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Accessories

Donaldson offers an extensive line of accessories for hydraulic circuits, lines, and reservoirs!


New Active Reservoir Vent™ (ARV)
The Donaldson Active Reservoir Vent™ (ARV™) is an effective dry air purging system for minimizing water contamination in fluids. Slight pressurization of the reservoir head space with dry air prevents ingression of humidity thereby eliminating a common source of water contamination.
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Paper Mill
Hydraulic Can Press

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Breathers
Prevent airborne contaminant & moisture from entering the tank with Donaldson breathers! They provide filtered 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.
Breather Specs (catalog pages)

TRAP Breather Filter


Pressure Gauges
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


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.
Indicator Specs


Test Points
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


Valves
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.
Valve Specs


Port Flanges
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


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.
Strainer Specs


Sight Glasses
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


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






Browse the catalog
View hydraulic filter accessory products in our catalog.



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