Remotely readable valve position indicators
First Claim
1. An apparatus, comprising:
- a valve body;
a valve stem to linearly move between a first position and a second position to control fluid flow through the valve body; and
a valve position indicator, comprising;
a wireless identifier device fixed to a stem container through which the valve stem passes, the stem container fixed to the stem, the wireless identifier device to move with the valve stem, wherein the wireless identifier device is to convey information indicative of the position of the valve stem to a remote wireless electronic reader; and
a shielding body to prevent the wireless identifier device from conveying the information to the remote wireless electronic reader when the valve stem is in the first position and to enable the wireless identifier device to convey the information to the remote wireless electronic reader when the valve stem is in the second position.
1 Assignment
0 Petitions
Accused Products
Abstract
Remotely readable valve position indicators and related methods are described. An example apparatus in accordance with the teachings of this disclosure includes a valve body, a valve stem and a fluid flow control apparatus coupled to the valve stem. The fluid flow control apparatus is longitudinally displaceable between a first position and a second position to control fluid flow through a flow aperture of the valve body. The apparatus also includes a valve position indicator including an identifier device coupled to the valve stem. In the first position, the wireless identifier device associated with a first value indicative of the first position of the fluid flow control apparatus. In the second position, the wireless identifier device associated with a second value indicative of the second position of the fluid flow control apparatus.
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Citations
25 Claims
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1. An apparatus, comprising:
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a valve body; a valve stem to linearly move between a first position and a second position to control fluid flow through the valve body; and a valve position indicator, comprising; a wireless identifier device fixed to a stem container through which the valve stem passes, the stem container fixed to the stem, the wireless identifier device to move with the valve stem, wherein the wireless identifier device is to convey information indicative of the position of the valve stem to a remote wireless electronic reader; and a shielding body to prevent the wireless identifier device from conveying the information to the remote wireless electronic reader when the valve stem is in the first position and to enable the wireless identifier device to convey the information to the remote wireless electronic reader when the valve stem is in the second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, comprising:
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a valve body; a valve stem; and a valve position indicator, comprising; a wireless identifier device directly coupled to the valve stem to move with the valve stem, wherein the wireless identifier device is to convey information indicative of the position of the valve stem to a remote wireless electronic reader; and a shielding body to prevent the wireless identifier device from conveying the information to the remote wireless electronic reader when the valve stem is in a first position and to enable the wireless identifier device to convey the information to the remote wireless electronic reader when the valve stem is in a second position. - View Dependent Claims (11, 12, 13, 14)
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15. An apparatus, comprising:
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a valve body; a valve stem; a fluid flow control apparatus coupled to the valve stem, the fluid flow control apparatus displaceable between a first position and a second position to control fluid flow through a flow aperture of the valve body; and a wireless identifier fixed to the valve stem, the wireless identifier to provide a first value associated with a first position of the fluid flow control apparatus and to provide a second value associated with a second position of the fluid flow control apparatus. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification