We now offer you an expanded line of accessories for hydraulic lines and reservoirs! Finish off your hydraulic circuit with filter service indicators, pressure gauges, test points assemblies, valves, flanges, reservoir level gauges, sight glasses, a variety of tank and filler breathers, caps, vents, plugs, strainers, diffusers, magnets and more.
T.R.A.P. Breathers – NEW Technology!
Keep moisture and dirt OUT of your hydraulic reservoir with Donaldson’s innovative new technology, the Thermally Reactive Advanced Protection (T.R.A.P.™) breather! It senses moisture and begins working faster and lasts longer than desiccant breathers. This is an entirely new technology that provides better protection for your oil or hydraulic fluid.
Customer Success Story
Mechanical bourdon tube pressure gauges with glycerin-filled stainless steel bezels and cases in a variety of face diameters are easy to install for continual monitoring of system pressure.
Pressure Gauge Specs
In-line check valves to 200 gpm flow, ball valves for low, medium and high pressure (up to 7250 psi), two-way and three-way, standard and T-handle styles, also split flange ball valves.
Strainers & Diffusers
Strainers remove larger particulate from the fluid in your reservoir or sump. Diffusers reduce aeration, foaming, turbulence and noise caused by return lines.
Leak-free sight glasses come in plastic or metal for use with a variety of fluids. Steel models work well in high pressure and high temperature applications. In areas of low light, prism lens sight glasses provide quick, accurate readings.
Sight Glass Specs
Trap and hold ferrous metal contaminants, typically located in the tank. If not contained, these contaminants will cause collateral damage to significant components!
Reservoir Magnet Specs
Suction & Return Flanges, Weld Risers
These flanges are designed for tank top mounting and provide a seal to the pipe and reservoir without welding.
Flange & Weld Riser Specs
Filter Service Indicators
Service indicators — electrical, visual, pressure, or differential – tell you when to change the filter. Mount on the filter head or connect remotely to your central control panel.
Test points can be used as a connection into the hydraulic system on the suction side, pressure side or return. They allow connection for pressure and temperature transducers and provide ports for fluid sampling so you can monitor system cleanliness. Assemblies, adapters and hoses allow access to hard-to-reach lines.
Test Point Specs.
For connecting components on a hydraulic line we offer split flanges, gage port spacers, elbow flanges, blanking flanges, 4-bolt NPTF and SAE threaded flanges, flat socket weld and butt weld flanges in a broad range of sizes. O-Ring and flat face models, Schedule 61 and 62 options.
Port Flange Specs
Available in a wide range of styles, materials and sizes. Breathers provide clean airflow into reservoirs and other storage devices where there is an exchange of air during changing fluid levels. Breather caps with pressure relief and vacuum breakers limit air exchange and provide a positive suction at the pump inlet. Styles include spin-on, filler breathers, bayonet style with dip stick options, pressure filler breather caps and more. Prevent airborne contaminant from entering the tank!
Fluid Level Gauges
Gauges that show the oil level, or the oil level AND oil temperature. Steel and polyamide options. Models suitable for pressurized reservoirs.
Fluid Level Gauge Specs
Caps, Plugs & Vents
Donaldson’s range of plastic plugs, caps and vents are a rare find! They’re great for small power units and gearboxes.
Reservoir Magnet Specs