SPEEDAIRE
SPEEDAIRE 4ZK78 Filter Regulator 509 cfm 250 psi 40 micron 12.90 In H 7.48 In W
Filters and regulates compressed air at 509 cfm with a 40 micron particulate filter and 250 psi maximum pressure
- Delivers high-volume airflow with a 509 cfm maximum flow rate
- Withstands demanding systems at 250 psi maximum operating pressure
- Captures fine particles using a 40 micron particulate filter rating
- Fits tight installations with a 7.48 in overall width and 12.90 in height
- Allows easy pressure setting via a top-mounted knob adjustment mechanism
SPEEDAIRE 4ZK78 Filter Regulator
The SPEEDAIRE 4ZK78 is a heavy-duty filter regulator built for compressed-air systems that require clean, pressure-controlled flow. It suits workshops and industrial lines where particulate removal and consistent downstream pressure are daily necessities.
Metal Bowl with Sight Gauge and Manual Drain
The metal bowl with an integrated sight gauge lets operators see contamination levels at a glance without shutting down the line. A manual drain valve gives direct control over condensate removal, so maintenance can be timed to shift schedules rather than fixed intervals.
Aluminum Body with 3/4 in NPT Female Ports
The aluminum body resists corrosion while keeping the unit light enough for bracket or inline mounting. Left-to-right flow and 3/4 in NPT female inlet and outlet ports simplify plumbing in existing piping layouts. The top-mounted reinforced-nylon adjustment knob allows pressure changes without tools.
Highlights
- Delivers high-volume airflow with a 509 cfm maximum flow rate
- Withstands demanding systems at 250 psi maximum operating pressure
- Captures fine particles using a 40 micron particulate filter rating
- Fits tight installations with a 7.48 in overall width and 12.90 in height
- Allows easy pressure setting via a top-mounted knob adjustment mechanism
Specifications
| Brand | SPEEDAIRE |
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Questions about this item
How often will the 40 micron filter element need cleaning or replacement?
The 40 micron particulate filter traps debris; service interval depends on air quality and the 509 cfm flow rate. Inspect the metal bowl sight gauge regularly and clean or replace the element when pressure drop becomes excessive.
What limits continuous operation at the 509 cfm maximum flow rate?
The 250 psi maximum operating pressure and 40 micron filter rating set the performance envelope. Sustained flow at 509 cfm requires upstream supply pressure within the 250 psi limit and clean inlet air to prevent premature clogging.
How much heat or noise does the unit generate when running all day?
As a passive filter-regulator with no moving parts, it produces negligible heat and no mechanical noise. The aluminum body dissipates any minor temperature rise from compressed air expansion during continuous 509 cfm operation.
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