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Metal bowl pneumatic oil filter with 3/8 NPT ports

SPEEDAIRE

SPEEDAIRE 4ZL43 Pneumatic Oil Filter 3/8 NPT 20 cfm

SKU CH-RJQS-C25ZP

Coalescing pneumatic oil filter with 3/8 NPT ports, 20 cfm flow and 250 psi maximum pressure

  • Coalescing filter removes oil aerosols for cleaner air
  • 3/8 inch NPT female ports fit standard pneumatic lines
  • 20 cfm maximum flow supports moderate-demand tools
  • 250 psi operating pressure handles typical shop systems
  • 150 °F temperature rating suits common compressor environments

SPEEDAIRE 4ZL43 Pneumatic Oil Filter

The SPEEDAIRE 4ZL43 is a coalescing pneumatic oil filter designed for compressed air systems. It removes oil aerosols and contaminants to protect downstream equipment. The unit features a 3/8 inch NPT female inlet and outlet with a maximum flow rate of 20 cfm. It suits workshops and industrial settings needing clean air supply.

Thermals noise and power draw

The filter operates up to 250 psi and 150 degrees F without external power. A metal bowl contains the coalescing element and collected fluid. No differential pressure indicator is included so visual checks are needed. A manual drain allows simple removal of accumulated oil and water during routine maintenance.

Build fit and connections

Left-to-right airflow direction simplifies piping layout in new or existing lines. The 3/8 inch NPT ports match standard fittings for quick integration. Overall width is 3 1/8 inches and height is 9 5/16 inches for compact mounting. Buyers needing higher flow capacity or automatic drainage should consider other models.

Highlights

  • Coalescing filter removes oil aerosols for cleaner air
  • 3/8 inch NPT female ports fit standard pneumatic lines
  • 20 cfm maximum flow supports moderate-demand tools
  • 250 psi operating pressure handles typical shop systems
  • 150 °F temperature rating suits common compressor environments

Specifications

BrandSPEEDAIRE

Questions about this item

How do I install the 3/8 NPT pneumatic oil filter and what step is often missed?

Thread the 3/8 NPT female ports into the air line with flow running left to right, then tighten the metal bowl by hand before pressurising to 250 psi.

What maintenance will the coalescing filter need later?

Open the manual drain to remove collected oil and water; replace the coalescing element when pressure drop increases noticeably.

What limit appears first during continuous use at 20 cfm?

The 150 °F maximum operating temperature is reached before the 250 psi pressure rating under sustained flow.

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