For over 60 years, DOMS Incorporated has manufactured high-quality flow diffusers, strainers, and suction filters for a range of diverse OEMs. Our company’s dedication to excellence has allowed us to deliver custom solutions for the specialized needs of our customer base.

DOMS carries an extensive inventory of off-the-shelf products. Learn more about the features and applications of each one here.

The hydraulic pump is the most critical component of a hydraulic system. A suction strainer protects the pump by eliminating the risk of damage caused by contamination. Designed for demanding hydraulic applications, our suction strainers perform consistently and maximize system uptime.

Features

Our suction strainer fits almost any hydraulic system, with capacity ratings between 5 to 200 GPM. The strainer separates larger particles, usually those visible to the naked eye. DOMS carries an extensive range of standard suction strainer sizes that can accommodate from ½- to 4-inch O-ring, male, and female connections.

Industries & Applications

Our high-quality strainers are versatile and engineered to meet demanding operating conditions in industries such as:

  • Agriculture
  • Automotive
  • Construction
  • Forestry
  • Heavy equipment
  • Manufacturing
  • Metallurgy
  • Mining

Visit our suction strainer product page to learn more.

Suction Filters

Suction filters are similar to strainers but use a wire mesh to filter out smaller particles—usually those invisible to the naked eye—and protect the hydraulic pump. Using a suction filter to remove contaminants from process fluids within a hydraulic system prevents damage to sensitive components. The porous filtration medium captures unwanted particulates when the fluid flows through it.

Features

DOMS carries pressure filters, low-pressure filters, and return line filters. Each filter has a crest pleat design and rounded root with end caps that have an original mechanical lock design. The filters have a capacity rating of 5 to 200 GPM with minimal differential loss and the ability to strain particulates as little as 10 microns.

Our complete line of suction filters can accommodate ½-inch to 4-inch customary female, male, and O-ring connections.

Industries & Applications

DOMS Incorporated suction filters are ideal for many demanding applications in a wide variety of industries, including:

  • Agriculture
  • Automotive
  • Construction
  • Forestry
  • Heavy equipment
  • Manufacturing
  • Metallurgy
  • Mining

Learn more about our hydraulic suction filters here.

Air Filters

DOMS Incorporated’s air filters efficiently improve air quality, with different designs available to fit a variety of systems. Our suction air filters can protect air compressors and motors from damage caused by contaminants.

Features

Our robust air filters have a high degree of air permeability to mitigate contaminant buildup and pressure differences. To ensure maximum durability, we construct the air filters from stainless steel mesh or synthetic material. Customers can choose from advanced metal locking end caps or flexible molded end caps. Some filters can be easily taken apart if designed to do so, and all steel filters can be cleaned and reused.

Industries & Applications

Many of the industries we work with rely on heavy-duty machinery. Our suction air filters are frequently used for:

  • Agriculture
  • Construction
  • Forestry
  • Manufacturing
  • Mining
  • Off-road heavy equipment

Visit our suction air filter page to learn more.

Diffusers

DOMS manufactures flow diffusers for a variety of OEMs in an array of industries. Our products meet custom specifications and often exceed the expectations of our customers.

Features

We manufacture diffusers according to client specifications for hardware, connections, dimensions, and other special requirements. Standard dimensions are 2 15/16” D × 4 7/16” H to 5 11/16” D × 12 ¼” H.

The diffusers are compatible with aqueous or non-aqueous hydraulic fluids and regular petroleum-based hydraulic oils. The locking dome end-caps are designed to maintain and withstand high-pressure gallons per minute (GPM). The diffusers can handle temperatures ranging from -60 °F to +250 °F.

Industries & Applications

Many industries and applications utilize our diffusers, including:

  • Aircraft ground support
  • Construction
  • Earth moving
  • Forestry
  • Foundry production
  • In-plant equipment manufacturing
  • Mining
  • Nuclear power
  • Railroad

Here’s more information about our flow diffusers.

Spin-On Filters

Without adequate filtration, hydraulic systems can decrease in efficiency. Spin-on filters protect individual components—such as valves and pumps or the whole circuit—from contaminant damage. The filter collects pollutants before they can circulate through the entire system. Spin-on filters help prevent contamination in hydraulic systems like:

  • Compressors
  • Cooling circuits
  • Fuel transfer lines
  • Hydrostatic charge pumps
  • Lube oil systems
  • Power transmissions
Features

DOMS can supply spin-on filters in 3-inch, 4-inch, and 5-inch sizes. We offer single and dual head configurations for applications under 200 psi to 500 psi. Connection types include flange, SAE, and NPT with the option of using bypass or no bypass valves. When maintenance is required, visual indicators alert the operator.

Industries & Applications

Spin-on filters are best for hydraulic systems with low to medium pressure conditions that do not have high-pressure surges. They achieve high levels of cleanliness for hydraulic systems in these industries:

  • Agriculture
  • Construction
  • Forestry
  • Manufacturing
  • Mining
  • Off-road/heavy equipment

Learn more about our spin-on filters here.

Sight and Pressure Gauges

Sight gauges serve an important purpose for manufacturing lines that use or process liquids. Hydraulic sight level gauges must meet the temperature, chemical resistance, and pressure requirements of their specific application. With sight gauges, manufacturers can monitor hydraulic levels to track usage and maintain proper levels.

Features

DOMS Incorporated offers sight and pressure gauges for low-pressure applications. Our hydraulic tank sight level gauges are not affected by sunlight or UV rays and are durable enough to function in harsh environments.

Industries & Applications

The industries that benefit from using sight and pressure gauges include:

  • Aerospace
  • Food and beverage
  • Hydraulics
  • Marine
  • Military and defense
  • Oil and gas

Visit our sight & pressure gauges page to find out more.

Reservoir Breather Filters

DOMS offers a complete product line of reservoir breather filters designed to function in hydraulic systems and other high-humidity settings. The components are effective in preventing solid particles from contaminating the hydraulic reservoir.

Features

Reservoir breather filters are threaded, with a quarter-turn bayonet. The filter is available with a nylon or cast aluminum cap with or without cap locks, and it can include a pressure valve if needed.

A pressure relief valve works as the filter in a hydraulic system. It will open when the filter gets dirty and start to restrict flow. Without a relief valve, the hydraulic pump could run hot or burn out. All the filters DOMS Incorporated supplies do not come equipped with relief valves. It is up to the OEM to request a design that mandates a filter with a relief valve installed.

Industries & Applications

Reservoir breather filters protect hydraulic systems from particle pollution in the following industries:

  • Agriculture
  • Construction
  • Forestry
  • Foundries
  • Heavy-duty or off-road equipment manufacturing
  • Mining

Learn more about our reservoir breather filters here.