Tag: types of plumbing systems

What You Need to Know About the DWV System

In our previous blog, we have listed down the different types of plumbing system that can be found in your home. Now, we will dig a little bit deeper on Drain-Waste-Vent or DWV system.

According to Plumbfix, in modern plumbing, a drain-waste-vent (or DWV) is part of a system that removes sewage and greywater from a building, and regulates air pressure in the waste-system pipes to aid free flow. A DWV plumbing system is the collection of pipes that are responsible for disposing your home’s sewage and water wastes from your toilet bowls, bathtubs, showers, sinks and other appliances like dishwashers and washing machines.

Your DWV plumbing system is vital in order to prevent your sewage and waste water from spilling into your house, possibly harming your health.

The system is divided into two parts: the drain-waste pipes and the vent pipes.

The Drain-Waste Pipes

This part of the DWV system is responsible for taking the actual wastes from the various drains (e.g. bathroom, sink) and appliances inside your home and delivers them to the public sewer or the septic tank.

The Vent Pipes

One of the functions of the vent pipes is to ventilate the sewage gases out of the house through an exhaust pipe on the roof. The other function of the vent pipes is to provide air for the drain-waste pipes to perform its function. The air helps the sewage drain smoothly without the gurgling noise that can really be bothering.


In addition, the structure of DWV systems are commonly composed of the horizontal and vertical pipes. The vertical pipes are called stack that usually goes on from the roof to the basement. Connected to the stack are the multiple horizontal pipes located at each level or division of home.

The horizontal pipes catch the waste water from the drains of your sinks, toilets, and showers. These pipes then slope down from the drain to the stack in order to avoid clogs and stagnant water.

But, in case clogs on your drains or DWV pipes happen, you can count on us! GSR Malabanan’s expertise on siphoning and plumbing services will surely benefit you! Call us now!


Your home’s plumbing system is a complex network involving physics and of course, the different pipes for water supply, drain, and vent, among many others. As someone who is not familiar with these matters of the house, it really pays to do some research on how something works and where you can find it so that you’ll know, at the very least, what precautionary actions to do in case a problem arise.

On our previous blogs, we have already indicated the importance of plumbing systems, now, we will go over each of the different types of plumbing systems that are commonly found inside a regular house.


Water Supply System

Your water supply system is in charge of carrying out the water en route to your faucets, showers, toilets and/or bathtubs. It is also responsible for the ample stock of water for your appliances like water heater, dishwasher, and washing machine. This one is usually composed of a well-engineered system of water pipes, fittings, service valves, and faucets.


Drain-Waste-Vent System

Drain-waste-vent system is the most important plumbing system present in your home. Just like a human body, any waste must be thrown or released properly in order to have a smooth and systematic process. The DWV system is the one that carries out the waste water and sewage from your sinks, bathtubs, showers, and toilets to the septic tank or public sewers. Meanwhile, the vent system is connected to the drain waste-piping and its main job is to ventilate the sewage gases to prevent it from building up inside the house making that very awful smell. The pipes of the DWV system are usually hidden in the walls, beneath the floors or in the attic. The most frequent problem this system experiences is clogged drain, hence, a professional plumber is needed to fix this out when it happens.


Kitchen Plumbing System

This plumbing system is commonly found even on rural houses. This is basically composed of hot and cold water supply lines to faucets, a waste line for the sink, and for some kitchens who has a gas range, a gas supply pipe may also be included.


Bathroom Plumbing System

One of the most important plumbing systems in your house is the one that involves the bathroom. The bathroom plumbing system, just like the kitchen plumbing system, is also connected to the DWV and the water plumbing systems. Without the water supply and the drain-waste-vent function of the DWV system, your bathroom plumbing system may not function properly.


Now, if the worst case scenario happens and you need someone to fix your plumbing systems for you, make sure that you keep GSR Malabanan’s hotline number handy. Let us do the dirty work for you!

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