Isolation valve with thermoplastic overmolding
First Claim
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1. A fluid isolation valve comprising:
- a metal valve body having a first port and a second port and defining a flow channel between the first and second ports;
an overmolded thermoplastic polymer end surrounding and enclosing a distal portion of one of the first and second ports; and
a flow diversion device disposed in the valve body between the first and second ports and configured to control and alter the flow channel;
wherein the distal portion of one of the first and second ports comprises ribs formed on an outer surface thereof;
wherein at least one of the ribs is substantially parallel with a longitudinal axis of the first or second port and is configured to prevent the overmolded end from rotating about the distal portion of the first or second port to which it is coupled.
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Abstract
The present invention is generally directed to an isolation valve unit including a valve body comprised of a metal, such as brass, and having at least two ports, at least one of the ports including an overmolded thermoplastic end surrounding and enclosing the port. In one embodiment, the thermoplastic end is composed of a polypropylene random (PP-R) material and is securely formed over the port by way of an over molding technique. The valve unit further includes a ball valve accommodated within the valve body and a handle for actuating the ball valve. The isolation valve unit is configured to control the flow of fluids in a plumbing system via actuation of the ball valve.
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Citations
17 Claims
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1. A fluid isolation valve comprising:
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a metal valve body having a first port and a second port and defining a flow channel between the first and second ports; an overmolded thermoplastic polymer end surrounding and enclosing a distal portion of one of the first and second ports; and a flow diversion device disposed in the valve body between the first and second ports and configured to control and alter the flow channel; wherein the distal portion of one of the first and second ports comprises ribs formed on an outer surface thereof; wherein at least one of the ribs is substantially parallel with a longitudinal axis of the first or second port and is configured to prevent the overmolded end from rotating about the distal portion of the first or second port to which it is coupled. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A fluid isolation valve comprising:
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a metal valve body having a first port and a second port and defining a flow channel between the first and second ports; an overmolded thermoplastic polymer end surrounding and enclosing a distal portion of one of the first and second ports; and a flow diversion device disposed in the valve body between the first and second ports and configured to control and alter the flow channel; wherein the distal portion of one of the first and second ports comprises at least one protrusion extending therefrom in a direction substantially parallel to a longitudinal axis of the first or second port, the at least one protrusion is configured to prevent the overmolded end from rotating about the distal portion of the first or second port to which it is coupled. - View Dependent Claims (9, 10)
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11. A fluid isolation valve comprising:
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a metal valve body having a first port and a second port and defining a flow channel between the first and second ports, wherein the distal portion of the first port comprises ribs formed on an outer surface thereof, wherein at least two of the ribs extend along a circumference of the outer surface and are substantially orthogonal to a longitudinal axis of the first port; a flow diversion device disposed in the valve body between the first and second ports and configured to control and alter the flow channel; and an overmolded thermoplastic polymer end surrounding and enclosing the one or more ribs on the distal portion of the first port, wherein the overmolded thermoplastic polymer end comprises polypropylene random (PP-R) material; wherein at least one of the ribs is substantially parallel with a longitudinal axis of the first port and is configured to prevent the overmolded end from rotating about the distal portion of the first port. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification