ABNOX Metering Valves provide the means for precise metering using the latest developments in Pressure Control Technology.
Skilful design of the Metering Valves guarantees the achievement: - the right amount, in the right place, at the right time. Greases of class NLGI 0 to 3 can be handled: with a maximum apparent viscosity of 5000 mPa.s. The Metering Valves can also be used with oils. This covers the majority of all applications. ABNOX Metering Valves can operate at any angle. The dosage chamber inlet and outlet are alternatively shut and opened by means of a pin valve with pneumatic control. The dosage chamber volume is continuously adjustable by a screw adjustment. The medium is ejected by means of the feeder pump pressure. The use of modern sealing components and glydrings ensures long lifetime of the metering valve even at high input pressures up to 200 bar and even when used with grease containing solid particles. A range of valves reaching from sizes 0.005 cm³ up to 500 cm³ allows to meet most requirements in lubrication technique in an economic way.
Metering Valve with Sensor H (control at hydraulic part)
The position sensor H detects the motion (the end position) of the metering piston and, consequently, the ejection of the lubricant. Its output signal confirms the completion of the lubricant transfer. A missing signal indicates lack of lubricant flow, or other failure. This dosage sensor signal allows for a simple process monitoring. The rugged design ensures a high lifetime. The sensor is well protected against magnetic stray fields, its sensitivity against magnetic interference is very low. The sensor H includes protection circuitry against voltage surges and wrong polarity supply voltage, it proves to be very suitable for rough environment.
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Metering Valve with Sensor P (control at pneumatic part)
Metering valve with proximity switch (Sensor P), a proximity switch on the pneumatic control cylinder, and a magnetic ring attached to the pneumatic piston make up the control device to monitor the function of the control pin of the metering valve. By detection of the pneumatic piston position (starting position), the location of the control pin and the opened or closed state of the metering valve are determined.
