Yes, PEX can be used with compression fittings. It is necessary to ensure the fitting meets the application criteria (e.g., pressure and temperature) to prevent leaks.
Slide your expansion ring over the PEX tubing until it overhangs the end of the tubing by no more than 1/8 inch or until the stop on the ring (if present) touches the tubing.
If you're using PEX A piping, Cold Expansion PEX (CEP) fittings are the most common type of fitting that you'll see being used and are exclusive to PEX A. The biggest benefit is that these fittings are the same inside diameter as the pipe and do not reduce flow to the same extent as crimp fittings.
The use of softer tubing (such as polyurethane or vinyl) is not normally recommended with compression style fittings because the tubing wall is likely to collapse, or move away from the ferrule.
PEX-b: This type is formed using silane, or moisture cure, method. It is the most common PEX pipe and is offered in more sizes than PEX-a. It is compatible with push-to-connect, EvoPEX and crimp fittings systems.
PEX b used to be limited to crimp fittings for installation, while PEX a offered a larger opening for expansion fittings. Through meticulous enhancements, PEX b expanded its way of connecting. PEX b pipes are now fully certified for use with both ASTM F1807/F2159 crimp and ASTM F1960 expansion fittings and accessories.
Crimp fittings can be used with PEX-A or PEX-B piping but must use a copper crimp ring or stainless cinch ring. Expansion fittings can only be used with PEX-A and require a cold expansion tool and sleeves.
With A-types, the levers are welded directly to the socket (or female) end of the fitting. On B-type fittings, the levers are welded onto a floating ring that slips over the ball (or male) end. It's really that simple!
One of the most common causes of leaks in compression fittings is improper tightening. If the fitting is not tightened enough, it can lead to insufficient compression of the ferrule, resulting in a weak seal and potential leaks.
Yes, PEX can be used with compression fittings. It is necessary to ensure the fitting meets the application criteria (e.g., pressure and temperature) to prevent leaks.
Both copper crimp rings and stainless pinch clamps are great for making connections onto ASTM-F1807 PEX fittings.
This is one of the commonly asked questions when dealing with PEX pipes. The general answer is YES: PEX B fittings can be used with PEX A pipes, especially in residential applications, which offer flexibility in installation options.
On the other hand, crimp fittings are installed using a copper crimp ring that goes on the outside of the Pipe (PEX-B or PEX-C). The connection is secured using a crimping tool that compresses the copper ring. For a more detailed understanding of how to install crimp fittings, see our blog here.
How soon after installation can you pressure test PEX tubing? PEX pipe can be pressurized for testing as soon as all necessary connections have been made.
Luckily, PEX tubing does not tend to leak. Most leaks occur at joints or are caused by improper installation. Repairing a leak with PEX tubing is easy and relatively inexpensive. The easiest way to repair a pex pipe is by replacing the fittings with brass PEX fittings with copper or stainless steel crimp rings.
Yes, compression fittings on copper are very reliable when installed correctly.
Yes, but only if the pipe and fittings are compatible. Compression fittings with a short tube stop depth should not be used with Speedfit pipes. Use a 'TSM' insert and follow the instructions of the compression fitting manufacturer when connecting to plastic pipework.
Can I reuse a compression fitting after removing it? It depends on the condition of the fitting. If the components are not damaged or excessively worn, they can be reused. However, if there is significant wear, corrosion, or deformation, it's best to replace the fitting to ensure a secure and leak-proof connection.
Compression fitting materials for copper pipe
The compatibility of brass with copper ensures a long-lasting connection, making it ideal for water and gas applications within moderate temperature and pressure ranges.
SharkBite couplings with a tan collar are designed to work with CTS pipes like PEX, copper, CPVC, PE-RT or (CTS SDR-9) SDR-9 HDPE tubing.
Due to the problem earlier caused by polybutylene (PEX predecessors) plastic PEX fitting have been recommended. It is true that in areas where water is less acidic, brass fitting is better. But in areas where water is acidic or easily contaminated, plastic fittings are better.
PEX B uses an insert-style fitting. After inserting the fitting into the pipe, you fasten it in place with a copper sleeve, using the crimp tool.
In areas with aggressive soil or water conditions, plastic or brass PEX fittings are recommended. And being a high-density polyethylene, PEX can also be buried in concrete. In fact, it's often used for radiant heating under concrete floors.