Designed for use with two spray nozzles for high and low pressure. Dual nozzle selector enables the operator to use a downstream injector for corrosive chemical injection. Simple right to left turn rotates ball to open high or low pressure passage. Maximum flow is 7 GPM, Maximum pressure is 3000 PSI. Inlet port is 1/4" FPT. Nozzle ports are 1/4" FPT.