Three-in-one valve and control system
First Claim
1. A three-in-one valve comprising:
- an inlet shutoff valve for shutting off flow to an inlet of said valve;
an outlet shutoff valve for shutting off flow into an outlet of said valve; and
a control valve for opening and closing said valve.
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Abstract
The present invention relates to a three-in-one valve comprising an inlet shutoff valve for shutting off flow to an inlet of the valve, an outlet shutoff valve for shutting off flow into an outlet of the valve and a control valve for opening and closing the valve. During operation, the control valve can be opened and closed while the inlet shut off valve and outlet shut off valve are in an open position. The inlet shutoff valve and outlet shutoff can be closed for preventing flow into the control valve, thereby allowing the control valve to be serviced without draining of an attached fluid system, such as a radiator. In one embodiment, the three-in-one valve can be used to provide individual zone control for an individual radiator in a multi-radiator and boiler recirculating system.
53 Citations
21 Claims
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1. A three-in-one valve comprising:
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an inlet shutoff valve for shutting off flow to an inlet of said valve; an outlet shutoff valve for shutting off flow into an outlet of said valve; and a control valve for opening and closing said valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. Use of a three-in-one valve for controlling fluid flow in a boiler recirculation system wherein said three-in-one valve comprises:
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an inlet shutoff valve for shutting off flow to an inlet of said valve; an outlet shutoff valve for shutting off flow into an outlet of said valve; and a control valve for opening and closing said valve. - View Dependent Claims (19, 20, 21)
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Specification