New second floor shower stub flow rate only 1.5 gpm

by Paul M   Last Updated March 13, 2018 05:21 AM

An older shower, without shower head gets over 4gpm but the new shower is only 1.5gpm without a shower head on the stub pipe. Is there a way to test water pressure at the mixing valve? The toilet supply a few feet away is closer to 4gpm also.

Tags : plumbing

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