Hydronic expansion tank assembly

Patent metadata

Field	Value
Publication number	US-12326264-B2
Application number	US-202418770772-A
Country	US
Kind code	B2
Filing date	Jul 12, 2024
Priority date	Oct 25, 2021
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

An isolation mounting arm for use with an expansion tank has a passageway with a first end portion, a second end portion, and a medial portion located between the first end portion and the second end portion with the drain port located at the terminal end of the second end portion. A first tee is located in the first end portion with oppositely disposed first and second ports. A second tee is located in the second end portion, with oppositely disposed fourth and fifth ports. A first valve member is coupled to the first port, a second valve member is coupled to the second port, and a third valve member is located adjacent to the drain port. An expansion tank is coupled to either the fourth port or the fifth port with a plug coupled to the other port.

First claim

The invention claimed is:

1. An expansion tank assembly, comprising:
a body having a passageway with a first end portion, a second end portion, and a medial portion located between said first end portion and said second end portion, including:
a flange at a terminal end of said first end portion;
a first tee located in said first end portion, said first tee including oppositely disposed first and second ports;
a third port located in the medial section;
a drain port located at a terminal end of said second end portion;
a second tee located in said second end portion, said second tee including oppositely disposed fourth and fifth ports;

a first valve member coupled to said first port;
a second valve member coupled to said second port;
a third valve member located adjacent said drain port; and
an expansion tank coupled to one of said fourth or fifth ports.

2. The expansion tank assembly of claim 1 , further including a pressure gauge coupled to said body.

3. The expansion tank assembly of claim 1 , wherein said flange portion of said body is coupled to a mounting bracket.

4. The expansion tank assembly of claim 3 , further including a cap positioned in said passageway between said flange and said mounting bracket to close said passageway at said terminal end of said first end portion of said unitary body.

5. The expansion tank assembly of claim 1 , further including an air vent coupled to said body.

6. The expansion tank assembly of claim 1 , wherein said drain port includes a bonnet coupled to said terminal end of said second end portion of said body.

7. The expansion tank assembly of claim 1 , wherein said first valve member, said second valve member, and said third valve member are all ball valves.

8. The expansion tank assembly of claim 1 , wherein said body is made from brass.

9. The expansion tank assembly of claim 1 , wherein said first port supplies a closed loop hydronic system and said second port couples to the fluid supply line.

10. A plumbing assembly for a hydronic system with an expansion tank, comprising:
an isolation mounting arm having a fluid passageway with a first end portion, a second end portion, and a medial portion located between said first end portion and said second end portion, including:
a mounting bracket at the terminal end of said first end portion;
a first tee located in said first end portion, said first tee including oppositely disposed first and second ports;
a third port located in the medial section;
a drain port located at the terminal end of said second end portion;
a second tee located in said second end portion, said second tee including oppositely disposed fourth and fifth ports;

a first valve member coupled to said first port;
a second valve member coupled to said second port; and
a third valve member adjacent to said drain port.

11. The plumbing assembly of claim 10 , including an expansion tank coupled to said fourth or said fifth port.

12. The plumbing assembly of claim 10 , including a pressure gauge coupled to said isolation mounting arm.

13. The plumbing assembly of claim 10 , including an air vent coupled to said isolation mounting arm.

14. The plumbing assembly of claim 10 , including an air separator coupled to said first valve member.

15. The plumbing assembly of claim 10 , wherein said isolation mounting arm is brass.

16. A hydronic system, comprising:
an incoming fluid supply line;
a supply line for a hydronic system;
an isolation mounting arm having a fluid passageway with a first end portion, a second end portion, and a medial portion located between said first end portion and said second end portion, including:
a first tee located in said first end portion, said first tee including a first port coupled to said supply line for the hydronic system and an oppositely disposed second port coupled to said incoming fluid supply line;
a third port located in the medial portion;
a drain port located at the end of said second end portion;
a second tee located in said second end portion, said second tee including oppositely disposed fourth and fifth ports;

a first valve member coupled to said first port;
a second valve member coupled to said second port; and
a third valve member adjacent to said drain port.

17. The hydronic system of claim 16 , including an expansion tank coupled to either of said fourth or said fifth ports.

18. The hydronic system of claim 16 , including a mounting bracket coupled to said first end portion of said isolation mounting arm.

19. The hydronic system of claim 16 , including an air vent and a pressure gauge coupled to said isolation mounting arm.

20. The hydronic system of claim 16 , wherein said first and second ports include coupling sleeves to couple the first and second ports to the first and second valve members.

Assignees

• Nibco

Inventors

• Mason Christopher W

Classifications

• F24D19/1051

  for domestic hot water · CPC title

• E03B7/12

  by preventing freezing · CPC title

• F16K11/087

  with spherical plug · CPC title

• F16K17/02

  opening on surplus pressure on one side; closing on insufficient pressure on one side (check valves F16K15/00) · CPC title

• F24D2220/046

  Pressure sensors · CPC title