![]() ![]() Cross-linked polyethylene, commonly abbreviated PEX or XLPE, is a form of polyethylene with cross-links. It is formed into tubing, and is used predominantly in. Installing PEX Tubing in Concrete Slabs The following topics are covered: Types of concrete slabs with radiant floor heating; Common pitfalls in installing slab. Tools: Drill and drill bits Hand saw Tape Measure Combination square Pipe cutter Mallet Wrench File Steel wool Pliers Safety glasses Heat resistant gloves (not pictured). Installing A Basement Laundry Sink. Follow this with two short stubs of pipe and two 4. From the remaining opening in the box lid, use a similar arrangement to bring the vent pipe up from the box and back to the wall (Photo 1. Note the lid gasket for the vent opening is sized to the hub of the fitting. Finish up the sink- to- sump assembly by trimming the sink's tailpiece to length and joining it to the sump box with a 1 1/2- in. Photo 1. 4). Existing pipe connections. The trickiest part of running the remainder of the piping is identifying an existing vent that you can tap. Vents can take many forms, but to the uninitiated, they generally have the look of pipes that don't do anything. In the case of a basement bath or any other secondary stack in the basement, the vent is the piping that extends upward from the drain tee of the fixture. Where no basement drains are present, a vent for upstairs fixtures will often take off just below the toilet tee on a full- sized stack and disappear into an upstairs wall. Expect these vents to be 1 1/2 to 2 in. In our case, we tapped the vent serving a first- floor bath that was located next to the primary stack. While the location for each vent may be different, the connections won't vary much. As far as making the cuts is concerned, a hacksaw will cut plastic, copper and galvanized iron. And when it comes to connections, all can be made to code with banded couplings. With the sump's drain and vent risers brought up to ceiling height, run both to the existing piping you want to tap for the final connections. Keep in mind that once the risers go horizontal, across the basement ceiling, you'll need to establish conventional flow rates. Shoot for something between 1/8 in. Advertisement - Continue Reading Below. To make the vent stack connection, begin by cutting out a section of the stack large enough to accept a tee fitting. Because a vent's flow is always upward, install the tee upside down. With the tap made, simply glue the vent pipe from the sump into the branch of the tee (Photo 1. To tap into a plastic drain stack, glue short stubs of pipe into a 3- in. Mark the section to be removed (Photo 1. Then, splice the wye into the stack with 3- in. Tighten the couplings in place with a nut driver (Photo 1. Photo 1. 8). Cutting into waterlines is a good deal less complicated because there are fewer code considerations and hot and cold waterlines are easy to identify. Begin the installation by shutting off the water and draining the system by opening all upper and lower fixture faucets. Then, cut into the existing hot and cold waterlines with a tubing cutter. Splice in copper sweat tees and join the new lines to the tees with 9. Be sure to use non- acid flux and leadfree solder on all joints (Photo 1. more.
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