With a size range from DN 10 - 65 (DIN), ½" - 2 ½ " (OD), and 42,4x2 - 76,1x2 (ISO), VESTA® valves are the smallest of their kind - larger sizes on request.
They allow the development of innovative distribution systems that conform with known process technology standards and can handle the different media necessary for operation, cleaning and sterilisation. These valves are of the highest manufacturing standard under strict safety control.
Instead the use of a membrane sealing is achieved through hermetically sealed PTFE bellows which are pocket free, avoiding the retention of process product and allowing effective sterilisation. Their design also allows the orientated vertically or horizontally for easy fitting in confined spaces.
Unlike other valve types, seat valves possess a natural draining action.
Being on a level with the piping, the body's inside contour and the natural gradient between the body levels combine to ensure that the valve body drains completely.
Seat valves feature no barriers that could obstruct the drainage of residual fluid, allowing it to accumulate and form a breeding ground for microorganisms. Inside surfaces all feature wide-radius geometry to assist fluid drainage.
The VESTA® sterile valve is designed with a self-draining shape. The unit's design with its right-angled connector arrangement and the body portion between the pipe levels ensures easy, foolproof alignment when fitting.
The heart of the VESTA® sterile valve is the PTFE bellows made of TFM 1705. Apart from its outstanding chemical resistance to almost all types of media TFM 1705 is approved in accordance with the Code of Federal Regulations Title 21 § 177.1550 “Perfluorcarbon resins“ of the Food and Drug Administration (FDA).
The high-quality surface (Ra ≤ 0.8 μm / Rz ≤ 32 μm); the gap-free hermetic seal; and the special design for optimum CIP/SIP cleaning are the characteristic features. The patented bellows sealing system ensures that the valve interior is permanently and hermetically sealed off against the atmosphere even during critical phases of the process.