Back to results
US 10,683,937 B2Granted
Butterfly valve
AssigneeHayward Industries, Inc.
InventorsPaul M. Gutmann, Joshua Lee Hoots, Gary A. Moren, Jon Terence Stone
Life of this patent
Estimating the term…
Abstract
Exemplary embodiments are directed to butterfly valves, generally including a body assembly. The body assembly generally includes a body, a disc rotationally disposed inside an opening of the body, a bearing disposed inside the disc and the body, and a stem passing through the disc, the bearing and the body. The bearing generally includes an internal bearing edge. The stem generally includes an external stem edge to engage the internal bearing edge to prevent stem blowout from the body. Methods of assembling and positioning a butterfly valve are also provided.
Claims24
A butterfly valve, comprising:
- a body assembly, the body assembly including a body, a disc rotationally disposed inside an opening of the body, a bearing disposed inside the disc and the body, and a stem passing through the disc, the bearing and the body;
- and
- a seal retainer positioned within a corresponding disc bore in the disc and a corresponding liner bore in a liner,
- wherein the bearing includes an internal bearing edge provided as an internal bearing step,
- wherein the stem includes a first external stem edge,
- wherein the first external stem edge forms a step, the step abutting and engaging the internal bearing step when the butterfly valve is assembled to retain the stem along a vertical axis and prevent stem blowout from the body along the vertical axis,
- wherein the stem includes a second external stem edge to engage the seal retainer to position the seal retainer within the corresponding liner bore in the liner,
- wherein the stem defines a first section and a second section connected at the first external stem edge, and a third section connected to the second section at the second external stem edge, and
- wherein the first section, the second section, and the third section of the stem define different external configurations.
6 more elements
A method of assembling a butterfly valve, comprising:
- providing a body assembly, the body assembly including a body defining an opening, a disc, a bearing, a liner, and a stem, wherein (a) the bearing includes an internal bearing step, (b) the stem includes a first external stem edge forming a step, (c) the stem defines a first section and a second section connected at the first external stem edge, and a third section connected to the second section at a second external stem edge, and (d) the first section, the second section, and the third section of the stem define different external configurations,
- positioning a seal retainer within a disc bore in the disc,
- positioning the disc within the opening of the body,
- passing the stem through a body bore and the disc bore,
- positioning the seal retainer within a corresponding liner bore in the liner by engaging the seal retainer with the second external stem edge of the stem when passing the stem through the body bore and the disc bore, and
- positioning the bearing through the body bore and around the stem to abut and engage the internal bearing step of the bearing with the step of the stem when the butterfly valve is assembled to retain the stem along a vertical axis and prevent stem blowout from the body along the vertical axis.
3 more elements
A butterfly valve, comprising:
- a body assembly, the body assembly including a body, a disc rotationally disposed inside an opening of the body, a bearing disposed inside the disc and the body, a gland, and a stem passing through the disc, the bearing and the body;
- and
- a seal retainer positioned within a corresponding disc bore in the disc and a corresponding liner bore in a liner,
- wherein the bearing includes an internal bearing step,
- wherein the stem includes a first external stem edge forming a step to abut and engage the internal bearing step when the butterfly valve is assembled to retain the stem along a vertical axis and prevent stem blowout from the body along the vertical axis, and
- wherein the gland is positioned against an internal surface of the body to prevent stem blowout from the body,
- wherein the stem includes a second external stem edge to engage the seal retainer to position the seal retainer within the corresponding liner bore in the liner,
- wherein the stem defines a first section and a second section connected at the first external stem edge, and a third section connected to the second section at the second external stem edge, and
- wherein the first section, the second section, and the third section of the stem define different external configurations.
6 more elements
A method of assembling a butterfly valve, comprising:
- providing a body assembly, the body assembly including a body defining an opening, a disc, a bearing, a liner, a gland, and a stem, wherein (a) the bearing includes an internal bearing step, (b) the stem includes a first external stem edge forming a step, (c) the stem defines a first section and a second section connected at the first external stem edge, and a third section connected to the second section at a second external stem edge, and (d) the first section, the second section, and the third section of the stem define different external configurations,
- positioning a seal retainer within a disc bore in the disc,
- positioning the disc within the opening of the body,
- passing the stem through a body bore and the disc bore,
- positioning the seal retainer within a corresponding liner bore in the liner by engaging the seal retainer with the second external stem edge of the stem when passing the stem through the body bore and the disc bore,
- positioning the bearing through the body bore and around the stem to abut and engage the internal bearing step of the bearing with the step of the stem when the butterfly valve is assembled to retain the stem along a vertical axis and prevent stem blowout from the body along the vertical axis, and
- positioning the gland against an internal surface of the body to prevent stem blowout from the body.
