PPN can supply the size of pasteuriser (plus ancillary equipment) you require. These are details of just one of many models.
IOPAK BRAND NEW 20,000L/Hr HTST Temperature Controlled Plate Type Milk Pasteurizer for cheese production:
SPECIFICATION: 4~35°C-65°C → 72°C 16 Sec- 4 °C
Capacity: 20,000L/Hr
Hot Water Rating: 38T/Hr
Fresh Milk Inlet Temperature: 4 °C
Pasteurizing Temperature: 72