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Old 10-25-2013, 07:17 PM   #9
LaBomba
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City: Beaverton, Ontario
Vessel Name: Looking Glass
Vessel Model: Carver 370 Voyager
Join Date: Nov 2012
Posts: 1,240
Because the hot and cold water lines are separate and have a different path, number of elbows, hot water tank etc., the flow through each line will vary depending on pressure. On a dock hookup it would be fairly constant and thus the stable temperature/pressure. On the DC pump the only way I have found to get around this pressure/flow imbalance is by installing a temperature compensating or pressure balancing shower control valve. We had the same issue on our fifth wheel RV as well. Have a look at this link. They are available at all big box stores like Home Depot but will mean a little work to install.

KOHLER | How to Shop for Shower Valves and Controls | How to Shop for Bathing Products | How to Shop Bathroom Products | Bathroom Ideas & Planning | Bathroom |
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