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Silver metal coalescing filter housing with clear polycarbonate bowl and manual drain valve

SPEEDAIRE

SPEEDAIRE 4ZL36 Coalescing Filter 1/2 in NPT 150 psi 20 cfm

SKU CH-XFMR-9Q527

Coalescing filter removes oil aerosols at 20 cfm with 150 psi rating and manual drain

  • Coalescing filter removes oil aerosols for cleaner pneumatic air
  • 1/2 in NPT female ports fit standard airline plumbing
  • 20 cfm maximum flow supports intermediate-duty tools
  • 150 psi pressure rating handles typical shop systems
  • Manual drain and polycarbonate bowl simplify routine maintenance

SPEEDAIRE 4ZL36 Coalescing Filter

This SPEEDAIRE 4ZL36 coalescing filter removes oil aerosols and fine particles from compressed air lines. It features a 1/2 inch NPT female inlet and outlet rated for 150 psi maximum operating pressure. The unit suits workshops and industrial sites needing cleaner air for pneumatic tools or spray equipment.

Sustained flow and pressure handling

The filter maintains performance at a maximum flow rate of 20 cfm and a maximum operating temperature of 125 Degrees F. Its polycarbonate bowl allows visual monitoring of collected contaminants during continuous operation. A manual drain enables periodic removal of accumulated liquids without interrupting the air supply.

Installation checks before ordering

Verify that your system uses 1/2 inch NPT connections and operates within the 150 psi pressure limit. Confirm the left-to-right flow direction matches your piping layout. Note the overall height of 8 1/2 inches and width of 2 11/16 inches to ensure adequate clearance at the mounting location.

Highlights

  • Coalescing filter removes oil aerosols for cleaner pneumatic air
  • 1/2 in NPT female ports fit standard airline plumbing
  • 20 cfm maximum flow supports intermediate-duty tools
  • 150 psi pressure rating handles typical shop systems
  • Manual drain and polycarbonate bowl simplify routine maintenance

Specifications

BrandSPEEDAIRE

Questions about this item

Does the 150 psi SPEEDAIRE 4ZL36 filter add noticeable resistance or heat to a line running all day?

The coalescing element is rated for 20 cfm at 150 psi, so pressure drop stays low and the polycarbonate bowl handles 125 °F without overheating the supply.

What fittings or accessories must I already have to install this 1/2 in NPT filter?

You need 1/2 in NPT male threads on both the upstream and downstream piping, plus thread sealant or tape; the unit has female ports on both sides.

Will this intermediate-duty filter work with my older compressor that only delivers 11 cfm?

Yes — the 20 cfm maximum simply means it will not restrict a smaller 11 cfm supply, and the manual drain functions the same regardless of flow.

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