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Danfoss launches OFC, a game-changing discharge solution for oil-free systems

The new innovative solution for oil-free heat pumps and chillers enhances the systems’ efficiency and reliability. The oil-free centrifugal market is growing exponentially around the world driven by a need to reduce system running costs, complexity, and system size.

Danfoss launches OFC, a game-changing discharge solution for oil-free systems

The new Danfoss OFC check and stop valve incorporates a damped nozzle check valve, stop valves and diffuser function to address the major application pain points.

Higher compressor and system reliability
The nozzle check valve remains open at minimum flow, closes quickly if there is a system stop generating refrigerant backflow, and improves stability during surge, closing and opening for enhanced compressor reliability.

Decoupled stop and check functions allow fast access and improve reliability of sealing. The lock ring design prevents unintentional ball valve closes.

The OFC valve has a built-in sight glass which provides direct visibility of proper check valve functioning, and the built-in pressure port connects to a high pressure cut out as an added safety measure.

Higher system energy efficiency
Minimizing pressure losses is critical to ensure optimum system efficiency. This is even more important at part-load conditions needed to meet the latest efficiency guidelines. Optimizing the flow path within the valve improves flow capacity and reduces pressure drops by up to 70% compared to using an alternative piston type valve, axial wafer valve or swing wafer.

Reduced system complexity, installation, and maintenance costs
Production planning is much simpler as the OFC valve is an all-in-one solution. There is no need to combine multiple components and store spare parts in inventory. Installation is fast and easy, allowing companies to start production quickly with shorter lead times. The OFC valve can be set up in three positions, either vertically, horizontally or at a 45-degree angle in order to optimize space and minimize piping.


Danfoss launches OFC, a game-changing discharge solution for oil-free systems

The new OFC valve is compatible with the Danfoss portfolio of TT and TG Turbocor® compressors - the world’s first oil-free magnetic bearing compressor for the HVAC industry.

“At Danfoss we are continually developing components for efficient oil-free systems,” said Frank Ford, Director of Product Management at Turbocor®. “With the OFC check and stop valve, customers can avoid high pressure drops and unstable performance.

Through our innovative approach we have patented the check valve design used in the centrifugal compressor discharge line. There is no other product on the market today that has the capabilities of our unique OFC check and stop valve.”

Victor Marinich, Global Segment Director at Danfoss Air Conditioning said: “We are dedicated to supporting HVAC professionals by providing solutions that overcome the challenges they face. The OFC check and stop valve is just the latest in a line of new products within our extensive oil-free portfolio. We will soon be introducing ETS 175/250/400/500 L electric expansion valves dedicated to oil-free and high-temperature applications. They are complementing the recent releases within our portfolio of expansion valves and accessories such as the EKF stepper valve driver and the EKE 2U power module, and a brand new superheat controller platform—EKE 100— which will be released in 2023. All that together support reliable, high-performance oil-free systems.”

www.danfoss.com

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