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.
  the pcv valve is located on the valve cover on the rear bank (closest to the firewall) on the throttle body side. if you look just behind the intake manifold you'll se â¦ e a black plastic tube sticking up out of the valve cover. that is you PCV valve.ind the PCV valve and first step remove the black hose that runs from the valve to the manifold. On the side of the manifold t here is a vacum hose adjacent to the PCV hose that can be removed for better access.