Leaking Compression Valve

[M111]

Hello!
I'm experiencing a leak in a water compression valve that runs to our backyard. I've been using it recently to hose our garden, and just today it starting a slight leak when the valve is shut and a bigger leak when it's open.

I read that the packing nut could need tightening, but it wouldn't budge for me with a lot of WD40 and an adjustable wrench. The leak is coming from just below the knob (attached 2 pic). Any ideas of what I could use to loosen the nut or if the issue might be something else altogether?

Cheers,

Matt

 

[breplum]

WD40 is worthless as are "penetrating" oils.
Obviously it was built using that nut, so getting better leverage is normal suggestion or, turn water off, drain the pipe at the bleeder and heat the valve a bit.
If you do get it apart, rebuild and lubricate with silicone valve grease.
Better yet, replace

 

[M111]

WD40 is worthless as are "penetrating" oils.
Obviously it was built using that nut, so getting better leverage is normal suggestion or, turn water off, drain the pipe at the bleeder and heat the valve a bit.
If you do get it apart, rebuild and lubricate with silicone valve grease.
Better yet, replace

Thanks for your advice! Is there anything other than an adjustable wrench I should try using?

 

[CT18]

The packing nut is the smaller nut up close to the handle, not the larger nut on the valve body. It is hard to tell in your pics. The packing nut is around the valve stem

 

[TomFOhio]

Replace it and put a ball valve in.