Available in sizes from 3/8–2 in., High Purity Pressure Control Valves incorporate patent-pending piston that eliminates use of elastomers and particle shedding. High-purity operation is further optimized via threaded bonnet, which has no exposed metal bolts. Modular system allows user to adjust set pressure range and go from reducing to retaining (or vice versa) by switching cartridge. With online sizing tool, customer can determine proper valve size and prevent valve damage.