PURGE/FILL VALVE
First Claim
1. A purge valve comprising:
- a valve body having a first primary loop port, a second primary loop port, a first secondary loop port and a second secondary loop port;
the secondary loop ports disposed at respective ends of a linear secondary loop portion of the valve body;
a primary loop portion of the valve body formed by a pair of closely spaced tees extending from the secondary loop portion;
at least one main valve portion disposed in at least one of the tees between the secondary loop portion and a primary loop port; and
a drain/venting valve portion extending from the main valve portion.
4 Assignments
0 Petitions
Accused Products
Abstract
A purge valve comprising a valve body having a first primary loop port, a second primary loop port, a first secondary loop port and a second secondary loop port is provided. The secondary loop ports are disposed at respective ends or a linear secondary loop portion of the valve body. A primary loop portion of the valve body is formed by a pair of closely spaced tees extending from the secondary loop portion. At least one main valve portion is disposed in a first one of the tees. A drain/venting valve portion extends from the main valve portion. A portion of the secondary loop portion between the tees is shared with the primary loop portion in which flow in a primary loop and a secondary loop are hydraulically separated. A second drain/venting valve portion may be provided in a second one of the tees.
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Citations
12 Claims
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1. A purge valve comprising:
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a valve body having a first primary loop port, a second primary loop port, a first secondary loop port and a second secondary loop port; the secondary loop ports disposed at respective ends of a linear secondary loop portion of the valve body; a primary loop portion of the valve body formed by a pair of closely spaced tees extending from the secondary loop portion; at least one main valve portion disposed in at least one of the tees between the secondary loop portion and a primary loop port; and a drain/venting valve portion extending from the main valve portion. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A purge valve comprising:
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a valve body having a first primary loop port, a second primary loop port, a first purge/fill port and a second purge/fill port; the first primary loop port and second primary loop port disposed at respective ends of a linear primary loop portion of the valve body; a first purge/fill portion and second purge/fill portion of the valve body formed by a pair of closely spaced tees extending from the primary loop portion; a first purge/fill valve portion disposed in a first one of said tees between the primary loop portion and the first purge/fill port; a second purge/fill valve portion disposed in a second one of said tees between the primary loop portion and the second first purge/fill port; a main valve portion disposed in said primary loop portion adjacent to one of said tees, said main valve portion configured to simultaneously close a flow path between said first primary loop port and said second primary loop port while opening a path between at least one of said first primary loop port or second primary loop port and at least one of said tees. - View Dependent Claims (9, 10, 11, 12)
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Specification