16 September, 2019

Webtec set to expand portfolio with VFD120-E

17 August, 2018

Webtec, a specialist manufacturer of hydraulic measurement and control products, is introducing its new VFD120-E electric-operated variable-priority flow divider. Designed particularly for use on mobile machinery , it allows the speed of hydraulic motors on trailed agricultural attachments and on mining and construction machinery to be controlled remotely . The 420 bar rated VFD120-E offers greater levels of efficiency than previous generation products when it is launched in the third quarter of 2018.

As a three-port pressure-compensated variable-priority flow divider with an electric drive motor, the VFD120-E can provide constant flow to a primary system while still powering a secondary system. To explain in more detail, priority-type flow dividers split a single input flow into a ‘priority’ (regulated) flow and a ‘bypass’ (excess) flow that can be returned directly to the oil reservoir or used to power a second system.

This capability is possible thanks to the valve’s adaptive pressure compensation characteristics, meaning both the priority and by pass flows can be used to drive separate circuits, even under fluctuating loads. In many instances, this functionality eliminates the need for another pump to operate a second system.

Developed for mobile applications, the new VFD120-E can be used to control hydraulic motor and cylinder speeds by applying voltage to the valve, which in turn controls the flow rate. Importantly, Webtec has ensured that the design of the VFD120-E has been optimised to minimise pressure losses across the valve, substantially reducing the energy wasted in the form of heat.


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