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Hydro testing and flow

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Untitled design 9 3 | BLContral | November, 2022

Water is a precious resource that we often take for granted. Most of us have never even seen the water that comes out of our taps because it has been filtered and treated in a way to make sure it’s safe to drink. In fact, most people spend more time worrying about their coffee maker than they do about the water coming from their faucet. 

That being said, there are many different aspects to managing your home’s water supply- from how you use it in everyday life to how you maintain your plumbing fixtures and pipes. One important aspect of maintaining your home’s plumbing system is hydro testing and flow calibration. 

Hydro testing involves pumping clean water into a system with all valves closed, then checking for leaks by opening one valve at a time. This allows technicians to check for leaks and notify you of any developing issues before they grow into larger problems. Flow calibration, on the other hand, is used to ensure that your water system is running smoothly by measuring the amount of water flowing through your plumbing system. With regular hydro testing and flow calibration, you can prevent many future problems in your home’s plumbing system.

When it comes to GPM (gallons per minute), flow rates are typically given as a range, such as 5-7 GPM or 10-12 GPM. These numbers mean that at minimum, 5 gallons should pass through every minute with 7 being the absolute maximum number of gallons passing through each minute. If a water meter shows an output of, say, 6 GPM it means that on average 6 gallons are passing through each minute. Flow rates are important to know in case of emergencies where pressure needs to be turned up higher than normal due to fire hazards or other concerns.

Hydro testing and flow is the only way of knowing if you have a leak somewhere along with your system without actually seeing it with your own eyes. Having a technician come out and check for leaks is also an effective way of preventing any problems from occurring within your home’s plumbing system, but it can get expensive quickly depending on the severity of the problem. 

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Hydro testing allows technicians to determine just how big or small of a leak may exist while not having to disassemble sections of plumbing fixtures just yet if more analysis is needed. Hydro testing also ensures that the water pressure is correct and that no one has tampered with any valves, which can lead to even bigger problems down the road if gone unchecked.

The first step of hydro testing and flow involves pumping clean water into a system with all valves closed, then checking for leaks by opening one valve at a time. When you are checking for leaks in your home’s plumbing system it is important to make sure that all fixtures are turned off including dishwashers, showers/tubs, washing machines, outside faucets, icemakers, or anything else connected to your water supply. Checking each individual fixture will ensure there are no running appliances that could skew the results of tests by adding additional pressure on the system. Once all valves are shut off, the technician will open each one to check for leaks. If you suspect that your water pressure is lower than normal, this test can also be conducted by only opening valves in areas where you notice problems.

Normally when technicians run tests like these they do not go digging up sidewalks or driveways to access plumbing fixtures without having received permission from clients first, however, if there is a larger problem it will need to be addressed anyway. The last thing that any homeowner wants is an issue with their plumbing system which causes them to have extremely high bills because clean water was constantly leaking out of their pipes. 


When technicians calibrate flow meters such as turbine, PD, or other types found throughout residential and commercial plumbing systems they know just what was previously set so they can find the right balance between “noise” and accuracy. Sometimes they will need to remove flow meters in order to clean them out along with venting the line so it is free of debris, but this depends on the type of equipment that needs calibration. 

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