Space is always at a premium for underground mining equipment, such as this remote-controlled continuous miner. Therefore, Webtec’s compact CV120 combination motor-control valve should prove useful not only in mining equipment, but in any mobile hydraulic equipment where compact design and simple installation are important.
The new valve is based on the design and components from the company’s established VFD120 series. This result is consistent flow output independent of load pressure. The directional control element uses a hardened alloy-steel spool that can be supplied in double-acting or motor types, with three-position spring-centered or detent control. Another useful feature is a full-flow, pilot-operated relief valve to protect both the A and B regulated ports.
The valve has two pump inlets and two tank outlets that allow the plumbing to be connected from either the side or top of the valve, thus simplifying installation. Multiple valves can be used in series by using a high-pressure carry-over (HPCO) coupling and standard fittings. If a HPCO coupling is installed for supplying downstream valves, a second pressure relief valve is required to control the pressure exiting the HPCO. In such instances, the two relief valves work independently of each other.
