Introducing Tank Blanketing

2/2 way Bellow Control Valve

In this specialist informative guide we take a look at the 2/2 way Bellow Control Valve and its suitability for fermentation tank blanketing solutions, read on to find out more about the application and the valve...

Fermentation tank blanketing

The hygienic control valve system below demonstrated its all-time high safety values in tank blanketing. The system itself builds upon two hygienic control valves of Type 2380. These compact, lightweight and CIP/SIP-capable valves are suitable for virtually any pressure, low-flow and filling control application in hygienic environments, where they also introduce new levels of precious productivity and quality.

hygienic control valve system

For neutral and aggressive media
Media separation by PTFE bellow
Hygienic design

Control Valve

Function Diagram

Fluidic applications carried out in
tanks – like fermentation or storage –
often require the precious media
to be protected from reacting with air,
oxygen and other ingress.

A pressurised inert gas layer above
the media serves to maintain a
stable chemical balance.
This process is known as tank
blanketing and commonly utilised in
pharmaceutical and biotechnology
industries.

Building upon the new hygienic control valve Type 2380, a truly robust system is in charge of increasing safety levels in tank blanketing and many more demanding applications.

Although a seemingly simple process on the surface, the strict requirements with respect to cleanability and cross-contamination prevention – mandated by the highly regulated pharma and biotechnology industries – introduce a new level of complexity to this application.

Standard off-the-shelf components typically used for tank blanketing inherently cause issues with cleanability, are highly susceptible to contamination and can result in risk issues and erratic failure rates due to naturally acidic carbon dioxide or other aggressive foam upon exhausting. They are simply not fit-for-purpose.

Downtimes, maintenance costs and compromise of product quality are all risks introduced by utilising the common standard solenoid components. Liberating pharma and biotech manufacturers from these heavy drawbacks, This hygienic control valve system is in full charge of rapidly increasing safety for tank blanketing and virtually any pressure, flow and filling control applications in clean environments.

Line Break

The bellow control valve is a pneumatically operated process valve with a single-acting diaphragm actuator. A PTFE bellow ensures the separation between medium and actuator. The materials used and the design of the media space allow the use under hygienic or aggressive conditions. It has good cleanability. The combination with a controller (Type 869x) and the control cone integrated into the bellow enable the valve to handle demanding control tasks

	The space-saving actuator with low internal volume not only results in a very compact size but also in remarkably low response times. The valve is characterized by a good control performance due to the low- friction design and has a linear characteristic. A certain variety of body and block system solutions are deliverable. Main fields of application: Food & Beverage industry Pharmaceutical & Biopharmaceutical industry Cosmetic industry

Positioner TopControl Basic Type 8696 Features: Hygienic stainless steel design according to EHEDG guidelines Contact and wearless analogue position sensor Universal positioning system for single and double-acting actuators Simple design Simple and safe start-up by teach function High plant availability through increased drive life by spring chamber ventilation Little space requirement in the plant piping	Positioner TopControl Basic Type 8694 Features: Hygienic stainless steel design according to EHEDG guidelines Contact and wearless analogue position sensor Universal positioning system for single and double-acting actuators AS-Interface Field bus communication Simple design Simple and safe start-up by teach function High plant availability through increased drive life by spring chamber ventilation Little space requirement in the plant piping

Positioner TopControl Type 8692 Features: Hygienic stainless steel design according to EHEDG guidelines Contact and wearless analogue position sensor Universal positioning system for single and double-acting actuators Highly dynamic positioning system without internal control air consumption Integrated diagnostic functions for valve monitoring Ensuring failure of the electrical or pneumatic power supply Profibus DPV1 or DeviceNet Field bus communication (optional)	Positioner & Process Controller TopControl Type 8693 Features: Hygienic stainless steel design according to EHEDG guidelines Contact and wearless analogue position sensor Universal positioning system for single and double-acting actuators Highly dynamic positioning system without internal control air consumption Integrated diagnostic functions for valve monitoring Ensuring failure of the electrical or pneumatic power supply Profibus DPV1 or DeviceNet Field bus communication (optional)