Drain valve dripping from Oil Boiler

vermont_flatlander

This might be relatively simple for you experts but I'm fairly new to the plumbing DIY space.

We had a leak from a Taco Hy-Vent. In order to relieve pressure and remove water, I opened the drain valve from the oil boiler. I was able to drain it fine but when I closed it, there's now a very slow drip every couple of seconds. I think it's just very old and the valve just corroded in some way that it's not a full seal.

Anyways, I'm looking to replace it but I'm unsure if I can replace just the bibb/spigot or if I need to also replace what looks like a reducer behind it.

Attaching a screenshot for more info:
https://i.imgur.com/FOFjGeu.jpg

Appreciate any help!

pecmsg

Open and close a few times and pray you get lucky. 

If that doesn’t work they make caps for emergency use!

Jamie Hall

They'll do that... which is why they make caps to fit over them. That's a hose bibb thread on the outlet, and I imagine that any decent hardware store or one of the Big Boxes will have them.

mattmia2

Should be able to take the packing nut off and take the stem out and replace the washer.

HVACNUT

mattmia2 said:

Should be able to take the packing nut off and take the stem out and replace the washer.

It's a lot easier to just replace the whole valve. 

Intplm.

Ask for a boiler-drain cap at your nearest hardware or plumbing supply house.

Hand tighten till the drip stops.