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Backflow prevention on cleaning water lines

Sanitation FDA regulation

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#1 ganderson64

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Posted 28 July 2016 - 04:06 PM

Just received a suprise inspection from state / FDA inspectors. One of the minor findings was the lack of backflow prevention for the water lines used for hoses / cleaning. Anyone else seen this? We have backflow prevention on main line into the facility. I have never encountered this requirement.

 

If you have and corrected it, where did you source your very inexpensive in-line backflow preventers?


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#2 redfox

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Posted 29 July 2016 - 01:57 AM

Dear ganderson64,

 

It is just a check valve put before your faucets where you connect your hoses. Check valve which is spring loaded is good option that is we are using in our plant.

 

regards,

redfox


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#3 moskito

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Posted 20 August 2016 - 03:55 PM

Dear ganderson64,

 

I am not an engineer, so description might not be technical correct.

We have e.g. special backflush valves which is state of the art in my country (Germany) and many others too. It is not permitted (on industrial or private level) that water can be "re-introduced" into the drinking water system. This has to be prevented by installation/mechanical separation in any case.

 

Rgds

moskito


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#4 Slab

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Posted 21 August 2016 - 03:38 PM

Just received a suprise inspection from state / FDA inspectors. One of the minor findings was the lack of backflow prevention for the water lines used for hoses / cleaning. Anyone else seen this? We have backflow prevention on main line into the facility. I have never encountered this requirement.

 

If you have and corrected it, where did you source your very inexpensive in-line backflow preventers?

 

Hi, Ganderson;

 

You are required by code to have either air gaps or backflow prevention on all potable lines in service between municipal connection and internal plumbing. Cross connections to waste/treatment are also a major issue for potable feed (e.g. chemical dosing on boiler or cooling tower treatment). 

 

The main concern being momentary loss of positive (resulting in siphonage or suction) pressure which may in-turn, upon return of positive pressure, discharge water unsuitable for food back into the internal lines.

 

Vacuum Breaker

 

Backflow Preventer

 

Both of which are relatively low cost and maintenance free.


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