We had a plumber install a water filter after we discovered black flecks in our water. (presumably these are coming from local construction) Today we discovered water damage from a cracked valve on the filter. The plumber replaced the valve with a copper valve. I was curious if the water pressure is what cracked the valve and if anyone had seen an installation like this.

http://imageshack.us/a/img255/7261/imagezkwd.jpg

Thanks.