Low-dead-space fittings and pressure gauges: hygiene, safety and efficiency in the food industry
In the food industry, the hygienic design of plant components plays a key role. A particularly important term in this context is «low dead space». It describes the design characteristics of components such as valves, pressure gauges and process connections. Low-dead-space fittings are designed in such a way that, as far as possible, no product residues, liquids or microorganisms can remain in hard-to-reach cavities or connection pieces.
A dead space arises wherever the medium does not flow through sufficiently during normal operation, cleaning or draining and can become trapped. Such areas can be found, for example, in connection pieces, seals, measuring ports or housing transitions.
This is problematic in the food industry because product deposits, germs or biofilms can form there. These residues significantly increase the risk of contamination, loss of quality and hygiene issues.
Valves with minimal dead space are therefore designed so that flow paths are as smooth, short and free of unnecessary recesses or cavities as possible. This prevents product build-up, facilitates thorough cleaning and supports cleaning processes such as CIP (Cleaning in Place) and SIP (Sterilisation in Place).
Particularly in the food industry, where the highest standards of hygiene, product protection and traceability apply, minimal or zero dead space is not merely a convenience feature, but an essential design and quality criterion.
The advantages of components with minimal dead space:
- Improved cleanability
- Enhanced product safety
- Reduced risk of microbial contamination
- Compliance with statutory and regulatory hygiene requirements
- Reduced downtime and cleaning effort
- Improved operational efficiency of a plant
The three most common reasons why a company chooses low-dead-space fittings:
Three applications, three solutions with low-dead-space valves:
Three applications, three solutions: fittings with minimal or no dead space reduce risk, enhance control and ensure stable processes in the right place. When planning, installation and operation work in tandem, teams operate more reliably and calmly under pressure in their day-to-day work – even with frequent changes and tight deadlines.
The illustration shows a valve with minimal dead space. All components are designed so that, when assembled, no cavities remain in which a fluid can accumulate. When correctly installed, the system can be completely drained and cleaned.
Stainless steel ball valves with dead-space-minimised designs and integrated seals, known as integral seals, form part of our product range. The integrated seals completely enclose the ball. This effectively prevents backflushing of the ball and the accumulation of deposits between the body and the ball. In the illustration above, the integrated seal is number 5 in the drawing.
Pressure measuring instruments with low-dead-space designs are also part of our product range. We offer pressure gauges and pressure transmitters – also known as pressure sensors – with process connections or pressure transmitters that prevent deposits and residues. In the case of pressure gauges or sensors, the medium can flow into the measuring element and become trapped there. In particular, the process-contacting connections must be designed in such a way that the product flows freely around the measuring point and no residues can become trapped in the connection area.
FAQs
«Low dead space» or «dead space-free» describes a design with no areas where a fluid can become trapped. Cleaning can reach all surfaces of the component. This reduces the risk of bacterial growth, product residues or product deposits. The geometry and installation position of the component, as well as suitable seals during operation, are crucial.
A dead-space-free valve is designed so that a medium flows through it completely, with no dead spaces and no residues remaining. Smooth transitions, suitable seals and a correct installation position ensure reliable cleaning in systems with high hygiene requirements, such as in the food sector.
Dead-space-free or low-dead-space valves are necessary wherever residues, germs or contamination are critical, with viscous media and particles, or when complete drainage is required. They are therefore the right choice for sensitive foodstuffs, aseptic processes, frequent product changes in the food industry, or validated cleaning procedures such as CIP (Cleaning in Place) and SIP (Sterilisation in Place).
We would be happy to advise you
Take advantage of our low-dead-space fittings and pressure gauges. Contact us for a comprehensive consultation.
+41 41 780 22 22
info@tri-matic.ch
An overview of valves, pressure transmitters and pressure sensors designed with minimal dead volume
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