Abstract: The invention is directed to a liquid level control system which can be installed within an automatic pool reservoir surface skimmer or separately within or external of the reservoir which includes a primary float valve which allows liquid to flow into a pool reservoir when the level of fluid in the reservoir falls below a first predetermined level and a secondary float valve associated with the primary flow valve which shuts off the flow of liquid into the pool reservoir when the level of the liquid exceeds a second predetermined level which is higher in elevation than the first predetermined level. The primary float valve continually operates between open and closed states. The secondary valve is normally in an open state and when caused to change to a closed state remains in a closed state until manually reset. A flow valve is included which terminates flow from the source of the liquid under pressure to the reservoir through the liquid level control system when a normally expected flow rate is exceeded.

Abstract: The invention is directed to a liquid level control system which includes a primary float valve which allows liquid to flow into a pool reservoir when the level of fluid in the reservoir is below a first predetermined level and a secondary float valve associated with the primary flow valve which shuts off the flow of fluid into the pool reservoir when the level of liquid in the pool reservoir exceeds a second predetermined level which is higher in elevation than the first predetermined level. The primary valve continually operates between open and closed states. The secondary valve is normally in an open state and when it is caused to go to a closed state it remains closed until it is manually reset.