Low Cost Diy Refrigerant Valve Cap.




Introduction: Low Cost Diy Refrigerant Valve Cap.

Here is a low cost and robust way to make an air tight cap for any refrigerant valve. I didn't have a blanking cap so of course I made my own. All you need is a appropriate sized flare nut.

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: The Tools.

A propane torch and electronics solder. A high wattage soldering iron can also work.

Step 2: Making the Seal.

I used a non stick base to rest the nut. My aluminum step ladder was perfect for this. A ceramic tile or stainless steel plate will also work. I couldn't show myself applying heat and feeding solder into the base of the nut.

Once the solder melts and bonds onto the base of the nut, just let it cool. Now it is ready for installation.

Step 3: Installing.

I used a Ratchet to drive in the nut. I used a spanner, not pictured, to hold the body of the valve.

Now the valve is capped and hermetically sealed if ever the valve is accidentally opened.

Be the First to Share


    • Magnets Challenge

      Magnets Challenge
    • Snow Challenge

      Snow Challenge
    • Wearables Contest

      Wearables Contest

    2 Discussions


    3 years ago

    Wouldn't a thread sealer like Loctite 513, 545, 565, 577, or 5671 accomplish the same thing?


    Reply 3 years ago

    You need to learn to read followed by proper education.