Features : Heavy duty aluminum alloy construction. Center of gravity at handle, easy to operate. Push to couple, pull to release. Check poppet opens automatically when elbow is connected to fill adapter and close automatically when elbow is disconnected. Spillage of product is avoided when lifted from adapter. Unique locking action that insure positive connection and uniform seal compression. 360° round sight glass window on top. 5° angled four bolt flange pattern with a variety of different inlets to meet any requirement.