BCNA was incorporated in 1982 in the State of Colorado for scientific and educational purposes. BCNA is a non-profit, tax-exempt, corporation under section 501(c) (3) of the Internal Revenue Service Code. Click this link for a brief history of BCNA, listing initial and continuing projects and a number of publications.
The spring is typically located around a central shaft that is attached to the closing disk. The entire assembly is securely enclosed in a machined brass housing that contains the workings of the check valve. The check valve is generally located above the submersible pump unit by a few inches. This ensures that the long column of water remains in the well pipe. This increases the efficiency of the pump by not having to refill the length of the pipe every time the system calls for water.
This video shows the location and how to shut down the water supply to the lawn sprinkler system.The valve is located on the north side of the house and is turned clockwise completely to shut off the water. This valve should either be in the fully on or fully off position, not partially open.Also shows the location of the solenoid valves in the valve box.his video shows the location and how to shut down the water supply to the lawn sprinkler system.