At DOMS Incorporated., we have provided customers with hydraulic filtration solutions for over 60 years. With our extensive experience and excellent customer service, you can count on us to provide reliable solutions for your needs.

We are committed to helping our customers get the best performance from their equipment with superior quality products that stand up under tough working conditions. Let us help you find the right solution for your application.


Our hydraulic filters are used in the construction industry to keep hydraulic Hydraulic filters for a construction sitesystems clean, functioning properly, and debris-free. Hydraulics are crucial to many industrial machines, including bulldozers and excavators

Without these filters, the equipment could be subject to damage or premature breakdown due to dirt and other contaminants entering the system. Many heavy-duty applications have stringent filtration requirements, making them several times more effective than conventional air or fuel filters.

Earth Moving

Hydraulic filters are essential components of earth-moving machines. They ensure that the hydraulic fluid is clean and free from dirt, which helps to protect the machine’s hydraulic system from damage caused by contaminants. 

Hydraulic filters are designed to remove particles to a specific size range, trapping them in the filter media while allowing clean fluid to pass through.  Depending on the application, hydraulic filters can be designed with different media types to meet the filtration requirements of specific machines.


Hydraulic filters work by trapping particles that may be suspended in the oil, preventing them from entering the system. As a result, machines can run more efficiently and with less wear on components. The type of filter used will depend on the size and complexity of the machine, but all types provide some degree of protection to your equipment’s vital parts.


Hydraulic filters are typically located between the hydraulic pump and reservoir and come in various sizes, shapes, and styles to fit your needs. These filters help reduce pressure drop and contamination levels of oil or other fluid used in the system. 

The most common types of hydraulic filters used in foundries include: 

Plant Equipment (punch presses, lathes, hydraulic power units, plastic injection molding machines, etc.)

Utilizing high-efficiency hydraulic filters can reduce wear on hydraulic components, prevent malfunctions due to clogged or blocked parts, and minimize downtime due to preventive maintenance. They come in various types, each designed for different applications based on the equipment’s needs. 

One type is the suction filter which removes particles in the fluid upstream before they reach vulnerable components like pumps or motors. This helps protect these parts from wear and tear caused by contaminants entering them. Suction strainers ensure flow rate remains consistent throughout the system, as any restrictions will result in reduced performance.  


Hydraulic filters clean oil in the equipment for any mining operation and remove water vapor to maintain proper lubrication for moving parts such as:

  • Pumps
  • Cylinders
  • Motors
  • Valves

Not only do these filters help increase the life of the machinery, but they also minimize downtime due to maintenance or repairs. 

Nuclear Power (feedwater pumps for nuclear plants)

Hydraulic filters are essential components in nuclear power plants to ensure the safe and efficient operation of feedwater pumps. Feedwater pumps bring water into the reactor core, cool it down, then circulate it continuously. Hydraulic filters help prevent costly damages due to contamination or foreign particles entering through the pump’s inlet.

Railroad Equipment

Hydraulic filters are used in railroad equipment such as locomotive wagons and cranes so that the hydraulic systems function efficiently. They protect components from wear and tear by trapping dirt particles, metal shavings, and other contaminants before they reach the machine’s fluid. These filters are necessary for the system to be protected due to accumulation of these unwanted materials. 

Aircraft Ground Support Equipment

Hydraulic filters include a filter element that traps particles and other contaminants to ensure clean hydraulic fluid flows throughout the GSE’s hydraulic system. This ensures that any impurit

ies are blocked before they can enter the system and cause damage or interfere with the performance.

Hydraulic filtration for air traffic

  • systems clean, functioning properly, and debris-free. Hydraulics are crucial to many industrial machines, including bulldozers and excavators.

DOMS Incorporated is the leading hydraulic filter manufacturer for different industries

DOMS Incorporated has built its reputation as a leading hydraulic filter manufacturer through care and dedication to quality. Our products are designed to meet the highest industry standards, giving our customers assurance in the functionality of their machines and processes.  Contact us today to discuss how we can help you with your hydraulic filtration needs!