Why Do We Prefer PVC Pipes Instead Of Iron Pipes?

In recent times, PVC has become a very viable option for use in both residential and commercial construction. Cost and ease of use are often the justification for this selection. However, it’s important to discuss the pros and cons of each drainage piping material with the building owner before making a selection.

Why Do We Prefer PVC Pipes Instead Of Iron Pipes?
 Why Do We Prefer PVC Pipes Instead Of Iron Pipes?

Cast iron often lasts significantly longer than PVC piping when utilized in drainage systems. Cast iron piping can last several decades, if not for a century. One downside of cast iron is that it is susceptible to rusting if not maintained properly.

The lifespan of PVC is harder to predict, as its use in drainage systems doesn’t have as long a history as does PVC. PVC has a lower temperature limit and higher expansion rate. It is important to consider the system that PVC will be utilized in, as it is susceptible to damage at high temperatures and highly acidic wastes.

Bracing and hanger support also has to be taken into consideration for PVC, as it can expand with higher levels of temperature swing. PVC is not fireproof. It’s essential to ensure it is properly fire-sealed at penetrations, as they will need to be handled differently than a cast iron penetration.
Why Do We Prefer PVC Pipes Instead Of Iron Pipes?
 Why Do We Prefer PVC Pipes Instead Of Iron Pipes?

Also, the use of PVC in return air plenums is not permitted. The cost for the installation of PVC piping is significantly less than that of cast iron in construction. PVC is easy to work with; however, it does require more hangers and supports as compared to cast iron.

Contractors generally prefer to work with PVC in my experience. It’s important to take note of what type of material was bid on by the contractor. If both PVC and cast iron are offered as appropriate drainage piping material,

Advantage Of PVC Pipes

Cost-effective  - PVC pipes and fittings are cheaper than the iron ones which makes the former more preferable.

Easy to fit  -  This is from the plumbers’ point of view. PVC pipes are easy to fit. One just needs to use a solvent (a sort of adhesive to join two pipes) and thread tapes to join them. But in the case of iron pipes, it becomes a mess!
Why Do We Prefer PVC Pipes Instead Of Iron Pipes?
 Why Do We Prefer PVC Pipes Instead Of Iron Pipes?

Anti-Corrosive in nature  - After a point in time, when iron comes in contact with water and air, it starts rusting. Corrosion is one of the main reasons for replacing iron pipes with plastic ones.

When the iron pipes start rusting, the water running through them is no longer healthy. The water loses its goodness. And there is only one solution to this which is changing the pipes which aren't pocket friendly. Thus, PVC Pipes.

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