High Pressure Injection Quills are used to inject chemicals pumped by metering pumps into the turbulent flow zone of high pressure water or steam lines. • Use to 3,000 psi • Built-in check valve or without (QB......High Pressure Injection Quills are used to inject chemicals pumped by metering pumps into the turbulent flow zone of high pressure water or steam lines. • Use to 3,000 psi • Built-in check valve or without (QB Models) • Available in PVC, Kynar, 316SS and C-20