Quote:
Originally Posted by lorilorilori
alternative - remove the screen and leave the brass fitting. Wonder who in the world made these mandatory !!! 
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If you hook up your hose to a fertilizer. or put the end of the hose into a bucket of foul water, you can contaminate the water supply if any kind of negative pressure occurs, which can be something as simple as flushing a toilet. This device breaks the connection to stop it from happening.