CHECK VALVES - 460 SERIES Pacific Bay Equipment Sale! from $39.10 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. CHECK VALVES - 460 SERIES, HIGH PSIHolds pump prime without overloading pump suction. Max PSI: 2500 Buna Seals Stainless-Steel Check Ball & Spring Machined-Brass Body Ranges from thread size to PSI If you need help finding the correct size, give us a call!