PrintPolypropylene Ball Valve When a ball valve is desired, polypropylene is an economical option. Inert to most chemicals, this full port valve can be used in many applications. Specs/Part #s Approx. Wt. Lbs. Size in Inches Working Pressure Model Number .75 1/2 100 @ 75ºF BV4011A20 .71 3/4 BV4011B20 2.08 1 1/4 BV4011X20 2.04 1 1/2 BV4011D20 3.5 2 75 @ 150ºF BV4011N20 4.25 2 1/2 BV4011W20 6.0 3 BV4011Z20