Have you ever noticed an unusual taste of your drinking water at home? This might be because of some contaminants. The reserved flow of polluted water into our drinking system due to fluctuating water pressure could also be the reason.
Reasons for Backflow Contamination
Backflow typically occurs because of back siphonage or back pressure. Back siphonage occurs when there is a sudden and major fall in pressure within the main lines carrying potable water for civic supply. Back pressure occurs when there is a sudden fall in pressure within the lines carrying potable water within a premises and contaminated water from the adjacent sewer pipes flows in.
This is where the backflow testing procedure comes into the picture. There are backflow test kits being used to do this procedure. Below are some of them:
Certification for the test kits
The test kits which are used to test backflow have to be certified in accordance with the standard rules and regulations. They also have to be calibrated as per the present calibration requirement annually and have to undergo an auditing test which is conducted by the office of technical regulator. Also, care has to be taken to see that the kits used for backflow testing Gold Coast have been accurate and precise in their readings.
Pressure vacuum breaker
Using a mechanical backflow testing device such as pressure vacuum breaker has its own advantages. It has an independent check valve which is spring loaded and also consists of a spring loaded air inlet valve, on the side of the check valve. This device also makes use of the test cocks to shut off the water flow when required and these cocks are attached to gauges which are calibrated to its proper functioning. But you should be careful to prevent this device from freezing especially when it is installed in the outdoors.
Hence there are a lot of things to keep in mind while using backflow prevention testers. Also these preventers have to be monitored periodically as their internal parts such as springs, moving parts or seals are prone to wear and tear with continuous use and might cause problems if left unattended.