New gaskets

To bring the gasoil from the bunkers to the settlingtanks (daily use tanks) we use a so-called trimming pump. 
It was about time to replace the gaskets of the valves in this system by new ones. 
It took us one day work to get the valves out, clean all the surfaces, make new gaskets and put it all back into place. But: we did it and the system is ready to use again..... Here is one of the valves.