 |
|
BS&B Pressure Safety Management
|
The BPRV Buckling Pin Relief Valve (photo) may be certified according to the 2009 addendum of ASME Section III, Div. 1, bearing both the UD stamp and NB mark. Since 2004, the BPRV valves have been available with ASME UD stamp based on certification according to ASME Code Case 2091-3. This latest addendum welcomes pin-actuated devices to full code status. The patented BPRV is based upon the offset shaft butterfly valve concept. The offset of the shaft results in a turning moment being generated about the valve shaft when a pressure differential is applied across the device. A Buckling Pin mounted externally to the process normally resists the moment. By calibrating the pin, the BPRV provides accurate pressure relief. — BS&B Pressure Safety Management LLC, Tulsa, Okla.