SPEEDAIRE
SPEEDAIRE 4ZK90 Filter-Regulator 1/2 in NPT 120 cfm 40 micron 5-150 psi
Combines a 40 micron particulate filter with a 5 to 150 psi regulator delivering up to 120 cfm through a 1/2 in NPT port
- 1/2 in NPT inlet fits standard airline connections
- 120 cfm maximum flow supports high-demand pneumatic tools
- 40 micron particulate filter protects downstream equipment
- 5 to 150 psi adjustment range suits varied applications
- Metal bowl with sight gauge allows quick visual inspection
1/2 in NPT Filter-Regulator
The SPEEDAIRE 4ZK90 is a filter-regulator designed for compressed-air systems requiring a 1/2 inch NPT female inlet. It delivers a maximum flow rate of 120 cfm while removing particulate down to 40 micron. The unit suits workshops and light industrial lines that need combined filtration and pressure control in a single intermediate-duty body.
Metal bowl with sight gauge
The metal filter bowl incorporates a sight gauge so operators can see condensate level at a glance. A manual drain lets users empty accumulated moisture and debris without tools. Because no pressure gauge is included, a separate gauge must be added to monitor the regulated output between 5 psi and 150 psi.
Top-mounted knob adjustment
The adjustment knob sits on top of the aluminium body and uses reinforced nylon internals for smooth pressure setting. Air flows left to right through the housing, which measures 2 11/16 inches overall width. Installers must provide NPT thread sealant and verify that upstream pressure does not exceed the 250 psi maximum operating limit.
Highlights
- 1/2 in NPT inlet fits standard airline connections
- 120 cfm maximum flow supports high-demand pneumatic tools
- 40 micron particulate filter protects downstream equipment
- 5 to 150 psi adjustment range suits varied applications
- Metal bowl with sight gauge allows quick visual inspection
Specifications
| Brand | SPEEDAIRE |
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Questions about this item
How often will the 40 micron filter element need replacement?
The 40 micron particulate filter requires manual draining via the metal bowl drain; replace the element when pressure drop across the unit becomes excessive for your application.
What limits continuous airflow at the 120 cfm rating?
Maximum flow is 120 cfm through the 1/2 in NPT inlet; the 250 psi maximum operating pressure and 150 psi adjustment range define the pressure envelope for sustained use.
How much heat does the aluminum body generate during all‑day operation?
The aluminum body dissipates heat from compressed air passing through; no external power is consumed, so heat rise depends on inlet air temperature and pressure differential across the regulator.
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