One-piece self-venting drain valve
Inactive Publication Date: 2008-02-12
WIX FILTRATION
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0008]The present invention provides a new and improved self-venting drain valve for filter assemblies and the like, which self-venting valve is reliable and is configured for ease of assembly and operation. The self-venting drain valve is provided for selectively permitting and preventing draining of contaminant liquid, such as water, from a housing of the filter assembly, such as a fuel filter assembly.
[0014]The valve knob portion is adapted to facilitate manual operation of the drain valve and to assist in draining water from the filter housing. The valve knob portion includes a substantially annular groove facing the valve stem portion and defining a drain reservoir, and a drain spout forming a drain passageway through which the water drains. The liquid drains from the filter housing through the internal passageway and the drain holes, then into the drain reservoir in the valve knob portion, and exits the valve through the drain spout.
[0016]Therefore, the one-piece self-venting drain valve in accordance with the present invention provides a simple self-venting liquid drain valve permitting liquid such as water to drain while gas such as ambient air enters the vessel being drained to facilitate drainage, even when the filter housing is subjected to a vacuum. The self-venting drain valve of the present invention is relatively simple and inexpensive to manufacture because of the simplicity of its design that is a significant improvement over prior art valves.
Problems solved by technology
A problem that occurs with fluid filter assemblies, particularly useful for diesel engines and gasoline marine engines, is facilitating the removal of contaminants from the filter assembly.
These contaminants include water and particulate matter that tend to settle at the bottom of housings used to retain filter elements.
If a simple drain cock is utilized for the valve, the drainage may not be complete or may not occur at all because a partial vacuum is created in the filter housing upon initiating drainage.
In prior art arrangements there is the possibility of vent holes becoming blocked by particulate debris suspended in the fuel or water at the bottom of the housing.
Furthermore, currently used drain valves are made of multiple parts that makes them expensive in manufacturing and laborious and difficult to assemble.
Method used
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Embodiment Construction
[0025]The preferred embodiment of the present invention will now be described with the reference to accompanying drawings.
[0026]Referring now mainly to FIGS. 1, 2 and 3, a filter assembly 10, to which the present invention can be applied, includes a housing 12 in which is disposed a filter element 14 that is biased by a coil spring 18 to seat against an end cap 20. In operation illustrated in FIG. 2, fuel to be filtered, represented by arrows 21, enters the housing 12 through a plurality of inlets 22 flows outside of the filter element 14 and through the filter element 14 into a hollow core 24. The fuel 21 then flows out of end plate 20 through threaded outlet 26 and is delivered to an engine such as a diesel or other internal combustion engine.
[0027]The filter element 14 separates water 27 from the fuel 21 as the fuel passes through the filter and the water pools in a space 28 at the bottom of the housing 12. Solid particulate contaminants 30, which have been filtered out by the fi...
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Abstract
A self-venting drain valve is rotatably and slidably mounted to a filter assembly through an internally threaded base. The drain valve comprises a homogenously formed one-piece unitary valve body including a tubular valve stem portion and a valve knob portion. The valve stem portion includes a wall member defining an internal passageway provided with axially extending air vent openings through which ambient air can enter a filter housing through the internal passageway, and drain holes through which water is drained from the filter housing and the internal passageway. The air vent openings are formed through an upper portion of the wall member and are open to a top edge thereof, while the drain holes are formed through the lower portion of the wall member. The liquid drains from the filter housing through the internal passageway and the drain holes, then exits into the valve knob portion.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to self-venting valves, and more particularly to a self-venting valve for draining water from fuel filter assemblies.[0003]2. Description of the Prior Art[0004]Self-venting liquid drain valves have been known in the art for many years. Specifically, various assemblies have been made to provide fluid drainage from a vessel while providing a separate inlet for gas, such as air, to replace the fluid being drained. For example, in fuel / water separators used in diesel engines, water must be periodically drained using a valve assembly adapted to feed air into a separator while the water is being drained. The prior art devices have accomplished this by providing separate air and liquid passages formed through a portion of the valve assembly member.[0005]A problem that occurs with fluid filter assemblies, particularly useful for diesel engines and gasoline marine engines, is facilitating the remova...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16K24/00B01D35/00B01D27/08B01D36/00
CPCB01D27/08B01D36/006B01D2201/4084Y10T137/86332
InventorSTAMEY, JR., WILLIE L.ROLL, MARK A.
OwnerWIX FILTRATION