How to Solvent-Weld PVC Waste Water Pipe
If it is properly constructed and well maintained, a waste water pipe can last up to 80 years. One of the most important things in constructing a durable waste water pipe is the construction of strong joints. To produce a durable and long lasting waste water pipe, you will need to be able to properly properly solvent-weld the joints in the pipe. This handy step by step guide will show you everything you need to know to do the job properly.
Step 1 - Lay out the PVC Pipe
Choose a flat location where you can lay out the lengths of PVC pipe that will be welded together with solvent cement. This will make the application of primer and solvent cement much easier.
Step 2 - Apply the PVC Primer to Pipe Ends
You need to open the can of PVC Primer by breaking the seal. After you have broken the seal, pull out the applicator dobber which is attached to the lid. Then, tap the dobber against the sides of the can to shake off excess primer. Use the dobber to apply PVC primer on the outside surface area of the two pieces of pipe that are to be joined. Also, apply primer to the inside pipe area of any couplers or "T" connector joints that will be used in your waste water pipe.
Step 3 - Cement the Fittings and Attach the Joint to Pipes
The process of opening the PVC solvent cement is the same as was used to open the primer. Remember to shake off excess solvent cement by tapping the dobber on the sides of the can. Then, take the coupler or "T" connector and apply solvent cement to the insides of the connector or joint. Don't apply too much solvent cement, just enough to create a durable bond between the coupler and the pipe to be inserted in the joint.
After you have applied solvent cement to the couplers or "T" connector joints , apply the solvent cement to the outside edges of the PVC pipe lengths to be joined or inserted in the "T" connector.
Step 3 - Putting the Pipes Together
Once you have applied the solvent cement to the couplers and PVC pipe lengths to be used, you can assemble the joint connections. Begin by pressing the coupler on to the end of the first length of pipe to be joined. When inserting the pipe into the coupler, use a twisting motion to make sure that the coupler or "T" joint goes all the way down onto the end of the pipe length. This serves two purposes: to make sure that the coupling is secure and to remove any air bubbles in the solvent cement. Repeat the process for the other side of the coupler or "T" joint. Then, connect other lengths of pipes or additional couplers or joints in the same manner. Once you have welded all of the joints with the solvent cement, you can place the pipe in the ditch and cover it with dirt.