Out of a sense of necessity he set out to design his own electronically controlled, closed-loop pressure regulator. The metal block is a custom manifold with valve hardware mounted onto it ...

Pressure is mounting on the US Food and Drug Administration (FDA) to explain its decision to ignore an advisory committee's positive recommendation for the cancer vaccine Provenge. In the coming ...

A large diaphragm is pressurized by the low pressure side of the regulator, and is held back by a spring. When the pressure compared to ambient atmosphere is high enough to overcome the spring ...