Washer Hookup - hot tap leaking

[DripSplashDrip]

My hot water tap that connects to the washing machine is leaking at the handle. I have to replace the tap but I don't know where to start.

As you can see by the pictures, there is no recessed box. How would I install one? Also, the water drain is on the adjacent wall. The taps are 7 inches apart. Any ideas on how to begin?

 

[hj]

It would help if the picture was from the side so we can see what you are working with.

 

[Sponsor]

 

[DripSplashDrip]

Here is another picture of the side wall with the drain hose.

 

[Reach4]

For the box etc, do you have a basement? Are you expecting to put the standpipe into the box, or just the two spigots?

How about a picture that includes the leak? Yes, from the side.

If you turn off the valve, does the leak stop?

 

[DripSplashDrip]

Thanks for the reply.

My main goal is to stop the leak. The hot water tap is turned completely off and it still leaks where the rust spot is (on the underside).

 

[Smooky]

I'm guessing that the valve has to be fully open or fully closed not to leak. I would try fully opening the valve first.
I think this is the stem for your valve:
https://www.amresupply.com/part/ULNE4-EMCO-LAUNDRY-CARTRIDGE-OEM-51#

You could shut off the water and unscrew the existing valve and replace it with a valve that is less likely to leak.

 

[DripSplashDrip]

Thanks for your help. I'll try that.