Part Number: 145HS204-3 (Valve, 3 way) Part Number: 145HS205-1 (Filter) Part Number: 145HS205-2 (Filter bypass relief valve) Part Number: 145HS205-4 (Filter differential pressure ind) Part Number: 145HS205-5 (Indicator, filter) Part Number: 145HS212-1 (Check valve) Part Number: 145HS212-2 (Check valve) Part Number: 145HS212-3 (Check valve) Part Number: 145HS212-4 (Valve) Part Number: 145HS212-5 (Check valve) Part Number: 145HS213-1 (Transmitter,pressur ea77272) Part Number: 145HS217-1 (Venturi) Part Number: 145HS217-2 (Sensor) Part Number: 145HS217-3 (Sensor)