High inlet pressure three-stage pressure regulator

摘要

Two-stage and three-stage regulators having a piston situated in a first stage for substantially reducing high pressures introduced into the regulator. The reduced pressure from the first stage is exerted against a second-stage valve in a two-stage embodiment, and against an additional third-stage valve in a three-stage embodiment, each valve of which includes a plunger-actuated diaphragm that urges an actuator to open a ball valve at a selected pressure to allow fluid to flow out of the regulator at a desired and much-reduced pressure.