Pumps
Our range of oil-free Janus axial piston pumps offer excellent performance in a light & compact design, compared to their volumetric displacement. In a large variety of different displacement options (including variable) & material builds, there is a pump for every application.
Each pump includes up to nine pistons, which significantly reduces pressure ripples, increases stability, and eliminates the need for accumulators .
We manufacture these pumps primarily from 316 or duplex materials, ensuring excellent corrosion resistance and making them ideal for reverse osmosis applications.
Valves
Our patented range of control valves actively manages pressure, flow, and water direction. Consequently, they control the speed, torque, and force of motors and cylinders. You can choose valves with manual, hydraulic pilot, or electrical activation.
Additionally, we offer inline versions or custom-designed manifolds, which reduce the number of costly fittings and simplify maintenance.
Cylinders
Janus cylinders feature an all-stainless 316 design for durability and corrosion resistance . They come in various standard rod end and mounting types, such as threaded rods, spherical rod ends, rear and front flange mounting.
Built with the tie-rod design widely accepted in the industrial market, these cylinders can also be customized to meet specific requirements. Standard bore sizes range from 32 mm to 150 mm.
Pumps
The Janus range of pumps are based on the axial piston principle which is both light and compact relative to their volumetric displacement, which may be altered in our
variable displacement models. Up to 9 pistons per pump ensure very small pressure ripples removing the need for accumulators.
The need for oil lubrication is eliminated as
all moving parts are water lubricated.
The pumps are manufactured in 316 or duplex materials making them highly resistant to corrosion and ideal for reverse osmosis
applications
Valves
Our patented range of control valves actively manages pressure, flow, and water direction. Consequently, they control the speed, torque, and force of motors and cylinders. You can choose valves with manual, hydraulic pilot, or electrical activation.
Additionally, we offer inline versions or custom-designed manifolds, which reduce the number of costly fittings and simplify maintenance.
Cylinders
Janus cylinders feature an all-stainless 316 design for durability and corrosion resistance . They come in various standard rod end and mounting types, such as threaded rods, spherical rod ends, rear and front flange mounting.
Built with the tie-rod design widely accepted in the industrial market, these cylinders can also be customized to meet specific requirements. Standard bore sizes range from 32 mm to 150 mm.
Motors
Janus axial piston motors are completely oil-free, clean, and safe to use. By incorporating advanced materials and high-velocity sliding surfaces, these motors operate efficiently with water as their sole hydraulic medium, coolant, and lubricant.
This design eliminates any risk of cross-contamination between system fluid and lubricating oil. Each motor minimizes vibration and delivers quiet, high-efficiency performance, resulting in a compact and lightweight product.
Desalination
Our Janus desalination axial piston pumps are totally oil free, clean and completely safe to use. As a result of employing advanced materials, high velocity and loaded sliding surfaces, the range of pumps can operate effectively with seawater as their only coolant/lubricant therefore, this removes the potential for cross contamination of the system fluid or lubricating oil.
Each pump employs technology that minimises vibration and ensures a low noise yet high efficiency operation. The result is an exceptionally small, light-weight product ideally suited for the RO market.
Power Centre
The power centre integrates an axial piston high-pressure desalination pump with an axial piston motor. It uses the pressure in waste brine to assist the electric motor, reducing power consumption to less than 3 kW/m³.
Purpose-built for the RO market, the power centre operates through a splined shaft connection from the electric motor, which drives both the pump and the energy recovery system via a simple mechanical coupling.
Motors
Janus axial piston motors are completely oil-free, clean, and safe to use. By incorporating advanced materials and high-velocity sliding surfaces, these motors operate efficiently with water as their sole hydraulic medium, coolant, and lubricant.
This design eliminates any risk of cross-contamination between system fluid and lubricating oil. Each motor minimizes vibration and delivers quiet, high-efficiency performance, resulting in a compact and lightweight product.
Desalination
Our Janus desalination axial piston pumps are totally oil free, clean and completely safe to use. As a result of employing advanced materials, high velocity and loaded sliding surfaces, the range of pumps can operate effectively with seawater as their only coolant/lubricant therefore, this removes the potential for cross contamination of the system fluid or lubricating oil.
Each pump employs technology that minimises vibration and ensures a low noise yet high efficiency operation. The result is an exceptionally small, light-weight product ideally suited for the RO market.
Power Centre
The power centre integrates an axial piston high-pressure desalination pump with an axial piston motor. It uses the pressure in waste brine to assist the electric motor, reducing power consumption to less than 3 kW/m³.
Purpose-built for the RO market, the power centre operates through a splined shaft connection from the electric motor, which drives both the pump and the energy recovery system via a simple mechanical coupling.
Powerpacks
Our power pack provides a compact and flexible power supply solution. Available in a modular design, it can be easily customized or specially built to meet unique requirements.
We also offer optional accessories such as filters, coolers, and fittings after consultation with our design team. Pumps can be supplied as bare shaft motor-pump assemblies or tank-mounted for complete power pack builds.
Air Motors
Armak has spent years refining a contact-free rotary piston design for geared piston motors. This design offers a versatile range of control and output options to meet diverse user needs.
Its simplicity and compactness ensure long service life with low operating and maintenance costs. The Armak motor range supports a wide variety of applications and can directly replace RM radial piston motors, delivering greater power output.
Powerpacks
Our power pack provides a compact and flexible power supply solution. Available in a modular design, it can be easily customized or specially built to meet unique requirements.
We also offer optional accessories such as filters, coolers, and fittings after consultation with our design team. Pumps can be supplied as bare shaft motor-pump assemblies or tank-mounted for complete power pack builds.
Air Motors
Armak has spent years refining a contact-free rotary piston design for geared piston motors. This design offers a versatile range of control and output options to meet diverse user needs.
Its simplicity and compactness ensure long service life with low operating and maintenance costs. The Armak motor range supports a wide variety of applications and can directly replace RM radial piston motors, delivering greater power output.









