POLYPROPYLENE BALL VALVES Pacific Bay Equipment Sale! from $44.90 Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. BALL VALVES - 454 SERIES, POLYPROPYLENE, LOW PSIFull port reinforced polypropylene body for strength &chemical resistance. Max PSI: 240 Working Pressure Teflon Seats for smooth operation & proper sealing. Double EPDM O-Rings in Stem for "No Leak" Threaded Mounting Brass Inserts on 1-1/4" - 2" Sizes 8mm Mounting Inserts If you need help finding the correct size give us a call!