SB Pressure Relief Valve

The Alfa Laval SB Pressure Relief Valve is a hygienic safety valve that removes excess liquid that creates overpressure in a process tank or vessel due to 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 help ensure safe operations.

Designed to flexibly relieve excess pressure from vessels or equipment

Cost-effective, hygienic design
Protection against tank overfilling and pressurization
Superior hygiene
Customized to meet process requirements
Easy to clean

This safety valve is designed to safeguard pressurized tanks and vessels used in hygienic process lines in the brewery, dairy, food, beverage and many other industries. The valve can be integrated with a SCANDI BREW® tank top system.

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Effective pressure relief

This pressure relief valve removes excess liquid that creates overpressure in the tank due to overfilling. When pressure in the tank exceeds a preset value, the pressure relief valve opens to vent fluid in the event of liquid overfilling, and closes when the tank pressure has returned to a safe level.

Easy-to-clean hygienic design

Few moving parts and smooth, crevice-free stainless steel surfaces make this valve easy to clean. When the valve is in closed position, it is cleaned as part of the routine Cleaning-in-Place (CIP) cycle. For thorough cleaning of the valve seat, an optional pneumatic force opener and a splash guard is available.

Product benefits

Cost-effective, hygienic design
Superior hygiene
Customized to meet process requirements
Easy to clean

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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How it works

Construction

The Alfa Laval SB Pressure Relief Valve is a dead weight safety valve. It is compliant with PED 97/23/EC, EN 4126-1 and EN 764-7 and is available in two versions:

Integrated with a SCANDI BREW^® tank top system

Mounted on its own counter flange

Operating principle

The pressure relief valve is delivered with the counterweight set and locked at the preset pressure that meets the customer’s requirements for opening pressure. When pressure in the tank exceeds the preset opening value, the valve relieves the excess pressure.

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 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.

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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Food Logic

Alfa Laval's hygienic equipment combines high performance with gentle handling to preserve sensitive ingredients and keep up with the food industry trends. The equipment addresses four key challenges; supplying food products to consumers at a competitive price, getting the most from raw materials, reducing waste and emissions, and delivering safe and hygienic food products.