TPI September 2020

Products & developments

Products & developments

Performance leap for gas non-return valves Witt Gas has presented a completely new generation of gas non-return valves. The German manufacturer has named its new series ‘Ultra’ as it aims to set a new standard with improved performance. “We believe we offer users the best valve currently available,” said Witt sales manager Andrew Smart. “This enables customers to build state-of- the-art equipment and strengthen their position in the market.” less stress on the valve and therefore longer service life and the pressure drop is minimal due to the very low opening pressure of approximately 4 mbar.

The valve is flashback-arresting when burning methane up to 2 bar in air, in accordance with DIN EN ISO 5175-1 and -2. This means that the non-return valve can be used without a separate flashback arrestor. One fitting instead of two is therefore sufficient, and the pressure drop is lower. The benefits are lower costs and a more compact design. Thermal processing applications of this kind are described in ISO 13577-2 and DIN EN 746-2. The valves are cleaned for use with oxygen in accordance with EIGA guidelines. The elastomers used have been declared by BAM (German Federal Institute for Materials Research and Testing) as suitable for use in plant components for oxygen (BG RCI data sheet M 034-1). Mr Smart added: “The Ultra series is more than evolution. Compact designs are demanded by the market, and the Ultra is our answer.” Witt Gas www.wittgas.com

The Witt engineers have completely redesigned the non-return valve with an improved valve system with fully optimised gas flows, which allows more flow for the same size. According to the company, the Ultra valve is now smaller and lighter than others and much quieter. In addition to lower noise emissions, this also means

The compact high-performance valve now enables plant engineers to build smaller and more efficient systems. And cost advantages can be achieved in pipeline construction thanks to smaller nominal diameters. Witt’s new development offers: small size, low weight, high flow rate, low- pressure drop and quiet operation.

The new Witt gas non-return valve

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TUBE PRODUCTS INTERNATIONAL September 2020

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