D-tec® valve line
D-tec® divert valves are used for divert functions in processing plants. The valves are an ideal fit for UltraClean applications but can also be operated aseptically.
Housing
The height of the dead-space-free housing exactly corresponds to the diameter of the connection pipeline and therewith avoids domes and sumps. Numerous housing combinations are available with either clamped or welded seats.
Internal assembly
The hermetically sealing D-tec® stem diaphragm is the key element of a D-tec® valve. It is characterized by a very long service life, high dimensional stability with temperature resilience and cleanability. D-tec® shut-off valves can be equipped with a soft-sealing (i.e. EPDM) or a hard-sealing (TEFASEP® gold) valve seat seal.
Actuator
The actuator size, which is chosen based on process and installation requirements, contributes to low air and energy consumption. Depending on the valve operation, various actuator options are available and the valve can be ideally adapted to customer requirements. The actuator includes an interface to mount a T.VIS® control top onto the valve and the internal air supply reduces the risk of failures with external hoses.
Lantern
The lantern connects actuator and product-wetted parts and simultaneously prevents the system from heat transfer between these two valve sections. The lantern has an important supporting and clamping function for the D-tec® stem diaphragm and is furthermore designed for a safe and easy visual detection of leakages.
Control and feedback system
D-tec® divert valves can be equipped with T.VIS® control tops M-15 and A-15. They enable seamless integration of the valves into an automated processing plant.
Item | Size |
Nominal pressure valve | 6 bar |
Closing pressure | 5 bar |
Control air pressure | 6 bar |
Hermetic sealing element | D-tec® diaphragm |
Valve seat seal material | EPDM |
Surface quality in product area | Ra ≤ 0.8 |
Material quality in product area | AISI 316L |
Max. operating temperature | + 135 °C |
Max. sterilization temperature | + 150° for 30 min |
Item | Size |
Nominal pressure valve | 6 bar |
Closing pressure | 5 bar |
Control air pressure | 6 bar |
Hermetic sealing element | D-tec® diaphragm |
Valve seat seal material | TEFASEP® gold |
Surface quality in product area | Ra ≤ 0.8 |
Material quality in product area | AISI 316L |
Max. operating temperature | + 150 °C |
Max. sterilization temperature | + 160° for 30 min |
Shut-off Valve D-tec® N/DV – hard-sealing with TEFASEP® gold
Thanks to the hermetically sealing stem diaphragm D-tec® valves contribute to higher product quality and longer product shelf-life as often demanded with UltraClean applications. The innovative connection between valve stem and stem diaphragm minimizes mechanical stress of the diaphragm during switching operations. The D-tec® stem diaphragm sets standards for the service life at proven temperature resilience and cleanability.
The D-tec® valve line is based on the VARIVENT® valve line and offers many advantages because of this – e.g. a high level of flexibility in terms of valve configuration. The result: Economic efficiency for the system operator and optimized stock handling due to reduced diversity of parts at proven quality.
All of our D-tec® valves can be equipped with T.VIS® control tops. They integrate and combine our valves into the automated process plant.
UltraClean applications
The most relevant product parameter for UltraClean applications is shelf-life. It is mostly determined by the pH-value and the aw-value of the product. In addition, sensory properties need to be considered as well as the logistical chain of distribution. One of the advantages of UltraClean processing is the reduced quantity of preservatives needed for maintaining the shelf-life of the product.
Valve type | Metric | Inch OD |
Shut-off Valves D-tec® N/DV | DN 25 – DN 100 | 1" – 4" |
Divert Valves D-tec® W/DV | DN 25 – DN 100 | 1" – 4" |
Control Valves D-tec® P/DV | DN 40 – DN 100 | 1.5" – 4" |
Tank Bottom Valves D-tec® N/DV | DN 25 – DN 100 | 1" – 4" |
Double-chamber Valves D-tec® D/DV | DN 40 – DN 100 | 1.5" – 4" |
Shut-off valves of the D-tec® valve line are characterized by their hermetically sealing stem diaphragm.
Control valves of the D-tec® valve line are characterized by their hermetically sealing stem diaphragm.
Tank bottom valves of the D-tec® valve line are characterized by their hermetically sealing stem diaphragm.
Double-chamber valves of the D-tec® valve line are characterized by their hermetically sealing stem diaphragm design. The valve type D/DV includes one sterile barrier (ISB).
What if your favorite chocolate didn’t require cocoa beans and your coffee was locally produced? As climate disruption, price hikes and ethical concerns hit two of our most beloved indulgences, scientists are reimagining how we produce them – using microbes, not monocultures. The goal: preserve the flavor and properties of coffee and chocolate while minimizing carbon emissions and improving food resilience.
Ports now compete not just on logistics, but on sustainability. At Greece’s Piraeus port, an advanced processing and recovery facility recycles ship waste oil into fuel. Equipped with GEA’s high-performance centrifuges, it sets a new benchmark for state-of-the-art, environmentally responsible port operations.
The 2022 CO2 shortage forced breweries to review their dependency on global supply chains. Many were forced to close, unable to carbonate their products. At its breweries in Germany, OeTTINGER GETRÄNKE is turning its own CO2 into a powerful lever for independence and sustainability – with the help of CO2 recovery technology from GEA.