Alfa Laval Safety Valve

The Alfa Laval Safety Valve is a spring loaded safety valve used to prevent overpressure in tanks and vessels in the dairy, food and beverage, and biopharm industries to reliably avoid damages to human beings and equipment.

Working principle

It is used to prevent inadmissible over pressures of fluids in tanks, containers and plant sections. From the factory the valve is configured with a set pressure upon request that is greater than the operating pressure. The valve opens against a spring force if the operating pressure increases the set pressure. Preferably, the Alfa Laval Safety Valve should be installed vertically. If mounted horizontal the set pressure will be a bit lower than specified due to the missing weight of the piston. Highest effect on DN80 and DN100.

Standard Design

The Alfa Laval Safety Valve comes in sizes from DN25 to DN100 with spring loaded set pressure range from 0.2 to 12 bar. The valve can be pneumatic or manually operated. Alfa Laval Safety Valve is delivered with PED certificate. Compliance to EN 4126-1 Compliance to PED 2014/68/EC of the European Community. Fluid group II (Non-hazardous fluids). The safety valve is available for both liquids and gases*

Technical Data

Temperature
Temperature range: . . . . . . . . . . . . . . . . .+5°C to +95 °C
Max. sterilisation temperature, dry steam: . .140 °C
*DN25 for gas applications is only available for set pressure up to 1.5 bar

Physical Data

Materials
Product wetted parts: . . . . . . . . . . . 1.4404 (316L)
Other steel parts: . . . . . . . . . . . . . . 1.4301 (304)
Seals: . . . . . . . . . . . . . . . . . . . . . . EPDM
External finish: . . . . . . . . . . . . . . . . Ra 1.5-2.5 µm
Internal finish . . . . . . . . . . . . . . . . . Ra 0.8 µm
Connections: . . . . . . . . . . . . . . . . . Liner/nut – male DIN 11851
Option: Inductive sensor for feedback is available for standard and pneumatic lifting – see instruction manual for detail.

Dimensions