Safety valve
The Alfa Laval Safety Valve is a versatile hygienic spring-loaded relief valve that prevents pressure buildup in process tanks, vessels and equipment due to blocked discharge, thermal expansion, chemical reactions, or a combination of these events.
Compact spring-loaded relief valve that minimizes the risk of implosion of tanks when a vacuum condition arises
- Safe, reliable operation
- Hygienic design
- Prevents unsanitary leakage and overflow
- Safeguards both personnel and equipment against accidents due to overpressure
- Optional manual or automated overwrite for valve cleaning
This safety valve is ideal for use in the dairy, food, beverage, biotechnology, pharmaceutical and many other industries.
How does the spring-loaded relief valve work?
Construction
The Alfa Laval Safety Valve comes in sizes from DN25 to DN100 with spring loaded set pressure range from 0.2 to 12.0 bar. The valve can be pneumatic or manually operated. The Alfa Laval Safety Valve is calibrated to the desired pressure set point, sealed and delivered with a corresponding PED certificate.
Operating principle
The closing force in the safety valve is applied by a compressed spring with a set pressure greater than the operating pressure.
In a potentially dangerous situation, the spring-loaded relief valve will open at the predetermined set pressure. The spring force acts in the closing direction and the force created by the pressure at the inlet of the safety valve acts in the opening direction. At a certain point, these forces will be balanced out and the safety valve will make an initial discharge to relieve the pressure.
Relieve excess pressure
Pressure can build inside vessels or systems due to blocked discharge, thermal expansion, chemical reactions, or a combination of these events. The spring-loaded relief valve is designed to flexibly relieve excess pressure from vessels or equipment at all times and under any circumstances. As the last and vital component in accident prevention, a high-quality, hygienic safety valve is an essential part of your operations.
Get the perfect fit
Depending on the causes of excess pressure, a different mass or volume flow may need to be discharged. With this type of variable flow, a perfectly fitted safety valve is essential. The Alfa Laval Safety Valve comes in sizes from DN25 to DN100 with a spring-loaded set pressure range between 0.2 and 12.0 bar depending on the size of the valve.
Reliable protection
In a potentially dangerous situation, the Alfa Laval Safety Valve is designed to open at a predetermined set pressure. The compressed spring force, which keeps the valve closed below the set pressure, is forced open when pressure builds up at the inlet of the safety valve. As these forces balance out, the valve will discharge and decrease pressure, ultimately reclosing as the system returns to normal.
Close at Hand catalogue
The hygienic equipment product catalogue "Close at hand" includes product leaflets, links to animations, brochures and lists for ordering purposes.
CAD portal
The Alfa Laval CAD portal is an essential platform for downloading detailed product information, 2D drawings and 3D product models.
Service
Our dedicated Global Service Network supports you with parts and expertise, wherever you are, whenever you need it. By ensuring greater uptime, availability and optimization, we help bring you peace of mind, and maximize your return on investment. We can work with you to integrate our services into an Alfa Laval Service Agreement for predictable and worry-free operations.
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Part of a broad valve range
Alfa Laval offers a comprehensive range of valves intended for hygienic applications in various industries including dairy, food, beverage,home care, personal care, biotechnology and pharmaceuticals:
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