4 more elements
A butterfly valve, comprising:
- a body assembly, the body assembly including (i) a body, (ii) a disc rotationally disposed inside an opening of the body, (iii) a bearing disposed inside the disc and the body, (iv) a stem passing through the disc, the bearing and the body, and (v) a seal retainer positioned within a corresponding disc bore in the disc and a corresponding liner bore in a liner,
- wherein the bearing includes an internal bearing edge,
- wherein the stem includes a first external stem edge to engage the internal bearing edge to prevent stem blowout from the body,
- wherein the stem includes a second external stem edge to engage the seal retainer to position the seal retainer within the corresponding liner bore in the liner,
- wherein the stem defines a first section and a second section connected at the first external stem edge, and a third section connected to the second section at the second external stem edge, and
- wherein the first section, the second section, and the third section of the stem define different external configurations.
3 more elements
A method of assembling a butterfly valve, comprising:
- providing a body assembly, the body assembly including (i) a body defining an opening, (ii) a disc, (iii) a bearing, (iv) a stem, (v) a seal retainer, and (vi) a liner, wherein (a) the bearing includes an internal bearing edge, (b) the stem includes a first external stem edge to engage the internal bearing edge, (c) the stem defines a first section and a second section connected at the first external stem edge, and a third section connected to the second section at a second external stem edge, and (d) the first section, the second section, and the third section of the stem define different external configurations,
- positioning the seal retainer within a corresponding disc bore in the disc and a corresponding liner bore in the liner, the stem including a second external stem edge to engage the seal retainer to position the seal retainer within the corresponding liner bore in the liner,
- positioning the disc within the opening of the body,
- passing the stem through a body bore and the disc bore, and
- positioning the bearing through the body opening and around the stem to engage the internal bearing edge of the bearing with the first external stem edge to prevent stem blowout from the body.
2 more elements
A butterfly valve, comprising:
- a body assembly, the body assembly including (i) a body defining a threaded counter bore, (ii) a disc rotationally disposed inside an opening of the body, (iii) a bearing disposed inside the disc and the body, the bearing including an internal bearing step, (iv) a gland having threads, (v) a stem passing through the disc, the bearing and the body, and (vi) a seal retainer positioned within a corresponding disc bore in the disc and a corresponding liner bore in a liner,
- wherein the stem includes a first external stem edge forming a step to abut and engage the internal bearing step when the butterfly valve is assembled to retain the stem along a vertical axis and prevent stem blowout from the body along the vertical axis,
- wherein the gland threadedly engages the threaded counter bore and is positioned against an internal surface of the body to prevent stem blowout from the body,
- wherein the stem includes a second external stem edge to engage the seal retainer to position the seal retainer within the corresponding liner bore in the liner,
- wherein the stem defines a first section and a second section connected at the first external stem edge, and a third section connected to the second section at the second external stem edge, and
- wherein the first section, the second section, and the third section of the stem define different external configurations.
3 more elements
A method of assembling a butterfly valve, comprising:
- providing a body assembly, the body assembly including a body defining a threaded counter bore and an opening, a disc, a bearing, a liner, a gland having threads, a stem, and a seal retainer, wherein (a) the bearing includes an internal bearing step, (b) the stem includes a first external stem edge forming a step, (c) the stem defines a first section and a second section connected at the first external stem edge, and a third section connected to the second section at a second external stem edge, and (d) the first section, the second section, and the third section of the stem define different external configurations,
- positioning the seal retainer within a disc bore in the disc,
- positioning the disc within the opening of the body,
- passing the stem through a body bore and the disc bore,
- positioning the seal retainer within a corresponding liner bore in the liner by engaging the seal retainer with the second external stem edge of the stem when passing the stem through the body bore and the disc bore,
- positioning the bearing through the body bore and around the stem,
- engaging the threads of the gland with the threaded counter bore, and
- positioning the gland against an internal surface of the body to prevent stem blowout from the body.
5 more elements
Dependencies are inferred from the claim text.