How it works

During normal homogenizer operations the pneumatic overpressure relief valve works as a standard spring loaded relief valve: it is closed and it opens when product side pressure is higher than calibration pressure.
Possible working conditions are:
- Normal working condition. The product side pressure is lower than safety valve calibration pressure: the safety valve remains in closed position.
- Overpressure condition. The product side pressure is higher than calibration pressure: the safety valve opens.
- CIP condition. The product side pressure is lower than safety valve calibration pressure: the safety valve is in closed position and it can be opened by removing air.
Main advantages
- The spring loaded system allows immediate valve opening in case of overpressure
- Valve calibration is precise and reliable
- Auxiliary systems to control valve opening in case of overpressure are not needed
- The design of the valve doesn’t compromise safety also in case of safety valve failure (valve opening at lower pressure in case of valve components failure)
In order to clean internal surfaces of the safety valve, during CIP it is possible to open the valve by supplying air to the pneumatic actuator. All parts connections in contact with the product have gaskets to avoid metal-to-metal surfaces contact and consequently to increase safety valve cleanability.
The pneumatic safety valve has been designed with same process connection used in standard safety valve, therefore it can be installed as retrofit without any machine modification.
Reimagine liquids

It may surprise you how many products need homogenization in their manufacturing process to make them more compatible with your daily life. Stabilization and a longer shelf life have always been among the highest priorities in many different processing industries but, especially nowadays, as lifestyles continue to change rapidly, they are becoming more and more valued.
Downloads
Related Products

Homogenizers Ariete® Series
The Ariete® machines are the state-of-the-art technology for powerful reliable high-pressure homogenizers and customized solutions.

Homogenizer Compression Block Standard
The Standard compression block is a monoblock head which pumps the product up to the homogenizing valve in high pressure..
GEA Insights

The breakthrough that changed spray drying
In 1976, NIRO engineers responded to a competitive challenge by rethinking what spray drying could do. Their idea became the multi-stage dryer MSD. Fifty years later, the same fundamental principle helps turn liquids into the powders used in essential nutrition products and important medicines around the world. Refined through decades of engineering expertise, customer insight and continuous development, MSD is a story of innovation with lasting impact.

Beyond the machine: unlocking better plant performance
An efficient machine does not automatically make an efficient factory. Real improvement often starts by looking beyond individual equipment and understanding how processes, energy systems and operating decisions affect one another. It’s a holistic approach designed to uncover opportunities that might otherwise be missed.

How a valve reshapes the way food and drinks are made
In food and beverage plants, valves are commonly operated using compressed air. GEA Hydract® Actuation Technology moves valves with water instead, in a closed, digitally controlled circuit. The result is a valve that can be held exactly in place and steered in fine-tuned steps. This results in lower energy use and greater control.