Install Swing Check Valve and Unions (with Correction)

What happens here

With primer and cement applied, the PVC pipe sections are joined. When connecting, it is crucial to push the pipe firmly into the fitting and give it a slight twist to spread the cement evenly, then hold it in place for a few moments to allow it to set. The brass swing check valve, along with its attached unions, is then connected into the main pipe. The hosts humorously realize they initially installed the swing check valve upside down. This is quickly identified by observing the arrow indicating water flow direction on the valve. They demonstrate how easily the unions allow for disassembly to correct such an error. The valve is then reinstalled in the correct orientation, with the arrow pointing upwards towards the water tank. The unions are tightened to ensure a secure, leak-free system.

Goal: The swing check valve and unions are installed into the cut PVC pipe section. An initial error of installing the valve upside down is identified and corrected, demonstrating careful attention to detail for proper water flow.