Pressure reducer

A pressure reducer assembly comprising:

• a pressure reducer body defining at least one pressure reducer chamber along a central axis, the pressure reducer chamber including:
• an inlet section and an outlet section fluidly coupled with the inlet section such that the inlet section and the outlet section allow inlet and outlet of the fluid respectively;
• a spring-operated hollow piston rod having a center along the central axis, a cylindrical inner peripheral surface comprising an inner diameter and a cylindrical outer peripheral surface comprising an outer diameter;
• and
• a diaphragm made of elastic material and adapted to be operatively coupled with the piston rod, wherein the diaphragm has a central hole having a center along a central axis and a diameter;
• wherein, in an unmounted state, the outer diameter of the piston rod is greater than the diameter of the central hole of the diaphragm,
• wherein, in a mounted state, the outer diameter of the piston rod is the same as the diameter of the central hole of the diaphragm,
• wherein the diaphragm is assembled over the piston rod so that the central axis coincides with the central axis, and
• wherein, in the unmounted state, the diameter of the central hole of the diaphragm is equal to the inner diameter of the piston rod.

A pressure reducer assembly comprising:

• a pressure reducer body defining at least one pressure reducer chamber along a central axis, the pressure reducer chamber including:
• an inlet section and an outlet section fluidly coupled with the inlet section such that the inlet section and the outlet section allow inlet and outlet of the fluid respectively;
• a spring-operated hollow piston rod having a center along the central axis, a cylindrical inner peripheral surface comprising an inner diameter and a cylindrical outer peripheral surface comprising an outer diameter;
• and
• a diaphragm made of elastic material and adapted to be operatively coupled with the piston rod, wherein the diaphragm has a central hole having a center along a central axis and a diameter;
• wherein, in an unmounted state, the outer diameter of the piston rod is greater than the diameter of the central hole of the diaphragm,
• wherein, in a mounted state, the outer diameter of the piston rod is the same as the diameter of the central hole of the diaphragm,
• wherein the diaphragm is assembled over the piston rod so that the central axis coincides with the central axis,
• wherein an annular nose is provided adjacent to the diaphragm to press the diaphragm in a direction opposite to a direction of force transmitted by the annular nose upon pressing the diaphragm, when a spring is in an expanded state, and
• wherein the annular nose includes a stop surface which engages with a slant surface of a diaphragm support surface when the spring is in the expanded state.