BOILER LOOP SYSTEM
A boiler loop system including a primary-secondary piping loop interface apparatus having unitary construction including a flow diversion device, and a drain valve and a drain port in branches from a circumferential sidewall. In an embodiment, supply branch piping and return branch piping connect the primary-secondary piping loop interface apparatus to a boiler and provide attachment points for auxiliary plumbing equipment. In an embodiment, the boiler loop is integrated into the primary loop.
1 . A primary-secondary piping system, comprising:
a primary piping loop;
a near boiler piping loop;
a secondary piping loop;
a primary-near boiler piping loop interface apparatus comprising:
a first tubular fluid conduit having a first circumferential sidewall having a first end and a second end,
first and second neck portions extending substantially perpendicular from the circumferential sidewall and being substantially parallel to each other, wherein each neck portion comprises a drain valve portion extending from the neck portion, including a drain shut-off valve and a drain port, and
first and second flow diversion devices disposed in the first and second neck portions, respectively, wherein each flow diversion device forms a first flow path between the tubular fluid conduit and the neck in a first position and a second flow path between the drain valve portion and the neck in a second position; and
a primary-secondary piping loop interface apparatus comprising:
a second tubular fluid conduit having a second circumferential sidewall having a first end and a second end,
first and second neck portions extending substantially perpendicular from the second circumferential sidewall and being substantially parallel to each other, wherein each neck portion comprises a drain valve portion extending from the neck portion, including a drain shut-off valve and a drain port, and
first and second flow diversion devices disposed in the first and second neck portions, respectively, wherein each flow diversion device forms a first flow path between the second tubular fluid conduit and the neck in a first position and a second flow path between the drain valve portion and the neck in a second position.
2 . The primary-secondary piping system of claim 1 , further comprising a boiler operatively connected to the near boiler piping loop.
3 . The primary-secondary piping system of claim 2 , further comprising a near boiler piping loop circulation pump.
4 . The primary-secondary piping system of claim 3 , wherein the near boiler piping loop circulation pump is incorporated internally within the boiler.
5 . The primary-secondary piping system of claim 3 , wherein the near boiler piping loop circulation pump is external to the boiler.
6 . The primary-secondary piping system of claim 5 , wherein the first or second neck portion of the primary-near boiler piping loop interface apparatus comprises a flange to interface with the near boiler piping loop circulation pump.
7 . The primary-secondary piping system of claim 6 , wherein the flange is rotatable.
8 . The primary-secondary piping system of claim 1 , further comprising a secondary piping loop circulation pump.
9 . The primary-secondary piping system of claim 8 , wherein the first or second neck portion of the primary-secondary piping loop interface apparatus comprises a flange to interface with the secondary piping loop circulation pump.
10 . The primary-secondary piping system of claim 9 , wherein the flange is rotatable.
11 . The primary-secondary piping system of claim 1 , further comprising a primary loop circulation pump operatively connected to the primary piping loop.
12 . The primary-secondary piping system of claim 1 , further comprising a plurality of secondary piping loops comprising a plurality of primary-secondary piping loop interface apparatus.
13 . The primary secondary piping system of claim 12 , wherein each of the plurality of secondary piping loops constituting a separate heating zone.
14 . The primary-secondary piping system of claim 12 , wherein each of the plurality of secondary piping loops comprises a secondary piping loop circulation pump.
15 . The primary-secondary piping system of claim 1 , wherein the primary-near boiler piping loop interface apparatus and the primary-secondary piping loop interface apparatus are each constructed as a single unit.
16 . A primary-secondary piping system, comprising:
a primary piping loop;
a secondary piping loop; and
a primary-secondary piping loop interface apparatus comprising:
a tubular fluid conduit having a circumferential sidewall having a first end and a second end,
first and second neck portions extending substantially perpendicular from the circumferential sidewall and being substantially parallel to each other, wherein each neck portion comprises a drain valve portion extending from the neck portion, including a drain shut-off valve and a drain port, and
first and second flow diversion devices disposed in the first and second neck portions, respectively, wherein each flow diversion device forms a first flow path between the tubular fluid conduit and the neck in a first position and a second flow path between the drain valve portion and the neck in a second position.
17 . The primary-secondary piping system of claim 16 , further comprising a boiler operatively connected to the primary piping loop.
18 . The primary-secondary piping system of claim 17 , further comprising a primary piping loop circulation pump.
19 . The primary-secondary piping system of claim 18 , wherein the primary piping loop circulation pump is incorporated internally within the boiler.
20 . The primary-secondary piping system of claim 18 , wherein the primary piping loop circulation pump is external to the boiler.
21 . The primary-secondary piping system of claim 16 , further comprising a secondary piping loop circulation pump.
22 . The primary-secondary piping system of claim 21 , wherein the first or second neck portion of the primary-secondary piping loop interface apparatus comprises a flange to interface with the secondary piping loop circulation pump.
23 . The primary-secondary piping system of claim 22 , wherein the flange is rotatable.
24 . The primary-secondary piping system of claim 16 , further comprising a plurality of secondary piping loops comprising a plurality of primary-secondary piping loop interface apparatus.
25 . The primary secondary piping system of claim 24 , wherein each of the plurality of secondary piping loops constituting a separate heating zone.
26 . The primary-secondary piping system of claim 24 , wherein each of the plurality of secondary piping loops comprises a secondary piping loop circulation pump.
27 . The primary-secondary piping system of claim 16 , wherein the primary-secondary piping loop interface apparatus is constructed as a single unit.