Gas vent valve
AssigneeInternational Valve Manufacturing, L.L.C.
InventorsRudolph Joseph Lang, III, Anthony John Witheridge
Life of this patent
Estimating the term…
Abstract
A gas vent valve has a valve body having a first end, a second end, and a sidewall having a generally constant inner diameter from the first end to a normal operating liquid level. A spacer is positioned within the valve body and has an aperture formed therethrough. A control float is positioned within the valve body and has an outer diameter that is smaller than the inner diameter of the valve body and larger than the inner diameter of the spacer. A top float is positioned within the valve body, above the control float, and has an outer diameter that is smaller than the inner diameter of the spacer. A side port can extend from the sidewall and be positioned below the spacer and generally adjacent the top float with the valve in the open condition.
Claims50
A gas vent valve, comprising:
- a valve body having a first end, a second end, and a sidewall having a generally constant inner diameter from the first end to a normal operating liquid level;
- a control float positioned within the valve body;
- a top float positioned within the valve body, above the control float;
- a spacer positioned within the valve body, proximate to the first end of the valve body, the spacer having an aperture formed therethrough configured to receive the top float;
- and
- a side port extending from the sidewall, the side port positioned below the spacer and generally adjacent the top float with the valve in the open condition.
A gas vent valve, comprising:
- a valve body having a first end, a second end, and a sidewall having a generally constant inner diameter from the first end to a normal operating liquid level;
- a flange attached to the first end of the valve body;
- a control float positioned within the valve body;
- a top float positioned within the valve body, above the control float;
- a spacer positioned within the valve body, proximate to the first end of the valve body, the spacer having an aperture formed therethrough configured to receive the top float;
- and
- a side port defined by an aperture extending through the flange and the spacer.
A gas vent valve, comprising:
- a valve body having a first end, a second end, and a sidewall having a generally constant inner diameter from the first end to a normal operating liquid level;
- a spacer positioned within the valve body, proximate to the first end of the valve body, the spacer having an aperture formed therethrough having an inner diameter;
- a control float positioned within the valve body, the control float having an outer diameter that is smaller than the inner diameter of the valve body and larger than the inner diameter of the spacer;
- and
- a top float positioned within the valve body, above the control float, the top float having an outer diameter that is smaller than the inner diameter of the spacer.
A method of assembling a gas vent valve, comprising the steps of:
- providing a valve body having a first end, a second end, and a sidewall having a generally constant inner diameter from the first end to a normal operating liquid level;
- attaching a bottom flange, having an inlet aperture formed therein, to the second end of the valve body;
- positioning a control float within the valve body;
- positioning a top float within the valve body, above the control float;
- inserting a spacer into the valve body proximate the first end of the valve body, the spacer having an aperture corresponding to a desired maximum pressure rating of the gas vent valve and having an inner diameter that is greater than an outer diameter of the top float and less than an outer diameter of the control float;
- and
- securing a top flange to the first end of the valve body, the top flange having an outlet aperture formed therethrough.
Dependencies are inferred from the claim text.