VESTA® valve line
Tank Bottom Valves VESTA® H_A/T
VESTA® tank bottom valves are used for the controlled shut-off of liquid media at vessels. The positioning primarily takes place at the lowest point of a vessel, although the valve is also fully drainable when installed horizontally.
The valve is characterized by its flush-mounted design, eliminating the possibility of any sump. The dead-space-free design offers the complete emptying of the vessel and optimum CIP/SIP cleaning. The robust design of the housing (respectively the housing connection flange) enables the seamless integration into processes.
VESTA® tank bottom valves can be furthermore executed with an additional side valve. This option impresses with its compact design and ideal cleanability, which significantly contributes to process optimization. The side valve can be used for CIP/SIP supply as well as for drainage.
Main Components
Housing
Housings for VESTA® tank-bottom valves are available with two or three process connections. The housings are produced from one solid piece of stainless steel. The two options available are one-piece housing and flange combined or housing with loose flange. The loose flange execution consists of two parts which are connected to each other with four screws, and these are safely sealed with an additional o-ring.
VESTA® tank-bottom valves with CIP/SIP side valve: The valve seat of the side valve is directly integrated into the side wall of the tank-bottom housing. Therefore, the additional lateral entry can be sealed free of dead space.
Internal Assembly
PTFE bellows for VESTA® tank-bottom valves are executed with a flat seat area for all valve sizes. They distinguish themselves from other VESTA® valve types by their extended cone at the seat area.
VESTA® tank-bottom valves with CIP/SIP side valve: The PTFE bellow for the side valve is always executed with a flat seat area, and due to the housing depth the seat area has an extended cone. In total, the bellow is therefore slightly longer than bellows for VESTA® shut-off valves and valve blocks.
Actuator
The actuator(s) 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 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 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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