How to Connect Copper Tubing to an Indoor Waterfall Wall for an Evaporative Cooler

How to Connect Copper Tubing to an Indoor Waterfall Wall for an Evaporative Cooler

DIY plumbing can easily connect copper tubing from an evaporative cooler to an indoor waterfall wall with a self-piercing valve. Also used to send water to ice-making machines from refrigerators, clamp poppet valves around a copper water supply pipe and pierce the wall of the pipe to supply the “tap” pipe. Copper tubing from evaporative coolers connects directly to the outlet of a saddle valve through a compression fitting. Taking advantage of the current water supply with a saddle valve relieves the DIY plumber of the pipe from cutting, welding, or gluing.


  • Twist the saddle-type valve bolts counterclockwise by hand or with a screwdriver or wrench to loosen and remove the bolts from the upper and lower saddle-type valve plates. Next, remove the bolts from the bolt holes and separate the upper and lower valve plates. Next, locate the water supply line closest to the evaporative cooler.
  • Lower plate mount valve retention against the bottom of the supply line. At the bottom of the valve top plate, attach the saddle-type valve rubber gasket. Rotate the left saddle-type valve handle to retract the valve needle into the valve body. Hold the top plate against the top of the supply line and align the top plate with the bottom plate.
  • Thread the screws through the top plate and the bottom plate. Tighten the screws until tight. Use a screwdriver or wrenches to fully tighten the screws and fully tighten the saddle valve in the supply line.
  • Twist saddle-type valve handle clockwise to extend valve needle through the pipe wall. Twist until the wall of the tube is felt and the needle enters the tube. Turn the valve compression nut counterclockwise to remove the nut and ferrule from the valve outlet. Slide the nut onto the copper tube with the nut thread toward the open end of the tube. Slide the ferrule onto the copper tube.


  • Final push of the tubing into the saddle-type valve outlet until the end of the tubing boots against the inside of the valve outlet. Slide nut and ferrule against valve outlet. Turn the nut clockwise to make the outlet nut threads. Finish tightening the nut with a wrench.
  • Unscrew the compression nut and an evaporative cooler float bushing from the inlet valve. Slide the cooler nut onto the loose end of the copper tubing with the nut’s thread facing the open end of the tubing. Slide the ferrule onto the tube. Insert the tube into the inlet until it reaches the inner tube of the inlet. Slide the nut and ferrule against the inlet, turn clockwise to secure the nut to the inlet, and finish tightening with a wrench.
  • Rotate saddle-type valve handle counterclockwise to retract needle valve and allow water to flow into the tubing. Check compression nut connections for leaks. To turn off the water, turn the valve handle.

How to clean interior wall waterfalls

Interior Wall Waterfalls bring a bit of nature in what a boon for apartment dwellers to enjoy the soft sound of water. Whether renting or buying, many people find the soothing sound of flowing water and the appearance of decorative indoor waterfall wall or a waterfall elevator aesthetically pleasing. However, interior wall waterfalls are susceptible to the build-up of algae and mineral deposits and should be cleaned regularly.



  • Disconnect the pump.
  • Remove any rocks or pebbles and place them in a bowl of warm water to soak.
  • Disconnect and disassemble the pump from the fountain according to the instructions that come with your fountain.
  • Clean mineral deposits and other debris from small holes inside and outside the pump using an old toothbrush. Place the fountain pump and tubes in the sink and quickly allow running water to flow through to wash off the dirt.
  • Empty all the water from the fountain container.
  • Dampen a damp sponge or nylon sponge with a calcium and lime remover product and rub off mineral deposits within the fountain.
  • Mix 1/4 cup of bleach or vinegar with 1 cup of water. Rinse the bowl of the fountain with the mixture to kill and clean away algae.
  • Rinse the bowl and stones or pebbles well with clean water and reassemble.


Tips and Warnings:

Direct sunlight encourages algae growth

Consider moving your interior wall waterfalls away from sunny windows.

Replace fountain water with distilled water to remove mineral deposits.

Consult your dealer or fountain manufacturer for information on commercial fountain cleaning products.

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