SB Pressure Relief Valve
Alfa Laval SB Hygienic Safety Valve
The Alfa Laval SB Pressure Relief Valve is a hygienic safety Valve designed to remove excess liquid that creates overpressure in a process tank or vessel due caused by overfilling.
When pressure in the tank exceeds a pre-set value, the pressure relief Valve opens to vent fluid in the event of liquid overfilling and closes when the tank or vessel pressure has returned below the set point. This prevents damage to the tank or vessel and helps to ensure safe operations. This safety Valve is designed to safeguard pressurised tanks and vessels used in hygienic process lines in the Brewery, Dairy, Food, Beverage and Distilling industries, among many others.
SB Pressure Relief Valve Benefits
- Cost-effective, hygienic design
- Protection against tank overfilling and pressurization
- Superior hygiene
- Customisable to meet process requirements
- Easy to clean
Nominal size
75 mm (3”)
100 mm (4”)
150 mm (6”)
Set Pressure Range
0.2 – 3.5 bar
0.2 – 2.5 bar
0.4 – 1.5 bar
Materials
Product wetted steel parts: EN 1.4404 (AISI 316L) with 3.1 cert.
Product wetted steel surfaces: Surface roughness Ra<0.8 μm (<32 μ”)
Product wetted seals: EPDM
SB Pressure Relief Valve Technical Data
Download the Full
Specification Sheet
How the SB Pressure Relief Valve Works
The Alfa Laval SB Pressure Relief Valve comes with a counterweight and is preset to the opening pressure specified by the customer. When the pressure inside the tank or vessel exceeds this set value, the Valve automatically releases the excess pressure.
Operating Principle
The preset opening pressure must be set at a value that is above the tank working pressure: 0.1 bar above for working pressures <1 bar, and 10% above for working pressures ≥ 1 bar. The Valve should be seated horizontally. A maximum inclination of 10° is acceptable, but the lever arm must then point inward toward the centre of the cylindroconical tank top.
Cleaning-in-Place (CIP)
The Valve is cleaned in the closed position by the tank cleaning head. However, this does not include cleaning of the Valve seat. To include the Valve seat as an integral part of the cleaning cycle, an optional pneumatic force opener and optional splash guard are available.
SB Pressure Relief Valve Product Documents
Recent Success Story
Alfa Laval Valves Ensure Hygienic Rennet Quality Sampling
Natural food ingredients company Chr. Hansen replaced Sampling Valves on two tanks with high quality Alfa Laval alternatives.
SB Pressure Relief Valve
Servicing & Maintenance
The Alfa Laval Valve technologies are designed for a wide range of duties across the Dairy, Food, Beverage, Personal Care, Biotechnology and Pharmaceutical industries.
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