Sumitomo Gear Pump Characteristics of its main features: 3: especially suitable for higher speed occasions. 4; long service life -- good wear resistance and service life. Stable high-voltage operation, low vibration, low noise, quiet, fast response and high precision operation, stable dispatch, low power loss operation, maintenance and operation are very simple. Sumitomo Gear Pump Series: QT22, QT23, QT31, QT32, QT33, QT41, QT42, QT51, QT52, QT61, QT62, QT63 and so on. QTM31-31.5F-2.2-3R-380-S1431-E