Hydronic expansion tank assembly

Patent metadata

Field	Value
Publication number	US-12209758-B2
Application number	US-202117563369-A
Country	US
Kind code	B2
Filing date	Dec 28, 2021
Priority date	Oct 25, 2021
Publication date	Jan 28, 2025
Grant date	Jan 28, 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 unitary 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 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;
a third valve member located adjacent said drain port;
an expansion tank coupled to a union adaptor;
said union adaptor is coupled to a locking nut that is coupled to said fifth port;
a locking joint coupled between said locking nut and a port adaptor that is coupled to said fifth port; and
a sealing member positioned between said locking joint and said port adaptor.

2. The expansion tank assembly of claim 1 , further including an air separator coupled to said first valve member.

3. The expansion tank assembly of claim 1 , further including a sealing member positioned between said port adaptor and said fifth port.

4. 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 unitary body.

5. 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.

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

7. 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.

8. 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 portions, 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;
a third valve member adjacent to said drain port;
a port adaptor coupled to said fifth port;
a locking joint coupled to said port adaptor;
a locking nut coupled to said locking joint;
an expansion tank coupled to a union adaptor that is coupled to said locking nut; and
a sealing member positioned between said port adaptor and said fifth port.

9. The plumbing assembly of claim 8 , including a sealing member positioned between said locking joint and said port adaptor.

10. The plumbing assembly of claim 9 , including a sealing member positioned between said union adaptor and said locking joint.

11. The plumbing assembly of claim 8 , wherein said isolation mounting arm is brass.

12. 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;
a third valve member adjacent to said drain port;
an expansion tank coupled to a union adaptor that is coupled to said fifth port;
a port adaptor coupled to said fifth port; and
a sealing member positioned between said port adaptor and said fifth port.

13. The hydronic system of claim 12 , including a locking joint that is positioned between said port adaptor and a locking nut.

14. The hydronic system of claim 13 , wherein said union adaptor is coupled to said locking nut.

15. The hydronic system of claim 12 , 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

• 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

• F24D19/088

  Draining arrangements · CPC title

• F24D3/1083

  Filling valves or arrangements for filling · CPC title

• F24D2220/0271

  Valves · CPC title