Keltec KD90030, direct aftermarket replacement. This separator is a high-quality aftermarket separator designed to replace units from brands including Donaldson, Hitachi, and Sakura. It serves as a direct replacement for the Hitachi OSP-37 S compressor, ensuring reliable separation of contaminants from compressed air systems. Built to the original dimensions and ratings, this separator offers a cost-effective solution without compromising performance. Ideal for maintaining air quality and protecting downstream equipment, it is a dependable choice for industrial applications.
Technical properties & cross references
Specifications
| Outer Diameter |
108 mm (4.25 in) |
| Height |
321 mm (12.64 in) |
| Product Net Weight |
2 kg (4.41 lbs) |
| Stat. HS-Code |
84149000 |
| Country of Manufacture |
China |
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| Oxfil |
USD 73.97 |
16 Oct 2026 |
| FilterFinder Online |
USD 144.00 |
15 Oct 2026 |
| The Air Market |
USD 200.52 |
15 Oct 2026 |
| Spare Part Mart |
USD 59.18 |
Today |
Our price of USD 59.18 is 20% to 70% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Use cases & applications
Dusty Industrial Environments
In settings like construction sites or mining operations where airborne particulates are prevalent, this separator effectively removes debris from compressed air, preventing damage to pneumatic tools and machinery. This extends equipment life and reduces maintenance downtime.
Continuous-Duty Compressors
For compressors running 24/7 in manufacturing plants, this separator handles constant airflow without clogging, ensuring consistent air quality and minimizing pressure drops. It supports uninterrupted production schedules.
Inventory Consolidation for Fleet Operators
Fleet managers servicing multiple Hitachi OSP-37 S units can stock a single separator model, simplifying inventory management and reducing stockouts. This streamlines maintenance across different sites.
Remote or Harsh Climate Installations
In outdoor or unheated compressor stations, the separator's robust construction resists corrosion and temperature extremes, delivering reliable filtration even in challenging conditions.
Frequently asked questions
How do I confirm this separator fits my Hitachi OSP-37 S compressor?
This separator is verified as a direct replacement for the Hitachi OSP-37 S. Please check your compressor model number against our compatibility list to ensure a match.
What is the filtration rating of this separator?
Specific filtration ratings were not provided for this product. For detailed technical specifications, please contact our support team.
What are the thread and dimensions of this separator?
No dimensional or thread specifications were supplied. We recommend measuring your current separator or consulting your equipment manual to verify fit.
How does this aftermarket separator compare to the original brand?
This separator is built to the original dimensions and ratings, offering comparable performance at a lower cost. It is not an OEM part but a reliable aftermarket alternative.
How do I install this separator?
Installation is similar to the original separator. Ensure the system is depressurized, remove the old unit, clean the mounting surface, and install the new separator with proper sealing. Refer to your compressor manual for detailed steps.