Features : Heavy duty aluminum alloy construction. Center of gravity at handle for easy operation. Unique locking action that insure positive connection and uniform seal compression at fill adapter. Product port (liquid inlet) on top and vapor port on bottom to eliminate vapor interference when draining product. 360° round sight glass on top for easy monitoring. 5° angled four bolt flange pattern with variety of different inlets and outlets to meet any requirement. Coaxial elbows meet stage 1 & 2 vapor recovery standards.