SPEEDAIRE
SPEEDAIRE 4ZL21 Coalescing Pneumatic Oil Filter 300 cfm 2 in NPT
A coalescing pneumatic oil filter removes oil aerosols from compressed air at up to 300 cfm through 2 in NPT ports
- Coalescing filter removes oil aerosols for cleaner air
- 300 cfm maximum flow supports high-demand pneumatic systems
- 2 in NPT female ports enable direct inline installation
- 250 psi operating pressure suits heavy-duty compressed-air lines
- Metal bowl with manual drain simplifies routine maintenance
Coalescing Pneumatic Oil Filter 300 cfm
The SPEEDAIRE 4ZL21 is a coalescing pneumatic oil filter built for compressed-air systems that need oil and moisture removal at high flow. It handles up to 300 cfm with a 2 in NPT female inlet and outlet, making it suitable for heavy-duty industrial air preparation.
Check System Pressure Flow And Ports
Verify that your compressor or distribution line operates at or below 250 psi and 150 Degrees F, and that the piping uses 2 in NPT female threads matching the filter's left-to-right flow direction. Ensure space for the 8 1/4 in width and 18 7/8 in height, and confirm a manual drain point is accessible for routine maintenance.
Heavy Duty Air Line Installations
This filter suits plants and workshops running large-capacity air lines that require coalescing filtration without a differential pressure indicator. It is not for systems needing automatic drainage, higher pressure ratings, smaller port sizes, or an integrated pressure drop gauge.
Highlights
- Coalescing filter removes oil aerosols for cleaner air
- 300 cfm maximum flow supports high-demand pneumatic systems
- 2 in NPT female ports enable direct inline installation
- 250 psi operating pressure suits heavy-duty compressed-air lines
- Metal bowl with manual drain simplifies routine maintenance
Specifications
| Brand | SPEEDAIRE |
|---|
Questions about this item
What comes in the box and what extra parts do I need to install the SPEEDAIRE 4ZL21 filter?
The unit includes a metal filter bowl and a manual drain. You must supply 2 in NPT fittings, piping, and thread sealant to connect the 2 in female inlet and outlet ports.
How do I decide which SPEEDAIRE coalescing filter matches my compressor output?
Match the compressor's free air delivery to the 300 cfm maximum flow rating and confirm the system pressure stays at or below 250 psi and 150 °F.
What does the 300 cfm rating mean when the filter is running on my shop air line?
It is the highest airflow the housing can pass while still removing oil aerosol; exceeding it reduces separation efficiency and raises pressure drop.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
