Pressure-regulating valve with an integrated pressure gauge

A pressure-regulating valve with an integrated pressure gauge comprises

• a body being tubular and having
• a proximal end;
• a distal end;
• an inlet opening being formed on the proximal end;
• an adjustment opening being formed on the distal end;
• an inner chamber having
• a narrow chamber communicating with the inlet opening;
• and
• a wide chamber communicating with the narrow chamber and the adjustment opening;
• an outer surface;
• an outlet being a short tube, being formed on and protruding from the outer surface of the body, communicating with the narrow chamber;
• and
• a seat being formed on and protruding in form the inner surface of the body between the inlet opening and the outlet;
• an inlet nipple being tubular, being connected to the body and having
• a distal end being open;
• a proximal end being mounted in the inlet opening of the body;
• an inner surface;
• an outer surface;
• and
• multiple sliding tabs being formed longitudinally on the inner surface of the inlet nipple, and each sliding tab having a thick end being near the distal end of the inlet nipple;
• a pressure-control device being movably mounted inside the body and having
• a push rod being straight and having
• a gas cavity being tubular, being partially larger than the seat, being mounted slidably in the inlet nipple between the sliding tabs, sliding smoothly between the sliding tabs and having
• a distal end;
• a proximal end corresponding to and being larger than the seat;
• an open end;
• and
• an inner space;
• and
• an extension rod being smaller than the seat and having
• a proximal end being connected to the proximal end of the gas cavity;
• and
• a distal end extending through the seat into the wide chamber of the body;
• a pressure-control O-ring being mounted around the proximal end of the gas cavity and being larger than the seat;
• a pressure-regulating disk being mounted slidably in and protruding from the gas cavity, being movably mounted between the sliding tabs and having
• a disk being conical, being movably mounted between the sliding tabs, being larger than the gas cavity and having
• a conical surface;
• and
• a bottom;
• and
• a shaft being formed coaxially on and protruding from the bottom of the disk, corresponding to and being slidably mounted in the inner space of the gas cavity, and having a distal end;
• and
• a piston being mounted slidably inside the wide chamber of the body and having
• a head corresponding to and being mounted slidably in the inner surface of the wide chamber of the body and having
• a front surface;
• a rear surface;
• a sidewall having a groove being formed around the sidewall;
• a piston seal corresponding to and being mounted in the groove in the sidewall;
• and
• at least one piston gas path being formed through the head and having an input opening being formed on the front surface of the head and communicating with the inner space of the body;
• and
• a rod being formed coaxially on and protruding from the rear surface of the head and having
• an inner space communicating with the piston gas path;
• a proximal end is mounted coaxially on the rear surface of the head;
• a distal end;
• and
• an inner surface;
• and
• a knob assembly having
• a knob being mounted rotatably on the adjustment end of the body and having an inner surface;
• a pressure gauge seat being mounted in the knob and having
• a connecting surface connecting to the knob and having a center;
• a connecting hole being formed transversely through the center of the connecting surface;
• and
• a display surface being transparent, being formed on the pressure gauge seat corresponding to the connecting surface of the pressure gauge seat;
• and
• a pressure gauge being a gas pressure reading and displaying device, being mounted on the rod in the pressure gauge seat, corresponding to the display surface and showing gas pressure inside the body.