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Uni Filter
Uni Filter 88CR Fuel Oil Filter Replacement Cartridge
Replacement cartridge fits multiple oil-fired boiler filters, rated 10 micron at 12 P.S.I. with 3/8" NPT connections
- TypeBoiler Accessories
- Compatible with multiple boiler filter models including General 1A-25A and Uni Filter 77
- 10 micron wool felt media captures fine particles for cleaner fuel delivery
- Rated for 12 PSI working pressure suits residential and light commercial oil-fired systems
- 3/8 inch NPT connection fits standard fuel oil distribution piping directly
- Designed as final filtration stage protecting burners and nozzles in heating appliances
Replacement Cartridge for Oil-Fired Heating
The Uni Filter 88CR cartridge replaces the filter element in General 1A-25A and 1A-25B housings as well as Uni Filter 77 and 77B units. It fits a range of equivalent models including Sears 8055, Sid Harvey XF-25/264, Autoflo F-300, Eddington S-254 and Federal A-77. The part is designed for oil-fired heating appliances in small to average homes and commercial buildings.
Working Pressure and Filtration Limits
The cartridge operates at a maximum working pressure of 12 P.S.I. and connects via 3 8-inch NPT threads. Filtration is rated at 10 microns using a wool felt media. These figures define the practical envelope: pressure above the rating or particles finer than the stated micron level fall outside the design limits.
Capacity and Headroom in Distribution Systems
The filter serves as final filtration in central fuel oil distribution systems, handling typical flow demands for the stated building sizes. It runs out of headroom when system pressure exceeds the 12 P.S.I. rating or when contaminant loads clog the wool felt faster than scheduled changes, requiring more frequent replacement.
Highlights
- Compatible with multiple boiler filter models including General 1A-25A and Uni Filter 77
- 10 micron wool felt media captures fine particles for cleaner fuel delivery
- Rated for 12 PSI working pressure suits residential and light commercial oil-fired systems
- 3/8 inch NPT connection fits standard fuel oil distribution piping directly
- Designed as final filtration stage protecting burners and nozzles in heating appliances
Specifications
| Type | Boiler Accessories |
|---|
Questions about this item
Should I choose the 88CR cartridge for my General 1A-25A or 1A-25B filter housing?
Yes, the 88CR is a direct replacement for the General 1A-25A and 1A-25B housings, matching the original 1711-0008 part specification.
What does the 10 micron rating mean for my oil-fired boiler?
It captures particles down to 10 microns, providing final filtration that protects burner nozzles in small to average homes and commercial buildings.
How does the 3/8" NPT connection and 12 P.S.I. working pressure limit installation?
The cartridge fits 3/8" NPT ports and is rated for 12 P.S.I., so it suits standard low-pressure fuel oil distribution systems.
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