We are pleased to introduce our new telescopic extension spindles with break zone in the key adaptor. The break zone prevents damage to the valve and the extension spindle itself if too much torque is applied during operation.
In such events the break nut will break and can easily be replaced. Meanwhile, the extension spindle can still be operated by means of a #20 socket wrench. Please see animation of the function.
The key adaptor consists of two parts – the key adaptor itself and a top spanner – and in between there is a break nut made of ECO BRASS DZR CW724R. All three parts are assembled with a socket head bolt.
The break nut will break at different ranges of torque depending on the valve size. Spare part sets are available consisting of a break nut and a spare socket head bolt that can be mounted by use of an Allen key. For further details, please refer to datasheets and the mounting instruction found via the links below.
- Telescopic extension spindles for gate valves DN40-400, with break zone AVK series 04/F-011
- Telescopic extension spindles for gate valves DN450-600, with break zone AVK series 04/F-017
All our extension spindles are designed for ease of use with features that secure easy mounting and easy length adjustment on site. Please see how in our extension spindle animation. Easy operation of the valves is secured by the bottom covers of the extension spindles which protect the valve stems from impurities and enable them to rotate freely – and by a high, uniform and long-lasting quality of the extension spindles.
Please refer to our insights page where you will find much more information and a detailed overview of our wide range of extension spindles.