Welcome To Hogg NH3 Systems

James Hogg have been manufacturing Ammonia Crackers and Vaporisers for over 50 years.


To supply continuous flow of ammonia gaseous to various processes when the liquid ammonia is supplied in storage tanks or vessels.


To split ammonia into nitrogen and hydrogen in order to create a dissociated ammonia atmosphere, often used in heat treatment and other metal finishing processes.

Formed in 1919 James Hogg has built a long track record and renowned reputation for the above ammonia systems which were originally developed in conjunction with ICI. In addition to new units James Hogg provides a comprehensive spares service. We also supply new catalyst for the crackers and can refurbish, pressure test and re-fill catalyst containers.