Working with Pipe

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When it comes to plastic piping, Is ½-inch CPVC and ½-inch PVC the same size?

No. CPVC is measured by O.D., which makes its sizing similar to hard copper. PVC is measured by I.D., which makes its sizing similar to iron...

 

What can I use to join plastic (CPVC) to copper?

The easiest thing is to use a push...

 

I need to retrofit some plumbing lines. What are the advantages of choosing plastic (CPVC) pipe over copper?

First, it’s traditionally about half the price of copper. Second, it’s not affected by the pH conditions of water or soil. Copper can fail if...

 

How close to the copper fitting do you need to hold the flame to get bring it up to soldering temperature?

The inner blue cone within the flame is the hottest part of the flame and should always touch the copper. When the copper starts to turn iridescent...

 

I’ve heard I need to open a shut-off valve (either a ball or a gate valve) before soldering it to a copper pipe. Why?

By opening the valve it prevents the washer inside the valve from getting damaged by excessive heat when...

 

If I’m soldering a copper pipe fitting onto an existing water line, do I have to remove all the water from the pipe first?

Yes. You must first remove all existing water in the line before soldering. Water cools the pipe, which doesn’t allow it to heat up to the proper...

 

When sweating copper, should I use propane gas in the blue cylinder or and propylene gas in the yellow cylinder?

Either one will work. The difference is that propylene in the yellow cylinder burns hotter. It has a flame temperature of 3,600 degrees F opposed to...

 

How do you measure black pipe?

Using I.D. (inside...

 

How do you measure galvanized pipe?

You measure it by the I.D. (inside...

 

Is ½” CPVC and ½” PVC the same size?

No. CPVC is measured by O.D., which makes its sizing similar to hard copper. PVC is measured by I.D., which makes its sizing similar to iron...

 
 
 


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