Dairy Equipment and Manufacturing FAQ

A picture of a collection of dairy equipment at a factory.

At Zwirner Equipment, we specialize in helping dairy manufacturers find the right equipment to meet their needs. With decades of experience under our belts, we’ve heard our fair share of questions when it comes to the dairy industry. And since the demand for dairy products is growing, we’d like to share our experience.

Whether you’re a seasoned dairy manufacturer, or are new to the industry, you’re going to have questions. It’s a natural part of any manufacturing business. When you have questions, finding the right answers isn’t always easy. That’s why we’ve compiled a list of frequently asked questions on the dairy industry and the answers to each one below.

Milk Pasteurization

What is UHT Pasteurization?

Ultra-high temperature pasteurization is a process where milk or other dairy products are heated to 280 degrees Fahrenheit for two seconds before being quickly cooled down. Many dairy manufacturers use this process because UHT products have a longer shelf life. This makes UHT products a more cost-effective option for your customers. Plus, the high heat involved with UHT pasteurization kills more unhealthy bacteria.

What is HTST Pasteurization?

HTST, or high temperature short time pasteurization, is used to eliminate bacteria from milk. The process uses stainless steel heat exchangers that raise the product’s temperature to at least 161 degrees Fahrenheit for at least 15 seconds. After that, the dairy product goes through rapid cooling. The volume of milk or dairy product that needs to pasteurize each day, is the main factor in deciding if HTST is right for your business.

What is Vat Pasteurization?

Also known as batch pasteurization, this process heats every particle of the milk or cream in specialized equipment. Vat pasteurization helps get rid of disease-producing bacteria by heating the milk at 145 degrees Fahrenheit for one half hour. If your business handles less than 1000 gallons a day, vat pasteurization could be for you. It’s also a great low-cost option for dairy manufacturers.

Are There Any Disadvantages to UHT Pasteurization?

The biggest disadvantage of UHT pasteurization is that it can affect the taste of the milk. Due to how fast the milk is heated, UHT pasteurization can cause the milk to have a burnt taste. But this process is ideal for yogurt since sweeteners can be added to help fix any burnt taste.

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Heat Exchangers

What are the Different Types of Heat Exchangers?

There are four main types of heat exchangers, and each of them have their own unique advantages.

1. Double Tube Heat Exchangers: This heat exchanger has what’s called a tube-in-tube structure. One liquid flows through the pipe on the inside while the other flows around it. It’s a very affordable option and is designed to operate in tight spaces.
2. Shell and Tube Heat Exchangers: This exchanger is a series of tubes inside a cylindrical shell. It allows dairy manufactures operate with a wide range of pressures and temperatures.
3. Tube-in-Tube Heat Exchangers: Consisting of two tubes coiled together, this heat exchanger is great for producing high heat. And since they run at a higher output, these heat exchangers have greater efficiency.
4. Plate Heat Exchangers: With plate heat exchangers, metal plates are used to transfer heat between two fluids. The fluid travels inside the plates, and the greater surface area allows for better rates of heat transfer compared to other options.

Stainless Steel Dairy Equipment

Is Milk Corrosive to Metal?

While you might not expect it, milk can actually be very corrosive to certain metals. If you’re working with milk pasteurization or processing, it’s important to work with the right partner when getting your equipment. Having the right metal or coating can save your business from plenty of headaches down the line.

Can I Use Epoxy Paint on Steel?

Yes, using epoxy paint on steel is a great option for your dairy processing or manufacturing business. Epoxy paint is known for its durability and cleanliness. Some dairy businesses choose to go with enamel paint, but that choice will have you reapplying it every year. Epoxy paint on average lasts up to five years, saving you time and money. Plus, Zwirner Equipment is the only used equipment manufacturer that uses epoxy paint as part of the reconditioning process.

Find Quality Used Dairy Equipment at Zwirner Equipment

At Zwirner Equipment, we offer used dairy equipment that can help your business be competitive. Thanks to our expert reconditioning process, you get quality dairy equipment at a lower cost. If you’re interested in paying less for quality dairy equipment, contact our team today. We can answer any questions you have and are happy to discuss any specialized needs you might have.

You can count on us to be your single source for all your dairy equipment needs.

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