The Betts 3” Top Unloading Valve is a hydraulically operated self-closing stop valve designed for installation on top of tanks which are top unloaded. The compact design mounts to a standard 4” TTMA sump flange bolt pattern. Valve is built with 316 stainless steel and uses Teflon and TEF-SIL encapsulated seals for compatibility with a wide range of products.
The 316 stainless conical stand-pipe adapter is mounted between the valve inlet flange and the sump flange and projects into the tank so that a stand-pipe can be welded in place. The adapter is supplied ready to fit-up with a 2” pipe, but the conical design allows it to be cut back to fit larger pipe sizes as well. Order adapter separately.