Tide Gate Check Valve with an Enlarged Integral Annular Wall

A fluid control system comprising:

• (1) a check valve comprising:
• (a) a tubular valve body comprising a downstream end and an upstream end;
• and
• (b) a tubular sleeve positioned within the valve body, the tubular sleeve bounding a longitudinally-extending flow-through passage for fluids, said sleeve having an upstream fluid inlet region and a downstream fluid outlet region,
• wherein the downstream end or upstream end of the tubular valve body comprises an enlarged integral annular wall thickness having an outside diameter that is greater than an outside diameter of remaining portions of the tubular valve body;
• and
• (2) a receiving conduit;
• wherein the enlarged integral annular wall thickness of the tubular valve body has an outside diameter that is greater than at least an inside diameter of the receiving conduit, and the remaining portions of the tubular valve body extending from the enlarged integral annular wall thickness have an outside diameter that is less than the inside diameter of the receiving conduit, and
• wherein the enlarged integral annular wall thickness of the tubular valve body is compressed against and forms a leak tight seal with a first or second end of the receiving conduit, and the remaining portions of the tubular valve body extend into the receiving conduit.

A method of forming a fluid control system comprising:

• (i) inserting a check valve into a receiving conduit, the check valve comprising:
• (a) a tubular valve body comprising a downstream end and an upstream end;
• and
• (b) a tubular sleeve positioned within the valve body, the tubular sleeve bounding a longitudinally-extending flow-through passage for fluids, said sleeve having an upstream fluid inlet region and a downstream fluid outlet region,
• wherein the downstream end or upstream end of the tubular valve body comprises an enlarged integral annular wall thickness having an outside diameter that is greater than an outside diameter of remaining portions of the tubular valve body;
• and
• (ii) compressing the enlarged integral annular wall thickness of the tubular valve body against a first or second end of the receiving conduit to form a leak tight seal, wherein the remaining portions of the tubular valve body extend into the receiving conduit.