Hydraulic DPK350 Cartridge Assembly

DPK350 duplex filter assemblies allow continuous filtration during filter servicing to avoid machine shutdown. The DPK350 duplex design combines lighter weight aluminum heads with durable steel bowls for a high-performance assembly. Choose between optional features such as no by-pass, by-pass valve, visual indicators or combination electrical/visual indicators for a customized assembly that best fits the needs of your specific application.

Features

• Strong, durable anodized aluminum alloy head and steel housing
• Deep pleat filters for higher dirt holding capacity
• Service indicator options – electrical/visual or visual options
• Available with no bypass or with bypass valves for design flexibility
• Automatic bleed-over valve
• Fluorocarbon seals are used on high-performance DT filters
• Working pressure to: 24 bar / 350 psi 
• Rated static burst to: 48 bar / 700 psi
• Flow range to: 379 lpm / 100 gpm
• Porting size options: 
  • 1-½" SAE 4-Bolt Flange Code 61
• By-pass ratings of:
  • 3.5 bar / 50 psi 
  • No by-pass

Benefits

• Allows continuous filtration during filter servicing
• Highly configurable to fit your application requirements
• Featuring our high-performance DT filters with multiple efficiency options – allowing you to achieve the performance you need for most any application

Applications

• In-plant systems
• Lube oil systems
• Process fluids

Available Media Types

• Donaldson high-performance DT cartridges with exclusive Synteq™ – synthetic fiber media for greater filtration efficiency and higher dust-holding capacity
• High collapse options

This servicing information is provided as a best practices guide. It is not intended to replace or supersede the service instructions supplied by your engine or vehicle manufacturer.

Cartridge Servicing

1. Check the filter service indicator
   Check to see that the OEM specified service interval has been reached or that the service indicator shows that the filter is due for servicing.
   
   
2. Turn system off and release pressure
   Ensure that the hydraulic system is turned off.
   Check that there is no pressure present.
   
   
3. Remove the cartridge housing
   
   
4. Remove the used filter and gasket, if applicable
   Properly dispose of the cartridge according to local regulations.
   
   
5. Clean the head seal area and housing
   Clean out any sediment from the inside of the filter housing.
   
   
6. Inspect the new filter cartridge for damage
   Check the new filter you will be installing for any shipping and handling damage. Do not install a damaged filter.
   
   
7. Install and lubricate seals, gaskets and threads. 
   Lubricate the o-rings, gaskets, housing seals and threads with clean system oil.
   
   
8. Install new cartridge into the housing
   
   
9. Align threads. Spin filter until gasket contacts
   Fit the housing to the filter head as instructions on the housing.
   
   
10. Install housing according to manufacturer instructions
    
    
11. Bleed the hydraulic system and check for leaks