GEMÜ Tugela Double-Eccentric Butterfly Valve Meets Stricter Temperature and Pressure Requirements

12.02.2021
GEMÜ, the valve specialist, offers a wafer version of the GEMÜ R470 Tugela series in nominal sizes of DN 50 to DN 600 with immediate effect.
GEMÜ Tugela Double-Eccentric Butterfly Valve Meets Stricter Temperature and Pressure Requirements

GEMÜ R471 Tugela butterfly valve with automation components. (Image source: GEMÜ Gebr. Müller Apparatebau GmbH & Co. KG)

The GEMÜ Tugela butterfly valve is particularly distinguished by its double-eccentric construction, which is why it is also designated as a high-performance butterfly valve and suitable for pressures up to 40 bar or temperatures up to 230 °C. The butterfly disc separates directly from the sealing seat when it opens, which reduces wear and thus increases service life. Thanks to the locking screw on the actuator flange, the gland packing can be retightened directly at the shaft, which sits in a carbon braid bearing, so that the butterfly valve can be serviced when installed. This, in turn, significantly reduces the maintenance requirements.

Double-eccentric design for easy opening and increased service life
When constructing butterfly valves, a distinction is made between three main designs.

In a concentric design, such as the GEMÜ Victoria series, the pivot point is in the centre of the seat valve, i.e. the main seal is interrupted by the shaft.

In a simple eccentric construction, the main seal is offset to the shaft axis. There is no interruption over the entire 360° sealing circumference with this design.

In a double-eccentric design, the shaft axis is additionally, as the second eccentricity, moved out of the piping axis so that the shaft centre is slightly offset from the piping centre.

Further features of the GEMÜ R470 Tugela butterfly valve are the shaft blow-out protection as an additional safety measure in case the shaft breaks and the improved sealing due to an optimized disc design in spherical form. The GEMÜ R470 Tugela also has an antistatic spring for use in ATEX areas and a TFM seat ring which is particularly low-brittle and ensures reliable use in a wide temperature range.

More articles on this topic

New GEMÜ App Offers a Wide Range of Digital Services

11.08.2022 -

With the new GEMÜ app for smartphones and tablets, products can be clearly identified, operated intuitively and product information can be called up conveniently. Furthermore, the entire GEMÜ product range is now also accessible from your trouser pocket. The GEMÜ app offers numerous functions that make life easier in the world of GEMÜ valves, measurement and control systems.

Read more

GEMÜ Expands its Company Management Team

06.07.2022 -

GEMÜ Gebrüder Müller Apparatebau GmbH & Co. KG is reorganizing its company management team. Graduate industrial engineer Matthias Fick will be appointed as Managing Director of Global Operations within GEMÜ Germany’s company management team on 1st July 2022. This appointment will further strengthen the company management team, comprising Gert Müller, Managing Partner, and Stephan Müller, Managing Director.

Read more

New GEMÜ CleanStar High-Purity Diaphragm Valve is Setting Standards

08.06.2022 -

For many years, the semiconductor industry has been successfully using diaphragm valves from the GEMÜ CleanStar series all over the world. GEMÜ customers appreciate the advantages of the design and the multitude of possible applications due to the sophisticated graduation of actuator sizes 1 to 3. Now, the valve specialist is expanding its GEMÜ CleanStar family with actuator size 4, and thus setting standards in terms of footprint and flow.

Read more

RFID Solutions for GEMÜ Diaphragms

04.04.2022 -

The new TIP 2.0 is an optimized design for enabling communication with diaphragms as part of Industry 4.0 interconnectivity. Using RFID chips in conjunction with CONEXO, diaphragms can be positively identified and relevant data can be read out.

Read more