Seacock

[Dennis1]

I am a new member. I have groco sv series seacocks that need parts. Are parts still available our should I just replace?

[HopCar]

Welcome aboard!
If my memory is working, the SV series of seacock used the big rubber plug.
Groco stopped making parts for those about twenty years ago. Even if you found the rubber part sitting on a shelf somewhere it would be at least twenty years old. Time to replace the seacocks.