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White cylindrical SPEEDAIRE pre-filter element with microglass media

SPEEDAIRE

SPEEDAIRE 4GPH5 Pre-Filter Element 5 Micron 353 CFM

SKU CH-R1YW-ARXS4

A 5-micron microglass pre-filter element rated for 353 cfm airflow, meeting ISO 8573 standards

  • Removes particles down to 5 micron with microglass media
  • Delivers up to 353 CFM airflow for high-demand systems
  • Meets ISO 8573 air-quality standards for reliable performance
  • Compatible with Grainger parts 35GN66, 4GNU1, 4GPA3 for easy replacement
  • Pre-filter design protects downstream equipment from contamination

SPEEDAIRE 4GPH5 Pre-Filter Element

The SPEEDAIRE 4GPH5 is a particulate pre-filter element rated at 5 microns for compressed-air systems. It suits maintenance teams and plant engineers who need to protect downstream coalescing filters and pneumatic tools from coarse contamination. The microglass media handles a maximum flow of 353 cfm. It fits Grainger part numbers 35GN66, 4GNU1 and 4GPA3 in Series EF housings.

Sustained-load filtration behaviour

Under continuous flow the microglass depth media traps solid particles while maintaining a stable pressure drop across the element. The 5-micron rating remains consistent at the rated 353 cfm, preventing premature loading of finer downstream stages. ISO 8573 compliance confirms the particle-count performance is verified for ongoing service intervals. California Proposition 65 notices apply to chemicals present in the component materials.

Installation and common issues

The element slides into compatible Series EF filter housings without tools, aligning with the listed Grainger part numbers. Most installation problems arise when the housing O-ring is reused or seated unevenly, allowing unfiltered bypass. Users also forget to depressurise the line before opening the bowl, causing a sudden exhaust. A missing or damaged bowl guard can make the assembly unsafe under pressure.

Highlights

  • Removes particles down to 5 micron with microglass media
  • Delivers up to 353 CFM airflow for high-demand systems
  • Meets ISO 8573 air-quality standards for reliable performance
  • Compatible with Grainger parts 35GN66, 4GNU1, 4GPA3 for easy replacement
  • Pre-filter design protects downstream equipment from contamination

Specifications

BrandSPEEDAIRE

Questions about this item

How much pressure drop or heat does the 5 micron microglass element add when the compressor runs at 353 CFM all day?

The microglass media is rated for 353 CFM maximum flow, and ISO 8573 compliance means it meets air-purity classes without adding measurable heat; pressure drop across a clean 5 micron element is minimal under rated flow.

Which housing or filter head must I already own for the 4GPH5 element to seal and pass 353 CFM?

The element fits Grainger part numbers 35GN66, 4GNU1 and 4GPA3, which are the EF-series filter heads designed for 353 CFM airflow.

Will the 5 micron microglass element work with the older 35GN66 head I already have on my shop compressor?

Yes — 35GN66 is listed as a compatible Grainger part number, so the 4GPH5 element installs directly in that existing EF-series head.

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