Brass Bleed Valve slowly dripping

Question

Hi all. 
Have one of my old rads the bleed nipple (small brass square type) is dripping slowly, what is the best way to try and fix this? 
Should I lock off the radiator, remove and put some PTFE and then reinstall? Or buy a small replacement and fit that with PTFE? 
Thanks I’m advance 👍🏼

Nick · Answer

Best bet is to drain down and then remove old bleed valve and replace with a new one.

Wessel · Answer

Ratvalve sealant is better I can do it yo for you system needs draining

Mike · Answer

The newer bleed nipples are unlikely to fit your old radiator. You could try taking the old one out and wrapping ptfe tape around the thread before putting back but maybe fiddly. If you do try just shut off both both ends of the radiator before you remove it. To do this take off the lock shield cap on one side and the knob on the other and shut off using a spanner or grips. Clockwise I’d off.

Mike · Answer

For the cost of replacement, it’s advisable to replace with new. They come with a black o-ring already so no need for PTFE. Just clean the thread of the radiator with some kitchen roll before screwing in the new one.

Kam · Answer

Hi Charlie. Best to get new valve to replaced. Kam  from krato plumbing service.

Joshua · Answer

Good afternoon, I would suggest removing the bleed valve and replacing with new. Some liquid PTFE will resolve your issue.  Thanks,

Ross · Answer

Just buy a replacement it’s much easier plus they font cost a lot

Adam · Answer

For the price of them I’d replace the valve where the bleed nipple is located.

Anthony · Answer

Central heating leak sealer from Screwfix
They do 2 types one you pour into any radiator (towel rail if fitted is best) the sealant will seal whole system without damaging boiler or rads run system for a couple of hours after to circulate sealant 
The second type attaches to fill loop and does the same

Tommee · Answer

Turn off the radiator trvs and drain down the radiator. Buy a replacement bleed valve and install onto the radiator. Buy some inhibitor as well and pour into the system before you re-pressurise the system.

Brass Bleed Valve slowly dripping

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