Abstract: A first stage pressure regulator is provided. A valve body has an inlet and an outlet that define a pressure chamber therebetween. The valve body defines a pressure compensation chamber having an opening fluidly communicating the pressure compensation chamber with the surrounding water. The first stage pressure regulator comprises an inlet tubular union removably received into the inlet. A removable high pressure orifice body defines an orifice therethrough. The orifice body is carried by the valve body proximate the inlet. A valve seat is within the valve body.

Abstract: A first stage pressure regulator is provided. A valve body has an inlet and an outlet that define a pressure chamber therebetween. The valve body defines a pressure compensation chamber having an opening fluidly communicating the pressure compensation chamber with the surrounding water. The first stage pressure regulator comprises an inlet tubular union removably received into the inlet. A removable high pressure orifice body defines an orifice therethrough. The orifice body is carried by the valve body proximate the inlet. A valve seat is within the valve body.

Abstract: A first stage pressure regulator is provided. A valve body has an inlet and an outlet that define a pressure chamber therebetween. The valve body defines a pressure compensation chamber having an opening fluidly communicating the pressure compensation chamber with the surrounding water. The first stage pressure regulator comprises an inlet tubular union removably received into the inlet. A removable high pressure orifice body defines an orifice therethrough. The orifice body is carried by the valve body proximate the inlet. A valve seat is within the valve body.

Abstract: A first stage pressure regulator is provided. A valve body has an inlet and an outlet that define a pressure chamber therebetween. The valve body defines a pressure compensation chamber having an opening fluidly communicating the pressure compensation chamber with the surrounding water. The first stage pressure regulator comprises an inlet tubular union removably received into the inlet. A removable high pressure orifice body defines an orifice therethrough. The orifice body is carried by the valve body proximate the inlet. A valve seat is within the valve body.

Abstract: A first stage pressure regulator is provided. A valve body has an inlet and an outlet that define a pressure chamber therebetween. The valve body defines a pressure compensation chamber having an opening fluidly communicating the pressure compensation chamber with the surrounding water. The first stage pressure regulator comprises an inlet tubular union removably received into the inlet. A removable high pressure orifice body defines an orifice therethrough. The orifice body is carried by the valve body proximate the inlet. A valve seat is within the valve body.

Abstract: A first stage pressure regulator is provided. The regulator includes a valve body having an inlet and an outlet coupled by a pressure chamber. A pressure compensation chamber fluidly communicates with the surrounding water. A valve member is slidably carried by the valve body between an open state in which fluid is permitted to flow between the inlet and outlet and a closed state in which fluid is prevented from flowing between the inlet and outlet. The valve member has an expansion head that is operably acted upon by the surrounding water within the pressure compensation chamber to bias the valve member toward the open state. The regulator includes an annular insulating bushing within the compensation chamber that covers a portion of the valve body defining a portion of the pressure compensation chamber to insulate the valve body from the water within the pressure compensation chamber.

Abstract: A first stage pressure regulator is provided. A valve body has an inlet and an outlet that define a pressure chamber therebetween. The valve body defines a pressure compensation chamber having an opening fluidly communicating the pressure compensation chamber with the surrounding water. The first stage pressure regulator comprises an inlet tubular union removably received into the inlet. A removable high pressure orifice body defines an orifice therethrough. The orifice body is carried by the valve body proximate the inlet. A valve seat is within the valve body.

Abstract: A first stage pressure regulator is provided. The regulator includes a valve body having an inlet and an outlet coupled by a pressure chamber. A pressure compensation chamber fluidly communicates with the surrounding water. A valve member is slidably carried by the valve body between an open state in which fluid is permitted to flow between the inlet and outlet and a closed state in which fluid is prevented from flowing between the inlet and outlet. The valve member has an expansion head that is operably acted upon by the surrounding water within the pressure compensation chamber to bias the valve member toward the open state. The regulator includes an annular insulating bushing within the compensation chamber that covers a portion of the valve body defining a portion of the pressure compensation chamber to insulate the valve body from the water within the pressure compensation chamber.

Abstract: Propulsion for boats (10) by jets of compressed air inside a pair of parallel longitudinal channels (11) open underneath, placed below the hull, substantially horizontal, one on each side of a third wider axial channel (13) suitable for formation, as a consequence of the movement of said boat, of a cushion of air that sustains the hull when sliding over the water.