Tri State Hydraulics

Mining Products

Efficient and reliable High Pressure pumping systems 
for the coal mining industry

Trimax S200-300

Understanding the diverse nature of global mining markets and anticipating the requirements of high-profile coal producers has been crucial to RMI’s continued success. Our versatile modular approach enables us to design and manufacture systems to customers’ exacting specifications. Systems are supplied in many configurations including track, rail or skid mounted.


pdfDownload S200 Product Leaflet

pdfDownload S300 Product Leaflet


Quinmax S500

The S500 is the latest addition to the ‘S’ range. The five-plunger design exerts lower forces on the crankshaft and associated bearings, while reduced hydraulic noise and pressure pulses minimise the impact of surges on other critical items of equipment, increasing their life expectancy.


pdfDownload S500 Product Leaflet


The minimum specification is: full programmable control of system parameters; full health monitoring with a diagnostic fault log; and auto start and rotation of lead pump. Full-colour LCD graphical display in multi languages can be supplied.

Supply Tanks and Filtration

A complete range of supply tanks is available including an auto-mixing tank with combined storage of automatically mixed emulsion and pre-mixed raw oil. All RMI fluid storage tanks always include a high-flow capacity duplex ‘in-tank’ return filter. Either filter element can be replaced without interrupting the pumped fluid supply.

Protection Devices

All mining system pumps are fitted with the RMI Electronic Unloading Valve which instantly reduces the system pressure when demand from the system changes. The pumps are fitted with oil temperature, pressure and level sensors and alarms to easily enable preventative maintenance.

pdfDownload Auxiliary Components Leaflet

WATER HYDRAULICS RMI Pressure Systems Mining Mining Products