Redesigned KV-6/2-16 Diverter Valve Enhances The Performance Of Vermeer Directional Drills
When OEMs undertake machine redesign to enhance its performance, directional valves are seldom top of mind. Vermeer took a different approach when they designed their new generation D range of directional drills. They partnered with Poclain to work on the project and set three primary objectives: increase efficiency, reduce weight and integrate additional safety features.
Cast body valve makeover for an optimal efficiency-to-weight ratio
Poclains’ diverter valves (known also as selector valves) enable to direct the flow to either the drilling tools or the tracks to move the machine to another location. Branded KV-6/2 size 16 (flow range up to 300 l/min, 79.25 GPM), they were originally machined from a block. The new lighter version now has a cast housing, which reduces its weight by 55%.
With Poclain's extensive expertise in high torque hydraulics, the design of the cast body is optimal inside and out, providing a pressure drop of less than 0,5 bar (7.3 PSI) at a flow of 114 l/min (30 GPM). Despite its optimized lightweight structure, it can bear a maximum pressure of 500 bar (7,250 PSI) depending on the load cycle.
Locked-in shift position
Vermeer also requested that the valve remain 100% shifted in work and transit modes to prevent the machine from moving when the drill is in operation. The new KV-6/2-25 integrates a detent mechanism that holds the valve spool in position without a pilot signal. For extra assurance, the valve includes a spool position sensor that is connected to the on-board controller to ensure that the driving and drilling functions cannot operate at the same time.
Designed with the OEM’s drilling needs in mind, the new KV-6/2-25 diverter valve is lighter, more efficient and helps build reliable machines. It is ideal for applications requiring a high performance-over-weight ratio at a competitive price.
Introducing Poclain’s KV-6/2-25 valves
Featuring high flow and low pressure drop, the new KV-6/2-25 series diverts the flow between the tools and the ground drive.
It targets single-pump mobile applications such as horizontal directional drills, vertical drilling machines, crushers, recycling shredders, and road-rail excavators.
They are designed for hydraulic control and are available with a different port types, position monitoring, and an override option.