Water heater bypass valves and devices thereto

A bypass valve assembly for a fluid heating system, the bypass valve assembly comprising:

• a partition configured to fluidly separate an inlet and an outlet of the fluid heating system;
• a first bypass valve mounted to the partition and configured to transition between (i) a closed state in which a fluid is prevented from flowing through the first bypass valve and (ii) an open state in which the fluid is permitted to flow from the inlet to the outlet through the first bypass valve, the first bypass valve having a first spring configured to transition the first bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a first predetermined pressure;
• and
• a second bypass valve mounted to the partition and configured to transition between (i) a closed state in which a fluid is prevented from flowing through the second bypass valve and (ii) an open state in which the fluid is permitted to flow from the inlet to the outlet through the second bypass valve, the second bypass valve having a second spring configured to transition the second bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a second predetermined pressure, the second predetermined pressure being greater than the first predetermined pressure,
• wherein the first bypass valve comprises a first valve plug having a first cross-sectional area and the second bypass valve comprises a second valve plug having a second cross-sectional area, the second cross-sectional area being less than the first cross-sectional area.

A bypass valve assembly for a fluid heating system, the bypass valve assembly comprising:

• a partition configured to fluidly separate an inlet and an outlet of the fluid heating system;
• a first bypass valve mounted to the partition and configured to transition between (i) a closed state in which a fluid is prevented from flowing through the first bypass valve and (ii) an open state in which the fluid is permitted to flow from the inlet to the outlet through the first bypass valve, the first bypass valve having a first spring configured to transition the first bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a first predetermined pressure;
• and
• a second bypass valve mounted to the partition and configured to transition between (i) a closed state in which a fluid is prevented from flowing through the second bypass valve and (ii) an open state in which the fluid is permitted to flow from the inlet to the outlet through the second bypass valve, the second bypass valve having a second spring configured to transition the second bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a second predetermined pressure, the second predetermined pressure being greater than the first predetermined pressure,
• wherein the first bypass valve comprises a first valve plug having a first cross-sectional area and the second bypass valve comprises a second valve plug having a second cross-sectional area, the second cross-sectional area being greater than the cross-sectional first area.

A bypass valve assembly for a fluid heating system, the bypass valve assembly comprising:

• a partition configured to fluidly separate an inlet and an outlet of the fluid heating system;
• a first bypass valve mounted to the partition and configured to transition between (i) a closed state in which a fluid is prevented from flowing through the first bypass valve and (ii) an open state in which the fluid is permitted to flow from the inlet to the outlet through the first bypass valve, the first bypass valve having a first spring configured to transition the first bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a first predetermined pressure;
• and
• a second bypass valve mounted to the partition and configured to transition between (i) a closed state in which a fluid is prevented from flowing through the second bypass valve and (ii) an open state in which the fluid is permitted to flow from the inlet to the outlet through the second bypass valve, the second bypass valve having a second spring configured to transition the second bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a second predetermined pressure, the second predetermined pressure being greater than the first predetermined pressure,
• wherein at least one of the first spring and the second spring comprises a variable rate spring having two or more spring rates.

A bypass valve assembly for a fluid heating system, the bypass valve assembly comprising:

• a partition configured to fluidly separate an inlet and an outlet of the fluid heating system;
• a first bypass valve mounted to the partition and configured to transition between (i) a closed state in which a fluid is prevented from flowing through the first bypass valve and (ii) an open state in which the fluid is permitted to flow from the inlet to the outlet through the first bypass valve, the first bypass valve having a first spring configured to transition the first bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a first predetermined pressure;
• and
• a second bypass valve mounted to the partition and configured to transition between (i) a closed state in which a fluid is prevented from flowing through the second bypass valve and (ii) an open state in which the fluid is permitted to flow from the inlet to the outlet through the second bypass valve, the second bypass valve having a second spring configured to transition the second bypass valve from the closed state in response to experiencing a pressure that is greater than or equal to a second predetermined pressure, the second predetermined pressure being greater than the first predetermined pressure,
• wherein the first bypass valve and the second bypass valve are concentrically aligned, and
• wherein the first spring comprises a first spring rate and the second spring comprises a second spring rate, the second spring rate being greater than the first spring rate.