A gas pressure regulator for use with gas delivery systems is provided. The gas pressure regulator includes, in one form, a body defining a proximal end portion, a distal end portion, and a central portion having a longitudinal axis extending therethrough. An inlet is disposed proximate the distal end portion of the body, the inlet defining an inlet axis extending therethrough, and the inlet axis being offset from the longitudinal axis. A cavity is disposed within the central portion of the body, and defines an upper portion and a lower portion, the cavity centrally aligned with the longitudinal axis. The gas pressure regulator further includes a channel extending between the inlet and the cavity, and a guide disposed within the lower portion of the cavity in abutment with a bottom surface of the cavity substantially perpendicular to the lateral axis.

A pressurized gas containing system has a cowling and mounting ring which supports a valve and regulator on a cylinder containing gas under pressure.

A high-pressure labor-saving pressure regulator includes a main body, valve core assembly, main piston assembly, balance piston, and pressure regulating handle. The inside of the main body has a pressure reducing space, an input channel, and an output channel. The pressure reducing space includes a first subspace and a second subspace communicated by a seat port. The valve core member is used to regulate an opening of the seat port, and two ends of a poppet spring are respectively abutted against the valve core member and the main body. The main piston assembly includes a piston rod, a main piston, and a pressure regulating spring. A space between a bottom surface of the main piston and the main body, and a space between a top surface of the balance piston and the main body, allows fluid to flow into the top surface of the balance piston.