Dezincification-resistant (DZR) forged brass resists corrosion from exposure to a wide variety of water conditions;Bottom-loaded, blowout-proof stem features a dual-seal PTFE packing and EPDM rubber O-ring design, assuring positive sealing under a multitude of conditions;Self-cleaning stainless steel ball resists mineral build-up and scaling;The drop-ear-drainable configuration, when properly fastened to supports, drastically reduces tubing stress by dispersing the operational twisting force through the valve’s body, verses the tubing connections