Valve Block VESTA® HWA – stainless steel actuators
VESTA® valve blocks offer optimized piping by simultaneously reducing dead spaces. The significantly reduced pipe volume and the improved drainability are other characteristic features. In contrast to concepts with individual valves, solutions with VESTA® valve blocks reduce the required quantity of fittings and therefore also contribute to economical installation concepts.
Main Components
Housing
VESTA® valve blocks are available with three (type HWA) or four (type HXA) connection ports by default. With the type HXA the intermediate chamber is executed for media transfer. The single-piece housing includes three sections and is produced from one solid piece. Further housing configurations are available upon request.
Internal Assembly
The PTFE bellows are identical with those for VESTA® shut-off valves. Bellows up to DN25, OD 1" and ISO 33,7 include a tapered tip. All other valve dimensions include a regular flat seat area.
Actuator
Both actuators 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. Differential configurations of the two actuators are possible.
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 bellows |
| Surface quality in product area | Ra ≤ 0.8 |
| Material quality in product area | 1.4435/316L |
| Max. operating temperature | + 135 °C |
| Max. sterilization temperature | + 150° 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 line 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 | |||
Related Products
Sampling Valves VESTA® H_A_I
Sampling valves of the VESTA® valve line are characterized by their PTFE bellow design and their modular structure.
Shut-off Valves VESTA® H_A
Shut-off valves of the VESTA® valve line are characterized by their hermetically sealing PTFE bellow design.
Tank Bottom Valves VESTA® H_A/T
Shut-off tank bottom valves of the VESTA® valve line are characterized by their hermetically sealing PTFE bellow design.
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Fast and efficient cleaning of VESTA bellow
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