What is this drain cock

[merlix]

This drain cock is blocked.
I was planning to remove it. There is written 1/2 on it.
However the new drain cock I bought with size 1/2 appears a bit smaller than the one installed.
Please check the picture.
Have you seen this drain cock? I can't find it anywhere online so I wonder if this is very old.
Is my new drain cock the same size?

 

[Crofton Gas]

Search 1/2" drain off valve...your find one

 

[polesapart]

When you've unscrewed the old one you'll be able to compare the threads.

The odds of success are good.

 

[muggles]

They look the same to me

 

[Madrab]

OP ... As far as you need to worry then they are the same, the new one will replace the old. Don't forget to seal the threads.

 

[45yearsagasman]

You'll need to drain down before fitting the new drain cock. Hope that's not the only drain point.