TWO-STAGE GAS REGULATING ASSEMBLY

摘要

A gas regulating assembly controlling the pressure of gas from a gas reservoir to a pneumatically-operated device includes a primary housing surrounding a pair of gas regulators. The gas regulators are aligned in series within the primary housing between an inlet to receive high pressure gas and an outlet for releasing a controlled pressure gas. Each gas regulator includes a sealable valve that defines an input and an output, with each valve including a piston having a cylinder and a rod. A spring is adjacent said piston to force said piston cylinder away from said corresponding inlet, and a shim proximate said spring to adjust the force applied by said spring on said piston cylinder. Each valve allows gas to traverse the corresponding gas regulator until a predetermined pressure is achieved in the respective outlet of the respective gas regulator, at which point the predetermined pressure will close the corresponding valve.