HoseXpress makes 4-bolt and 6-volt polypropylene ball valves. The four-bolt model is a standard port valve, in 1" and 2" sizes, while the 6-bolt model comes in sizes from 1/2" to 4". These valves have a maximum working pressure of 125PSI at 70F, with EPDM o-ring seals, 304 SS nuts & bolts, and female x female NPT ends.

Flowserve is a supplier of control and and quarter turn-type plastic ball valves manufactured by Atomac, Worcestor Controls, NAVAL, Valtek, NAF, and Noble Alloy.