VARIVENT® Overflow Valve Type Q

What is the VARIVENT® Overflow Valve Type Q?

The VARIVENT® Type Q valve is a hygienic valve designed to safely reduce pressure peaks in piping systems. It reliably protects plants, products, and components against excessive pressure, particularly downstream of positive displacement pumps.

Reliable reduction of pressure peaks in hygienic processes

VARIVENT® Overflow valves type Q are used to reduce pressure peaks within piping systems. They are mainly applied for overpressure protection downstream of positive displacement pumps, ensuring reliable protection of plant components and products.

Flexible pressure control for different process requirements

The VARIVENT® Overflow valves type Q is equipped with a manually adjustable actuator that allows precise regulation of the valve opening pressure. This makes the valve suitable for a wide range of hygienic applications in the food, beverage and process industries.

Actuator variants at a glance

GEA offers three spring-closing actuator variants to optimally meet different operating and cleaning requirements:

• Type F – Mechanical adjustment

  The Type F actuator allows the response pressure to be set via an adjustment screw. Ideal for: applications with stable and constant process conditions.

• Type M – Support during pipe cleaning (CIP)

  The Type M actuator includes an additional integrated pneumatic function. This allows targeted lifting of the valve disc during CIP cleaning, supporting reliable and hygienic cleaning processes.

• D-Force actuator – For demanding pressure conditions

  The D-Force actuator combines the mechanical Type F actuator with an additional air/air actuator. This enables the valve to be kept closed against pressures higher than the mechanically set opening pressure. Typical application: carbonated beverages, where pressure increases can lead to degassing and foaming inside the pipeline.

Typical applications

VARIVENT® Overflow valves type Q are used in a wide range of hygienic process applications, including:

• Overpressure protection for positive displacement pumps
• Bypass valve in case of pressure peaks
• Vent valve in piping systems

Materials & seals

For hygienic applications, static seals are available in the following materials:

• EPDM
• FKM
• HNBR

This allows optimal adaptation to different media and process conditions.

Benefits of VARIVENT® Overflow valves type Q

• Response pressures up to 20 bar
• Three actuator types for different applications
• Low investment and maintenance costs
• Proven VARIVENT® sealing geometry
• Reliable protection for plant and product