Check valve and method of forming a check valve

A check valve, comprising:

• a hollow body, the hollow body including:
• an inlet end;
• an outlet end, the inlet end having a first connector and the outlet end having a second connector, wherein the outlet end of the hollow body includes a valve seat on an inner surface of the hollow body;
• connecting projections disposed along a length of an outer surface;
• and
• a protrusion extending from the outer surface, the protrusion corresponding to a direction of fluid flow;
• a valve assembly, the valve assembly including:
• a poppet disposed in the hollow body, the poppet having a first end disposed towards the inlet end, a second end disposed at the valve seat, and a poppet body extending between the first end of the poppet and the second end of the poppet;
• a spring disposed in the hollow body, the spring having a first end coupled to the first end of the poppet and a second end disposed on a ledge of the inner surface of the hollow body, the spring extending coaxial to the poppet body;
• and
• an O-ring coupled to the second end of the poppet;
• wherein the spring is disposed between the first end of the poppet and the ledge of the inner surface of the hollow body, such that the O-ring and the second end of the poppet seal the hollow body at the valve seat;
• and
• a sacrificial anode, wherein the sacrificial anode is a washer, the washer being configured to corrode at a rate faster than the spring, and wherein the spring is formed of a first material and the washer is formed of a second material, the first material being different from the second material.

A check valve, comprising:

• a single piece hollow body configured for a fluid flow from an inlet end to an outlet end, the outlet end including a valve seat on an inner surface;
• a spring disposed in the single piece hollow body;
• a poppet disposed in the single piece hollow body, the poppet having a first end coupled to the spring and a second end disposed at the valve seat, the poppet extending coaxial to the spring such that the poppet is held in tension by the spring;
• a sacrificial anode washer disposed at an end of the spring, the sacrificial anode washer being configured to corrode at a rate faster than the spring;
• and
• an O-ring disposed at the valve seat and coupled to the second end of the poppet;
• wherein the single piece hollow body includes connecting projections disposed along a length of an outer surface;
• wherein the spring is formed of a first material, and the sacrificial anode washer is formed of a second material, the first material being different from the second material.

A method of operating a check valve, the method comprising:

• inserting the check valve in a flow path, the check valve including:
• a single piece hollow body, the single piece hollow body including:
• an inlet end;
• an outlet end disposed opposite the inlet end, the inlet end having a first connector and the outlet end having a second connector,
• connecting projections disposed along a length of an outer surface between the first connector at the inlet end and the second connector at the outlet end;
• a protrusion extending from the outer surface, the protrusion corresponding to a direction of fluid flow;
• and
• a sacrificial anode, wherein the sacrificial anode is a washer, the washer being configured to corrode at a rate faster than a spring disposed in the hollow body, and wherein the spring is formed of a first material and the washer is formed of a second material, the first material being different from the second material;
• positioning the check valve in the flow path such that the protrusion is aligned to indicate the direction of fluid flow in the flow path;
• and
• securing the check valve to tubing at the inlet end and the outlet end by inserting the first connector at the inlet end and the second connector at the outlet end into the tubing, and rotating the tubing to engage with the connecting projections.