Exterior mixing valve for washing machine

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Pwdhomeowner

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Our tap water here seems to be about 50° or so. I want to mix in a small amount of hot water into the Cold for the washing machine cold water inlet, so that the inlet water is tepid rather than super cold. It is intended for a bidet I believe.

I have a mixing valve with a built-in one way flow valve that would work just dandy. However, the threads on it are 1/2 in NPS, and I need to connect that to garden hose thread fittings to put it between the supply and the washer

How can I connect the two with a minimal number of adapters? ( I want the cost and complexity at minima)

Garden hose adapters all have NPT threads. Braided toilet supply lines are NPS, but 3/8 on one end.

Thank you!
 

Terry

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A toilet fill valve is 7/8"
A washing machine hose is double ended with 3/4" female hose fittings.
Hosebibs come pretty standard with either 1/2" pipe threads or with 3/4" pipe threads to a 3/4" hose thread.
 

Reach4

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If you make your own mixer, you will need two check valves to avoid crossover. A mixing valve would build that function in, and give thermostatic control.

Some tempering valves only adjust down to 120F
https://www.supplyhouse.com/Watts-0...-Guardian-Thermostatic-Mixing-Valve-Lead-Free
will adjust down was low as 80F.
https://www.watts.com/dfsmedia/0533dbba17714b1ab581ab07a4cbb521/20782-source/es-lfusg-b-m2-pdf

A toilet anti-sweat mixing valve is cheaper, but does not have thermostatic action.
https://www.homedepot.com/p/Legend-1-2-in-Toilet-Anti-Sweat-Valve-SWEATVALVE/202274153
 

Pwdhomeowner

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If you make your own mixer, you will need two check valves to avoid crossover. A mixing valve would build that function in, and give thermostatic control.

Some tempering valves only adjust down to 120F
https://www.supplyhouse.com/Watts-0...-Guardian-Thermostatic-Mixing-Valve-Lead-Free
will adjust down was low as 80F.
https://www.watts.com/dfsmedia/0533dbba17714b1ab581ab07a4cbb521/20782-source/es-lfusg-b-m2-pdf

A toilet anti-sweat mixing valve is cheaper, but does not have thermostatic action.
https://www.homedepot.com/p/Legend-1-2-in-Toilet-Anti-Sweat-Valve-SWEATVALVE/202274153

thanks! This particular item has the same NPS fittings, which won’t help. However, it does have compression nuts (and ferrules I assume) that would allow me more options to colectivo to hose bibs

I looked around and found others with different connections, such as NPT that May be easier.

thanks for the input!
 

Pwdhomeowner

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The concept of a compression fitting led me hunting, and I found this item on Amazon , 3/4 hose to 3/8 compression. I can the just use a standard 3/8 to 1/2” braided supply line. Assuming they can be used with hot water.
 
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