SharkBite Max, 3/4" Elbow with 1/8" NPSM Thread Drain/Vent, lead free. Each Brass Push 90° Elbow with Drain / Vent allows for water to be drained from the line if needed. Common applications include draining irrigation systems or hose bibbs when winterizing. Compatible with PEX, copper, CPVC, PE-RT and HDPE pipe. Ideal for working in tight spaces. Faster install time and ease of use reduces installation errors.