6500 by Dixon Valve | 6500-Series | Self-Locking Drop Elbow | 4" Size | Tightfill Elbow With Locking Handle | AluminumFeatures: Most parts are common through the Bayco elbow line, making any necessary maintenance a breeze. Grease nipple enables the greasing of the lever stem, and Acetal bushings help keep everything moving smoothly, even in the harshest of conditions. Bolt on inlets allow the inlet to be changed without having to worry about galling of threaded inlets. Ball lever handle enables the operator to easily and positively engage the locking arms, onto the