Hydraulic Separators: Explained

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Hydraulic Separators: Explained

Written by: Jackson Systems



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As HVAC setup’s advance, they become more and more compatible with systems that utilize different heating and cooling elements. Boiler’s now serve as an excellent backup source for geothermal or solar panel systems. One of the benefits of applying a water heating source is the flexibility and low cost of a hydronics’ system.

Today we’ll be discussing a modern part for hydronic setups that can make these systems more efficient. It also makes for an easier to setup, and a less convoluted piping system. The hydraulic separator is the unsung hero of any proper hydronic system that uses multiple load systems or require multiple circulators.

But what exactly is a hydronics system and how does it work?

Simply put, a hydronic HVAC system uses water as the primary energy transfer method for heating or cooling. They require a boiler for the heating element and a chiller or cooling tower for the AC. The treated water transfers through the building to air handling units where stored energy is applied to air ventilation. The success of a hydraulic system depends on the organization and products chosen to connect the piping circuit. The contractor can make decisions on flow water to the heating/cooling element, transfer the energy to the air handler, and successfully get it back to their respective tanks.

The major advantages to these systems can be low installation/operation costs and extremely quiet operation. Where this process can be tricky, comes down to how well your licensed professional sets up the piping and technology that moves the water throughout the system. If they aren’t considering the benefits of hydraulic separators, a professional might opt for an easier setup option like closely spaced tee’s.

What does the hydraulic separator do?

In a hydraulic HVAC setup, if the building or home uses both heating and cooling or has multiple circuits for additional load systems, a hydraulic separator is a great option for preventing flow from another circuit. They eliminate the need for multiple parts add on parts that are normally be included in setup. With one hydraulic separator you no longer need a primary loop circulating pump, air separator, and strainer. It also improves and allows multiple circulators to operate independently without interfering with each other.

The Resideo Hydraulic Separator has a unique dirt separator feature that eliminates any debris inside the circuits. This is possible because of the magnet and metallic mesh surfacing that catches impurities that then are removed through the discharge valve.

When is a hydraulic separator my best option?

These separators thrive in low temperature setups. The hydraulic separator can function anywhere from 40 to 260-degree settings for chilled water. Another major benefit to a separator comes from its ability to separate microbubbles of air passing through the upper portion. This usually is the task of an air separator.

Without some source of fluid condensing issues will start to arise within the hydraulic system. You could potentially risk lubrication issues, unusual noises, poor response time from equipment, fluid degradation and unnecessary temperature rise. If you are looking for a simple solution for multi-zone systems or just want to save time and money on parts, the hydraulic separator is truly the best bang for your buck.


We carry an extensive line of hydraulic valves, zoning panels, pumps, and much more here at Jackson Systems. For more information check out our hydronic product overviews. As a homeowner, reach out to your local contractor if you think a hydronic system is right for you. We also have extensive hydronic trainings if you’re interested in learning more about installation and correct safety methods. As always, contact us with any questions you might have about hydraulic separators or other hydronic equipment.

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