| 摘要 |
<p>A fluid regulating device comprises an actuator with upper and lower hous ing components. The upper and lower housing components are secured together at mating flanges via a plurality of fasteners. The upper housing component is formed with a vent to contain a relief valve, which exhausts fluid to the atmosphere under overpressure conditions. The upper housing component is co nstructed such that it does not require a pedestal or fins extending between the vent and the flange, which advantageously provides a completely unobstr ucted, continuous, ring-shaped flange for receiving and manipulating the fas teners during assembly and/or maintenance of the regulating device.</p> |
