High rate discharge (HRD) valve opening mechanism for fire and explosion protection

摘要

A valve actuation mechanism (40) has a plurality of links (42). Each link (42) has a proximal end and distal end, and the links (42) are disposed adjacent a valve member (35). The actuation mechanism (40) also has at least one roller (44) connected to the distal ends of at least two links (42). The roller (44) contacts a surface (48) of the valve member (35). In addition, at least one pivot (46) for each link (42) is present in the valve (15), wherein each pivot (46) is positioned on the proximal end of each of the plurality of links (42).