D-tec® valve series
D-tec® control valves are used for the exact setting and control of parameters such as flow, pressure, temperature, or filling level in processing plants.
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 based on a clamped seat ring design are available.
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 and high dimensional stability with temperature resilience and cleanability. The valve seat can be executed wih a metallic stop, with a soft-sealing (i.e. EPDM) or a hard-sealing (TEFASEP® gold) valve seat seal. D-tec® Control valves provide equal-percentage control cone characteristics and different Kvs values are available for each valve size.
Actuator
The actuator size, which is chosen based on process and installation requirements, contributes to low air and energy consumption. Depending on the valve task, various actuator options are available and the valve can be ideally adapted to customer requirements. The actuator contains an integrated interface for mounting a T.VIS® position controller by default and the internal air supply reduces the risk of failure with external hoses.
Lantern
The lantern connects actuator and product 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.
Position Controller
D-tec® control valves are equipped with T.VIS® P-15 position controllers by default. 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® stem 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 (275 °F) |
Max. sterilization temperature | 150 °C (302 °F) for 30 min |
Item | Size |
Nominal pressure valve | 6 bar |
Closing pressure | 5 bar |
Control air pressure | 6 bar |
Hermetic sealing element | D-tec® stem 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 (302 °F) |
Max. sterilization temperature | 160 °C (320 °F) for 30 min |
Item | Size |
Nominal pressure valve | 6 bar |
Closing pressure | 5 bar |
Control air pressure | 6 bar |
Hermetic sealing element | D-tec® stem diaphragm |
Valve seat seal material | Metallic stop |
Surface quality in product area | Ra≤ 0.8 |
Material quality in product area | AISI 316L |
Max. operating temperature | 150 °C (302 °F) |
Max. sterilization temperature | 160 °C (320 °F) 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.
Divert 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).
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