Trieste J Blanking plug for Voit Valves and Trieste J regulator

For those of you who own Voit/Swimaster tank valves that were produced from the late 60s to the early 80's, you know how the reserve poppet seat material deteriorates over the passage of time. I personally own several of the J-valves that have been rebuilt, and I have yet to find one that has had the seat material fully intact. Until now, I was forced to reinstall the reserve mechanism minus the seating material. In effect, I had a K-valve, with the external appearance of a J-valve.

The valve body for the J-valve and K-valve is identical. The only difference being the blanking plug that was installed where the reserve mechanism would normally go. This was also the method used on the Trieste and Trieste II DH models. You are buying one plug.