PrintPVC Air Evacuating Valve Maximizing operating efficiency by evacuating air from the piping system, this valve is specifically designed for piping systems with slope changes and large sections. Specs/Part #s Approx. Wt. Lbs. Size in Inches Maximum Pressure Set Up Model Number .46 1/2 150 Threaded ARV050T .48 3/4 ARV075T .86 1 ARV100T .97 1 1/4 ARV125T 1.74 1 1/2 ARV150T 2.18 2 ARV200T 3.97 2 1/2 ARV250T 4.48 3 ARV300T 5.31 4 ARV400T