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Metal filter regulator lubricator with three bowls and top adjustment knob

SPEEDAIRE

SPEEDAIRE 4ZL99 Filter Regulator Lubricator 150 psi 160 cfm 32 oz bowl

SKU CH-970J-4H6G5

Combines filtration, regulation and lubrication for compressed-air systems with a 160 cfm flow capacity and 32 oz metal bowls

  • 5-micron filtration protects downstream tools
  • 160 cfm capacity supports high-demand pneumatic systems
  • 150 psi regulated output delivers consistent pressure
  • 32 oz metal bowls with sight glass simplify maintenance
  • Heavy-duty series construction withstands tough environments

SPEEDAIRE 4ZL99 Air Treatment Unit

The SPEEDAIRE 4ZL99 combines a filter, regulator and lubricator in one assembly for compressed-air systems. It handles a maximum flow of 160 cfm and an operating range of 5 to 150 psi with a 3/4 inch NPT female inlet. The 5 micron filter element and 32 oz metal bowls with sight glasses suit heavy-duty industrial use.

Sustained Operation at 160 cfm

The unit is rated for 250 psi maximum pressure while delivering up to 160 cfm continuously. A reinforced nylon adjustment knob on top sets outlet pressure across the full 5 to 150 psi range without creep during long runs. Metal bowls resist heat and chemical exposure better than polycarbonate alternatives in demanding environments.

Installation and Common Issues

Left-to-right flow direction and a 14 3/4 inch overall width determine mounting orientation and clearance. The 3/4 inch NPT female ports require matching male fittings and thread sealant. Manual drains must be opened regularly; forgetting this lets water and oil carry downstream into tools.

How it compares

Measured against everything we stock in Compressors, Inflators & Vacuum Pumps, at today’s prices. Recalculated every night.

Price $248.99
Pricier than about 90% of the 1,520 comparable items (median $36.99).

Specifications

Product
Brand nameSPEEDAIRE

Questions about this item

How much air can the 4ZL99 pass continuously at its 150 psi working pressure?

The unit is rated for a maximum flow of 160 cfm, so it can supply that volume continuously when the regulator is set to 150 psi.

What size NPT fittings and thread sealant do I need to plumb this FRL into my shop air line?

The air inlet is a 3/4 inch female NPT port; you will need matching 3/4 inch male NPT fittings and suitable pipe thread sealant for a leak-free connection.

Will the 5-micron metal bowl and manual drain on this FRL work with my older compressor that puts out some oil and water?

Yes, the 5-micron metal bowl with sight glass traps particulates and the manual drain lets you purge accumulated oil and water from legacy compressors.

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