PEX Tubing. 

Step by step instructions working with PEX tubing for your plumbing needs ... 

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    PEX tubing installation.

 

Cross-linked polyethylene (PEX) is developing quickly in acceptance as a supply pipe for residential plumbing. It is not hard to understand why. Developed from the 1960s but relatively new for the United States, this supply pipe combines the ease of use of flexible tubing with the durability of rigid pipe. It can endure a large temperature range ( from subfreezing to 180 degrees F ) it's inexpensive also it's quieter than rigid supply pipe. PEX is flexible plastic(polyethylene) tubing that's reinforced by a chemical reaction that makes long fibers to improve the strength of this material. It's normally utilised in manufactured housing along with recreational vehicles, radiant heating systems, also residential housing. PEX can easily be bent to follow corners and make other changes in direction. For normal residential installations, PEX can be joined with quite simple fittings and tools. Unions are generally created using a crimping tool and a crimping ring. You merely insert the ends of the pipe you're jointing into the ring, then clamp down over the ring while using crimping tool. PEX pipe, tools, and fittings is usually purchased from most wholesale plumbing suppliers and at numerous home centers. Coils of PEX are sold in a number of diameters from ¼-inch to 1 inch. PEX tubing and fittings from different manufactures are not exchangeable.

 

 

 

 

    PEX crimping tool and materials

 

  

 

                                            

Specialty tools for installing PEX are available wherever PEX is sold.

The basic set includes a

(1.) full circle crimping tool

(2) a tubing cutter.

 

 

 

 

PEX can be connected to other water supply materials.

 

Transition fittings, including CPVC-to-PEX

 (1), copper to PEX

 (2), and iron to PEX

 

 

1. Color coding is usually a practice many PEX manufactures have embraced in making identification easier. Since the material is the same apart from the color, You can buy only one color (red is more common) and utilize it for both hot and cold supply lines.

 

 

2. It also is available in coils of common supply pipe diameters ¼-inch, ½-inch, ¾-inch, and 1 inch.

 

 

     PEX tubing installation

 

Check with a local plumbing inspector to confirm that PEX has been authorized by all major plumbing codes. Follow the rules below while installing PEX.

 

 

 

 

1. Do not install PEX in above ground exterior applications because it degrades rapidly from UV exposure.

2.  Do not use PEX for gas line.

3. Don't use plastic solvents or petroleum based products with PEX, they can soften the plastic. Keep PEX a minimum of 12 inches from recessed light fixtures and other potential sources of high heat.

4. Do not attach PEX directly to a water heater. Make connections at the heater with metallic tubing, either flexible water heater connector tubing or rigid copper at least 18 inches long, after that join it to PEX with a transition fitting.

5. Don't install PEX in area anywhere there is a possibility of mechanical damage or puncture. Always attach nail plates to wall studs that house PEX.

                                                                                                     

  

 

    Installing PEX tubing

   PEX installation Advantages

 1.Easy to install. PEX does not require coupling joints for long runs or elbows and sweeps for turns. The connections do not require solvents or soldering.

 2. Good insulation. The PEX material has better thermal properties than copper for lessened heat loss.

 3. Freeze resistance. PEX retains some flexibility in sub-freezing conditions and less likely to be damaged than rigid pipe, but it is not frost proof.

4.Good for retrofit jobs. PEX is easier to snake through walls than rigid supply tubing.

 

   How to make PEX connections.

 

 1. Cut the pipe to length than slip a crimp ring over the end.

 

   



      
                                  

 

2.Insert the barbed end of the fitting into the pipe until it is snug against the cut edges. Position the crimp ring so it is ¼-inch from the end of the pipe, covering the barbed end of the fitting.

 

 

3  Align the jaws of a full circle crimping tool over the crimp ring and squeeze the handles to apply strong  even pressure to the ring.

 

 

4.Test the connection to make sure it is acceptable, using a go/no-go gauge. If the ring does not fit  into the gauge properly, cut the pipe near the fitting and try again.

 

 

 

 

 

 

 

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