Anti-oscillation valve
AssigneeJay R. Smith Manufacturing Company
InventorWilliam A. Stanaland
Life of this patent
Estimating the term…
Abstract
An anti-oscillation valve for and in a trap primer to restrict the flow of water from the supply line to an upper chamber of the trap primer and to facilitate the flow of water from the upper chamber to the supply line. The anti-oscillation valve having a body with a water supply bore provided therethrough. The bore includes portions defining an inlet and an outlet. First and second bore shoulders are formed in the bore. A filter screen is retained in engagement with the first bore shoulder. An anti-oscillation valve disc freely rests on the second bore shoulder and is retained between the first bore shoulder and the second bore shoulder. The anti-oscillation valve disc includes a valve disc orifice defined through and communicating the inlet with the outlet.
Claims12
A trap primer for maintaining water levels in a drain trap in a building having a building water supply line, the trap primer comprising:
- a supply line connection configured for coupling to the building water supply line;
- an anti-oscillation valve comprising:
- a body having a water supply bore provided therethrough, the bore including portions defining an inlet and an outlet, the inlet being coupled to the supply line connection;
- a first bore shoulder formed in the bore;
- a filter screen retained engaged on the first bore shoulder;
- a second bore shoulder formed in the bore;
- an anti-oscillation valve disc freely resting on the second bore shoulder, the anti-oscillation valve disc having a valve disc orifice defined therethrough and communicating the inlet with the outlet;
- and
- the anti-oscillation valve disc being retained between the first bore shoulder and the second bore shoulder;
- and
- a chamber coupled to the outlet of the anti-oscillation valve;
- a valve located in the chamber, the valve being moveable between a first position preventing water flow to the drain trap and a second position permitting water to flow to the drain trap.
A trap primer for maintaining water levels in a drain trap in a building having a building water supply line, the trap primer comprising:
- a supply line connection configured for coupling to the building water supply line,
- an anti-oscillation valve including a body having a water supply bore provided therethrough, the bore including portions defining an inlet and an outlet, the inlet being coupled to the supply line connection, a first bore shoulder formed in the bore, a filter screen engaged on the first bore shoulder, a second bore shoulder formed in the bore, an anti-oscillation valve disc freely resting on the second bore shoulder and being retained between the second bore shoulder and first bore shoulder, the anti-oscillation valve disc having a valve disc orifice defined therethrough and communicating the inlet with the outlet;
- an upper chamber coupled to the outlet of the anti-oscillation valve;
- a lower chamber having a bottom and a circumferential upper edge;
- a flexible diaphragm separating the upper chamber from the lower chamber;
- and
- a valve stem extending within the lower chamber and including an inlet orifice coupled by a bore to port;
- and
- the diaphragm being moveable as a result of pressure differences in the upper and lower chambers between a position where the inlet orifice is closed off and a position where the inlet orifice is open allowing water to flow to the drain trap.
Dependencies are inferred from the claim text.