Aftermarket SLC In-Line Pressure Filter
This page describes an aftermarket in-line pressure filter that cross-references the Bijur Delimon SLC. Bijur Delimon is a trademark of its respective owner. This is an aftermarket filter and replacement elements, not manufactured, sponsored, or endorsed by Bijur Delimon. SLC designations are for cross-reference identification only. The die-cast aluminum housing has a hand-removable bowl and protects injectors, meter units, and bearings by removing particles from oil in SLR and PDI lubrication systems.
Why an In-Line Filter Matters
Meter units and injectors have small orifices. Particles wear and clog them, causing uneven oil delivery and downtime. A filter placed upstream protects the whole distribution network from contamination. This unit is for oil only, never grease.
Micron Ratings and Depths
| 5 micron | For precision equipment requiring fine filtration |
| 10 micron | For metering devices and close-tolerance injectors |
| 25 micron | General industrial lubrication circuits |
| 125 micron | Coarse pre-filtration ahead of a finer element |
| 1 inch depth | Compact fit for tight spaces |
| 3 inch depth | Holds more contaminant, longer service life |
The 10 micron rating is available in the 3 inch depth size.
Assemblies and Replacement Elements
| 43252 | 1 inch | 5 micron | Uses element 43254 |
| 19850 | 1 inch | 25 micron | Uses element 6527 |
| 19851 | 1 inch | 125 micron | Uses element 6530 |
| 19329 | 3 inch | 10 micron | Uses element 19325 |
| 19848 | 3 inch | 25 micron | Uses element 6890 |
| 19849 | 3 inch | 125 micron | Uses element 6889 |
Always order elements by part number matched to the assembly. A wrong element will not seal or fit correctly.
Service and Replacement
The bowl is hand-removable, so no tools are needed for element changes. Elements are disposable, not cleanable. A finer element loads faster in a dirty system, so match the rating to the cleanliness requirement. Replace on a schedule based on the actual contamination level in the oil.
What to Confirm Before Ordering
Confirm the assembly number or element number from the data plate. Confirm the micron rating and depth needed for the circuit. Confirm ports are 1/8 inch NPT female and the mounting orientation is vertical. Confirm the system operates with oil, not grease. For related supply and system equipment, see the oil pump and single-line lubrication system pages. When the specifications are ready, contact the team with the assembly or element numbers for a written quotation.
Frequently Asked Questions
Can I use this filter with grease?
No, this filter is for oil only. Grease will block the sintered bronze element.
Which micron rating should I choose?
Match the rating to the cleanliness requirement. 25 micron is typical, 5 micron for precision.
Should I use a 1 inch or 3 inch depth?
The 3 inch depth holds more contaminant. The 1 inch depth fits tight spaces.
Is 10 micron available in a 1 inch element?
No, 10 micron comes in the 3 inch size. The 1 inch size covers 5 micron.
Can the sintered bronze element be cleaned?
No, elements are disposable by design. Replace with a new element at service interval.
Which element fits my filter assembly?
Match the assembly number to the cross-reference table. Order only the listed element number.
What port size does this filter have?
The inlet and outlet ports are 1/8 inch NPT female. Confirm your line fittings match.
What is the maximum operating pressure?
The pressure rating is 500 psi maximum. Do not exceed this in service.
Can the filter mount in any direction?
No, vertical orientation only. The bowl must hang downward for correct flow.
Who builds these filters, and how do I get a quotation?
IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.
Contact the team with your assembly or element numbers.
