4port 3position, 4HV230C, 4HV330C, 4HV430C; Center closed, center exhaust, center pressed; Port sizes: 1/8", 1/4", 3/8", 1/2", 3/4", 1".
Hand rotary valve, 4-way, 2-position, 4-way, 3-position, 4HV series (PDF)