Main Components
Housing
Housings for VESTA® shut-off valves are available with two, three or four connection ports and can be executed with either one or two housing sections.
Housings for type HCA graduated valves are available in centric and eccentric executions. The eccentric option offers the full drainage of the transit pipeline in horizontal installations via the extraction port.
Internal Assembly
Internal assemblies for VESTA® sterile valves consist of bellow, pressure disc, o-ring and circlip. The internal assembly is screwed onto the valve stem of the actuator and is replaced as a unit if required. PTFE bellows for shut-off valves up to DN 25, OD1" and ISO 33,7 include a tapered tip. All other valve dimensions have a regular flat seat area.
Actuator
The actuator can be executed pneumatically or manually. The manual version is made of plastic in all cases. Pneumatic actuators are available in plastic or stainless steel, and the fail-safe (normally close or normally open) position can be easily reversed.
Control and feedback systems
Pneumatic actuators include a visual valve status indicator by default. Alternatively, visual indicators can be replaced by an open feedback unit or by using the adequate adaptor plate with a T.VIS® control and feedback system in various executions.
Technical data of the standard execution
| Item | Size |
| Nominal pressure valve | 10 bar |
| Control air pressure | Actuator NC – min. 5 bar, max. 10 bar
Actuator NO – min. 5 bar, max. 6 bar |
| Hermetic sealing element | PTFE bellow |
| Surface quality in product area | Ra ≤ 0.8 |
| Material quality in product area | 1.4435/316L |
| Max. operating temperature | 135 °C (275 °F) |
| Max. sterilization temperature | 150 °C (302 °F) for 60 min |
VESTA® valve line
VESTA® Sterile Valves
Shut-off valve VESTA® H_A – valve distribution bulkhead connection
Thanks to the hermetic sealing of the valve stem with a PTFE bellows, VESTA® sterile valves provide a maximum level of process line isolation and therewith contribute to customers’ product and process safety.
The VESTA® valve series is specifically designed to meet the highest requirements for sterile processes in the pharmaceutical, biotech and cosmetics industry. The valve program provides everything that is required to ideally serve these industries. The high-quality valve range consists of different valve types, and thanks to the modular build-up, the valves can also be tailor-made for specific process conditions and still meet all requirements from a regulatory point of view.
VESTA® valves can be seamlessly integrated into an automated process plant by using the T.VIS® control tops.
PTFE bellows as key element
VESTA® - PTFE bellows
Key element of VESTA® sterile valves is a single-piece PTFE bellows made of the material TFM 1705. Adding to its excellent chemical resistance against almost all media, TFM 1705 also complies with all standards relevant for the pharmaceutical industry, such as e.g. FDA 21 CFR 177.1550 and USP class VI. The high-value surface finish (Ra ≤ 0,8 μm), the seamless and hermetic sealing as well as the CIP/SIP optimized design are other characteristic features. The patented bellows sealing system safely separates the product-wetted area from the atmosphere in all process steps and furthermore seals the valve seat.
VESTA® at a Glance
- Optimized flow and dead-space-free design
- Optimized CIP/SIP cleanability
- Hermetic sealing of the product-wetted area by PTFE bellows
- Defined sealing pre-load by metallic stop
- Valve in accordance with EHEDG design guidelines
- Self-locking groove nut connection
- Safe and easy maintenance
Overview *
| Valve type | Metric | Inch OD | ISO |
| Shut-off valves | DN 10 – DN100 | 0.5” – 4” | ISO 13.5 – ISO114.3 |
| Shut-off valves graduated | DN 10 – DN100 | 0.5” – 4” | ISO 13.5 – ISO114.3 |
| Tank-bottom valves | DN 10 – DN100 | 0.5” – 4” | ISO 13.5 – ISO114.3 |
| Valve blocks | DN 10 – DN100 | 0.5” – 4” | ISO 13.5 – ISO114.3 |
| Sampling valves | DN 10 – DN 15 | 0.5” – 0.75” | ISO 13.5 – ISO 17.2 |
| * Additional valve sizes available upon request | |||
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