HQ Series flat face couplings are designed for use in excavator hammer circuits and other applications involving high pressure pulses. Construction plant, mobile equipment, general industrial, nuclear, mining and agricultural.

H Series couplings are suitable for similar applications to those listed above provided the duty cycle is less demanding and the environment less aggressive. Both HQ and H Series couplings are suitable for applications involving dusty or dirty environments and where oil loss on disconnection cannot be tolerated.