It will also replace the S30 valve cap.
2" Pressure Barrel Cap With S30 Valve & Piercing Pin For Homebrew Beer Kegs
2" Pressure Barrel Cap With S30 Valve (Non Piercing Pin) For Homebrew Beer Kegs
2" Pressure Barrel Cap With S30 Valve (Piercing Pin Type) For Homebrew Beer Kegs
2" Cap with Rubber for Presure Barrel Home Brew Beer Making
Home brew barrel pressure test valve for 4 inch cap
Plastic Cap Spanner For 4" Home Brew Barrel Caps - Including King Kegs