The Milky FJ 50 E is a multipurpose stainless dairy kettle designed for controlled heating and cooling of milk for products such as pasteurized milk, cream, yogurt, and cheese. It’s an open-type unit that uses a double-wall water jacket for gentle, even heating and water-jacket cooling.
How it heats:
Think of the FJ 50 E as a stainless pot sitting inside a second stainless pot:
The inner pot holds your milk (or mix).
The space between the inner and outer walls is the water jacket.
An electric heater warms the water in the jacket, and that warm water transfers heat through the stainless wall into the milk.
This means the milk is not heated directly by an element. Instead, it’s warmed by the surrounding hot water in the jacket, which helps provide more uniform heat.
Control features (time + temperature)
The control unit allows you to set:
Temperature setpoint: 68°F to 210°F
Holding time: 0 to 999 minutes
Important detail about the temperature display!
The temperature you set on the controller refers to the secondary heating water (the jacket water), not the milk itself. Because heat has to travel: jacket water → stainless wall → milk, the milk temperature will lag behind and should be measured separately for accuracy.
Best practice: use a separate thermometer/probe to confirm the actual milk temperature, especially for pasteurization steps.
How cooling works
Cooling is done by running tap water (or chilled water if available) through the water jacket. You open the valve to the inlet hose, cooling water flows through the jacket, and exits through the outlet hose. Cooling speed depends on your water temperature and flow rate.
Typical use workflow
Fill the water jacket first (critical). The manual warns not to start heating until the double wall is filled with water.
Add product to the inner tank. Minimum batch for processing is 10 liters (2.6 gal) (20% of total capacity).
Set the controller temperature (jacket water) and your hold time.
Monitor the milk temperature separately to confirm when the milk reaches your target temperature.
When finished heating/holding, cool by running water through the jacket until your milk reaches the desired temperature.
Setup notes
When filling the water jacket, the manual advises keeping the flow to no more than 3 L/min (0.8 GPM).
The jacket outlet hose should be no longer than 3 meters (per manual guidance).
Cleaning and care
Clean the milk pot and lid with hot water and fat-soluble detergents, then rinse with clean water.
Avoid abrasive cleaning materials and keep water away from electronics.
