Hot Water - Low Flow

[Calinfornian42]

Hi All -
Wondering if anyone has had an issue w/ the their hot water flow/ volume being much lower than the cold water. I have a 10gallon Torrid water heater.
I've removed the outlet line which feeds the distribution lines and it's clean - there's no buildup. Yet, I get low flow on all faucets and showers. The cold water flows just fine. Any input or ideas on this would be appreciated.

Thank you!
Californian42

[SailingHarmonie]

Some hot water systems have a check valve on the inlet to the water heater. If that is not opening cleanly, that can be the cause.

Start breaking lines, and seeing where the flow restriction begins. It's not rocket science, it's plumbing. If there is a hole big enough for the water to flow through, it will.

[boatpoker]

The line from my water tanks to the water heat and back to the faucets is twice as long as my cold water lines ... Friction loss is my issue.

[sailorboy1]

I have an antiscald valve on my heater outlet. It sometimes sticks and I need to cycle it. I understand some HW units have one of these built in.

[Bowdrie]

Originally Posted by SailingHarmonie

Some hot water systems have a check valve on the inlet to the water heater. If that is not opening cleanly, that can be the cause.

Right.
Shore systems, where we are using huge quantities of hot water at municipal pressure tends to keep the check valves more freely operating.
On boats hot water is treated as almost sacred, generally using as little as possible as infrequently as possible.
The common "flapper" check valves get sticky and are not really necessary on boat water heaters.