When Should You Use Schedule 80 PVC Pipes

Posted by Robert Wilson on October 23rd, 2019

Schedule 80 PVC pipes can be used in high-pressure water applications, underground applications, for insulation purposes, and to help projects meet building code requirements.

PVC is ideal for home plumbing piping needs since it does not corrode or rust over time. As a result, PVC pipes do not need to be replaced unless they start leaking or are damaged. Furthermore, they are easy to install because they do not need metalwork or welding. PVC pipes are also inexpensive to purchase and they are durable, just like CPVC Piping. Based on your needs, you can opt for a schedule 80 or 40 PVC pipe.  Read on to know the uses of schedule 80 pipes.

High-pressure water

Schedule 80 pipes are ideal for higher pressure water flow and industrial applications. This pipe is rated for about 200 psi at 140 degrees F temperature. This is higher than the 65 psi that is found in the standard water piping systems. In addition, it is above the schedule 40 PVC pipe rating standard of 140 psi. With this specialized ability, this pipe is ideal for use in situations or applications where the water is under moderate or high pressure.

With regard to pressure capacities, the Schedule 80 Pipe falls in the middle of the scale for PVC pipes. However, it is important to recognize that the schedule 80 piping systems have some limitations that must be considered. The pressure capabilities of this pipe should never be exceeded in any application. This is because in case it bursts, PVC pipes may shatter and the resulting projectiles can cause serious injury to anyone who is close by. 

Underground applications

Schedule 80 pipes offer greater strength owing to their thicker pipe walls. When pipes are buried underground, they can become slightly flatted or compressed because of the weight of the backfill. As a result, the probability of the pipe leaking increases, especially at the fittings. Schedule 80 PVC Pipe is preferred for underground applications because it is stronger and will likely maintain its proper shape.

Insulating properties

Because of their heavier wall, the schedule 80 pipes provide additional insulation that can help to maintain the water temperature within the pipe. Since the pipe is well insulated, it helps to prevent energy loss in hot and cold applications. PVC pipes are restricted to water that is not more than 140 degrees Fahrenheit. Although the thicker walls of schedule 80 pipes offer adequate insulation, if you are looking for a more effective solution, then external fiberglass pipe insulation is the best bet.

Meets code requirements

In some areas, building codes necessitate the use of Schedule 80 PVC pipe even in instances that do not require this pipe schedule. In such cases, this pipe schedule should be used to meet the set building codes and avoid having problems with the law and local authorities.

Before you begin any plumbing project, it is best to research extensively and pick the right PVC pipe schedule. This will ensure that the pipe schedule you pick delivers the results that you want and lasts for many years.