what is a ‘cross connection’ in water supply and what is required to prevent this?
Bassam
2013-05-20 02:41:10 UTC
what is a ‘cross connection’ in water supply and what is required to prevent this?
Four answers:
Ed M
2013-05-20 14:22:36 UTC
a cross connection is the direct arrangement of piping that allows a potable water supply ( drinking water) to be connected to a line that contains a contaminant. example : a garden hose is placed in a bucket of dirty soapy water. the water main breaks and creates a negative pressure and sucks the dirty water into your clean drinking water pipes in your house. plumbing codes now demand vacuum breaker fittings installed on hose bibb valves. this device prevents syphonage from hose back into your water line. depending on application and the degree of hazzard on the application there are many devices to prevent backflow of contaminants. the best is what is known as air gap. this is why all your sink spout in buildings are above the flood rim of the plumbing fixture. backflow preventers are devices designed and used for every application to prevent cross connection contamination.
E
2013-05-20 08:04:39 UTC
Ahhhh. I just read your other two questions. Sounds like you are taking a test. A cross connection in a single family dwelling would cross connect hot and cold water supply lines. In a multi family dwelling it would refer to cross connecting supply and/or hot and cold between units rather than maintaining separate supply for each so they can be individually metered or sub metered.
?
2016-12-19 09:29:12 UTC
Ive complete pluming for years and the simply factor i'm going to visualize of is a few variety of a anti siphons form valve ? the valve does not be responsive to were the water tension is is coming from what are you interpreting instructions for besides ? try calling gerber They possibly do no longer be responsive to ?