Backflow Prevention, what is it?

Ever see those big valves sticking out of the ground near the sidewalk and wonder what they are for? Have you heard of anti-siphon devices and wondered what they were talking about? Even though you may not know what they are they work relentlessly to protect the public health. These valves are installed on domestic water lines to prevent the back flowing of water into your fresh water supply.

Now, you may ask, when is it possible for water to flow backwards into the fresh waterline? Often, when there is a fire, firetrucks will pump the water from the domestic supply. If, during this time you are say, filling a swimming pool, the negative pressure will siphon the water from the pool and make its way back into the utilities water supply contaminating it. Same goes for when you are gardening and lay the hose on the ground and the water is drawn back into the water supply dirt and bacteria can contaminate the water supply.

Back flow devices and anti-siphoning devices prevent this from happening. With back flow devices if a negative flow occurs the valve "checks" or prevents the flow of water when the pressure coming into your supply is lower than the pressure already past the valve thus preventing an equalizing or back flow situation. This is usually accompanied by what is commonly called dumping. This occurs when the water is released from the relief valve it is a sign that a back flowing has attempted to occur.

Anti-siphon devices are somewhat the same although they usually are installed on landscaping supply lines and hose bibs. These prevent back flow by opening and allowing air to enter the line when a negative pressure situation occurs.

If you have any questions or comments about installing or maintaing your backflow devices feel free to call me at (408) 263-8433.

your plumber,

Cameron

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Repair or Replace?

Drip, drip drip.

That old faucet is leaking again or maybe you hear the toilet running. You can remember you fixed it, you just can't remember when; it doesn't seem that long ago. So the real question is should you replace that plumbing fixture or just rebuild it again?

There are several factors that will help guide you through the process of deciding.

First, when was the item made. Old parts are becoming harder and harder to obtain for replacement. If you wait to change the fixture you may have no choice the next time it fails. This may pose a serious problem depending on the time and the nature of the repair. It is better to plan a change out than have to do it right then and there unexpectedly.

Second, if your not in need of a fixture right now you can start browsing the plumbing isle at the local home center and budget for one that stikes your particular taste. When the time comes you can get the fixture you have already decided you want.

Third you can get a fixture from your plumbing professional. They may or may not have the fixture in stock. The advantages of this choice is the plumber will usually guarantee the fixture against defects for at least a year and most new fixtures come with a limited lifetime guarantee.

Whatever you decide, the fact that water is becoming more and more precious should also guide your decision making process. Old fixtures send more water down the drain and that is wasteful and harmful to the environment.

Choose wisely and look for a name brand you recognize and you can get a great fixture that will give you years of problem free service like the one your replacing.

Call me if I can help at (408) 263-8433

your plumber,

Cameron

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