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      Plumbing Questions and Answers


      Plumber questions, and answers. Find out what people are asking. 

      Here are some of the common plumbing questions and answers. While we cover the most searched plumbing questions, you may have some specific queries. Please feel free to reach out and we will answer any plumbing questions you have.

      Why plumbing needs to be vented?

      The venting on a plumbing waste system serves three primary functions. The most important function is to balance the air pressure in the waste line to allow it to drain properly. 

      As water flows through a drain, positive pressure builds up in front of the water.  This could ultimately slow and stop the flow of the drain. 

      Venting the drain system allows the pressure to balance behind the water flow, so it does not slow down and drains as it should. 

      This effect also prevents the build-up of negative pressure behind the water, which would push water out of the p-traps in a system. 

      P-traps are U-like bends under almost all home plumbing fixtures that are designed to constantly hold water to prevent harmful sewer gas from entering the home. 

      The second function of waste venting is that it allows for the harmful gasses that build up in our sewer systems to be released outside of the home. 

      The third function is to allow oxygen to be introduced into the sewer system which promotes the growth of “good” forms of bacteria that eat human waste and allows drains to flow at their best.

      Which plumbing device prevents a backflow?

      Plumbing systems are composed of three different independent but equally important systems: water, drainage, and gas. 

      Backflow devices exist for both freshwater and drainage systems, and both are protective measures necessary to keep properties and people safe. 

      The most important and common type of backflow device is on the freshwater system. 

      Backflow devices only allow water to flow one way and they prevent contaminants from entering into the freshwater plumbing system. 

      They are most common at irrigation connections or for independent properties or facilities so that if contaminants enter a freshwater system, it will be isolated to that particular property or part of that system, without putting more people or properties at risk of contamination. 

      The less-known type backflow valve exists in sewer systems and is more accurately called “back-water valves”.

      These valves are installed for properties where the elevation of the city/county manholes are higher in elevation than the foundation level of an individual property. 

      In those cases, if the main sewer line were to back-up, waste would flood out the properties lower in elevation than the manholes. 

      The back-water valve is a flapper installed underground and is designed to close if water from the main sewer attempts to back-up into individual properties. 

      Unfortunately, many of these valves were buried underground with no top side access during construction.  When this happens and the backwater valve is broken and needs to be serviced, they need to be excavated and replaced with a proper set of cleanouts and a backwater valve that includes top-side access with a separate cleanout riser for the backwater valve.  

      Can plumbing and electrical be in the same wall?

      During the new home construction process, most decisions are made by the builder and their installation crews by doing what is easiest and cheapest. 

      That being the case, electrical, water, drainage vents, and even gas are often in the same wall and possibly located closely to one another depending on where the fixtures for each respective system are located. 

      Before drilling or cutting into the wall, care should be taken to avoid hitting an unseen line or connection from any of these systems. 

      Do you install water heaters?

      Al Coronado Plumbing is proud to service, repair, and install ANY type of water heater known to man! 

      We are the professionals educated in gas and electric tank-style units, tankless, solar, and hybrid heat pump units, to name only a few. 

      Al Coronado Plumbing has seen it all and can handle any water heating system that you may have!

      Why do plumbing pipes make noises?

      There can be many different reasons why plumbing pipes can make noises.  Some of the noises are perfectly normal and unavoidable, like hearing the water flow through the drain line in a laundry room wall. 

      Some are not to be expected and signal an issue with the operation of the system.  These noises are often types of what is called: “water hammer.”  Water hammer occurs when water is moving inside of a system in unexpected ways.  Water hammer can present with a periodic or continuous thumping, knocking, screeching, or higher-pitched tone, and can be due to many different types of problems with a system.  Often, water hammer is brought on by excessive pressure or malfunctioning valves in the system. 

      Homeowners and professionals are often too quick to identify the issue with a lack of strapping on the piping system but we must remember, even if the piping is not strapped properly, something wrong with the system has to be causing the pipe to move in the first place. 

      Calling a professional like Al Coronado Plumbing is important in these situations to avoid unnecessary or unsuccessful repairs and solutions.       

      Why is plumbing important?

      The plumbing system is composed of three separate and independent systems: water, drainage, and gas. 

      In today’s modern age, it often becomes easy to overlook the importance of these systems and the abilities they provide to us on a daily basis.  The water system delivers safe and drinkable water to any fixture in the home for our consumption and bathing. 

      The drainage system allows us to carry hazardous waste away from our homes in a sanitary way, avoiding public health concerns or issues with disease spread. 

      Gas allows for the heating of water, heating, and air, as well as medical gas delivery, which allows for medical procedures to be performed safely. 

      All of these systems contribute to the health, safety, and daily comfort of our lives and it is important to remember that your local plumber is responsible for it all!

      Are plumbing services taxable?

      In the state of Arizona, plumbing services are not taxable and therefore, customers will not be charged any taxes for services rendered.

      Can you do plumbing on mobile homes?

      Mobile home plumbing is not very different from traditional slab construction plumbing. 

      Al Coronado Plumbing is proud to offer plumbing service and repair on all types of structures and homes for both private residences as well as commercial operations. 

      We are your go-to plumber for any job.  There is no job too big or too small for Al Coronado Plumbing to handle!

      What plumbing work requires a permit?

      Uniform plumbing code requires permits to be pulled before a lot of different types of projects can be completed in a plumbing system.  Technically, permits should be pulled before a toilet or faucet installation. 

      However, most homeowners and professionals would agree that would be excessive and unnecessary. 

      That being said, it is important to find a balance between code requirements and logic to avoid unnecessary costs. 

      As a good rule of thumb, plumbing permits should be pulled for any water heater installation, gas installation, water line or sewer line replacement, or other plumbing work that will be covered underground or in walls, or of significant monetary value over $5,000. 

      This will keep such installations safe and ensure the homeowner is protected and that the work is done to current code standards. 

      Al Coronado Plumbing includes permits on all such projects to protect the homeowner and ensure a professional and quality job is done.

      Do you offer free estimates?

      As a courtesy to our customers, Al Coronado Plumbing provides estimates free of charge within our service area. 

      We often receive phone calls asking for pricing on various repairs, but it will always be necessary for a trained technician to evaluate the job in person before an accurate price can be given.  This is true even for “small” or “simple” repairs.  The reason for this is to provide an accurate price that will not change, and to avoid any surprises during an already inconvenient time of having a plumbing issue to begin with! 

      Many companies will provide “foot-in-the-door pricing” over the phone to gain an opportunity to complete the repair.  However, after the contractors arrive on-site, the “I didn’t knows” enter the picture, and the pricing changes. 

      We feel this is unfair to consumers.  This is why Al Coronado Plumbing offers free estimates to be the accurate professionals our customers count on us to be!

      If you have any more plumbing questions that we haven’t answered here, please feel free to contact us

      Have you ever wondered what some of the terminology used in some of the plumbing questions? Home Reference has a great glossary of the plumbing terminology used

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