High Vacuum micro-metering Valves (Vacuum Needle Valve): Overview, Features & Main Performance Indicators

The High Vacuum micro-metering Valve (also known as Vacuum Needle Valve) adjusts the gap length between the conical needle and the hole through screw drive to change the conductance value of the valve seat. It is used to inflate the vacuum system and accurately adjust the intake flow rate to control and regulate the vacuum degree in the system. The applicable working media of the High Vacuum micro-metering Valve are dust-free air and non-corrosive gases.

Product Features

• Standardized and modular design, easy to replace and maintain;

• Easy-to-clean design;

• The solenoid valve adopts an energy-saving design with small volume.

Main Performance Indicators

• Applicable Range (Pa): 10⁵～1.3×10⁻⁵Pa

• Valve Leak Rate (Pa·L/S): ≤1.3×10⁻⁵Pa

• Opening and Closing Time (S): 20 for DN≤63; 30 for 80≤DN≤200; 48 for DN≥250

• Medium Temperature (℃): -25～+80 (Sealing Material: NBR Rubber); -30～+150 (Sealing Material: Fluororubber)

• Flange Standard: JB919

• Installation Position: The upper port of the valve plate sealing surface is connected to the pump air inlet