010-10-20
Butterfly valves are often used for throttling down of water lines, but I wouldn't use one on a sewage force main.
Initial Spring Setting - Control Valve 2010-10-20
A Fisher control valve and on the front of the actuator is a table listing "initial spring settings (PSI)" for various valve configurations. What does this mean? Does this mean that the actuator spri
Max Gas Pipeline Velocity 2010-10-19
The gas and pipework characteristics are -
Biogas - 60% CH4, 40% CO2, traces of NOX, SOX & HCL
On / Off monitoring for butterfly valve 2010-10-19
A butterfly valve which transmits a signal or can provide some sort of indication when used of whether it's fully closed or not fully closed.
Firesafe vs firetested valves 2010-10-19
Cnfirm or correct the understanding of the terms firetested and firesafe; A firetested valve must be operable after the test but need not be seal tight whereas a firesafe valve must fully seal.
Retainerless Duo Wafer Check 2010-10-19
This might be relevant. Without retainer indicates perhaps a direct metal to metal sealing with direct contact, again the definitions for HP butterfly valves might be significant.
Modifying lug type butterfly valve to wafer 2010-10-19
Removal of valve from line requires removal of nuts and all studs from valve body and result in delays, one of the options is to change tapped holes on valve body to through hole by drilling,
Cooling Water System 2010-10-18
Performing a cooling water system calculate in Excel. The system is being pressure balanced using butterfly valves.
