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AirTAC GAFR400 · Filter & Regulator (Filter + Pressure Regulator, One Body)

Airtac GAFR Adjustable Filter Regulator GAFR40010LK

The AirTAC Airtac GAFR Adjustable Filter Regulator GAFR40010LK is a genuine two-in-one filter & regulator — a diversion-type water/particulate filter and a balanced pressure regulator built into ONE body. It has 3/8" ports, a 40 µm filter element and regulates 0.15 - 0.4 MPa (20 - 58 psi). It has no lubricator, so it adds no oil to the airflow.

  • TypeFilter & regulator
  • Port size3/8"
  • Pressure range0.15 - 0.4 MPa (20 - 58 psi)
  • Filtering grade40 µm
  • Bowl materialPC
  • Drainsemi-auto + manual
  • Pressure gaugeCircular, MPa / psi
  • Weight880 g
$71.09 $79.58Save 10% Standard model — ready in 3-5 business days to process and dispatch
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  • No minimum order. A single piece can be ordered.
  • Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
Compare every GAFR400-10 bowl, gauge and thread option on one page All GAFR400-10 codes →
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About the Airtac GAFR Adjustable Filter Regulator GAFR40010LK

The GAFR40010LK is a filter and regulator combined into a single body, cleaning incoming air and holding a steady outlet pressure without a separate filter-regulator train. This lower-pressure version regulates from 0.15 to 0.4 MPa (20-58 psi) and comes with a 40 um element, a 100 cc condensate bowl, and a fitted circular gauge reading MPa/psi.

Its diversion structure spins the air to drop liquid water and solid particles into the bowl, while the balanced, self-locking regulator keeps the set pressure stable as supply varies. At 880 g with a 3/8in port, this unit suits compact machine builds where a lighter, single-body solution reduces rail space and potential leak points.

Airtac GAFR Adjustable Filter Regulator GAFR40010LK Technical Specifications

ModelAirtac GAFR Adjustable Filter Regulator GAFR40010LK
SeriesGAFR400 filter & regulator
Port size3/8" (PT thread)
Filtering grade40 µm
Pressure range0.15 - 0.4 MPa (20 - 58 psi)
TypeLower pressure
Bowl materialPC
Drain typeSemi-auto drain + manual drain
FluidAir
Max. pressure1.0 MPa (145 psi)
Proof pressure1.5 MPa (215 psi)
Temperature range-5 to +70 °C (unfreeze)
Capacity of drain bowl100 cc
BracketIncluded
Weight880 g

Specifications follow the official AirTAC GAFR catalogue (pages 235-236). Air must not freeze in the unit. The fitted circular gauge reads in MPa / psi, set by the PT thread code. This unit filters and regulates only; it does not add lubrication.

Model Code: Airtac GAFR Adjustable Filter Regulator GAFR40010LK

GAFR400GA400 series filter & regulator — sets the port range, drain-bowl capacity and weight.
(blank)Bowl material: PC. Available on this body: PC (blank), Metal (C), Nylon (N).
10Port size 3/8". This body offers 10 = 3/8", 15 = 1/2".
(blank)Drain: Semi-auto drain + manual drain.
LLower pressure type — 0.15 - 0.4 MPa (20 - 58 psi). This body offers Standard (S) or Lower pressure (L).
(blank)Mounting bracket included.
(blank)Circular pressure gauge fitted.
(blank)Filtering grade 40 µm.
(blank)PT thread; gauge scale MPa / psi.
KReverse-flow (reflux) valve attached.

The filter and the regulator are ONE body here — there is no separate GAF filter or GAR regulator part to assemble. Need lubrication downstream too? Add a lubricator by ordering the matching GAFC400-10 F.R.L. combination instead.

Size Class & Flow Envelope

  • GAFR2001/8"-1/4" · 2000 L/min
  • GAFR3001/4"-1/2" · 3500 L/min
  • GAFR4003/8"-1/2" · 7000 L/min
  • GAFR5003/4" · 8000 L/min
  • GAFR6003/4"-1" · 12000 L/min

Figures are the end of the flow curve plotted in the AirTAC catalogue at 0.7 MPa inlet pressure — a sizing envelope for comparing bodies, not a rated flow. Read the catalogue curve for a real duty point. Outlet pressure falls as flow rises, so size a body with headroom above your peak demand.

This modelGAFR400 · 3/8" · curve to 7000 L/min
One size downGAFR300
One size upGAFR500 (curve to 8000 L/min)
Add a lubricatorGAFC400-10 (F.R.L. combination)

Where the Airtac GAFR Adjustable Filter Regulator GAFR40010LK Is Used

precision_manufacturing

Precision pressure setting

Use the lower-pressure range to set a precise 0.3 MPa for a delicate clamping fixture, where the balanced regulator holds the outlet steady despite supply fluctuations.

engineering

Compact machine build

Mount the 880 g unit on a small assembly station with the included bracket, saving rail space compared to separate filter and regulator bodies.

science

Lab air supply

Feed a test bench or instrument air line at a controlled low pressure, with the 40 um element protecting sensitive equipment from solid particles.

Is the Airtac GAFR Adjustable Filter Regulator GAFR40010LK the Right Air-Prep Unit?

Choose the GAFR400 body when you need a 3/8in port and a 100 cc drain bowl, stepping up from the GAFR300's 60 cc bowl for longer intervals between draining. The L type caps the regulated range at 0.4 MPa, so confirm your application never needs more than that; the included bracket mounts the 880 g unit securely, and the fitted gauge shows the set pressure directly. The semi-auto and manual drains are both fitted, and the reverse-flow valve is attached as an ordering option. If oil is needed downstream, order the matching GAFC400-10 combination instead. With a 1.0 MPa max supply, you have about 0.6 MPa of headroom above the 0.4 MPa top of the regulated range.

Quick checklist

  • ✓ Body size for your peak flow (3/8" here)
  • ✓ Standard 0.9 MPa or lower-pressure 0.4 MPa
  • ✓ Bowl material: PC (blank), Metal (C), Nylon (N)
  • ✓ Drain: semi-auto + manual, or automatic
  • ✓ Element 40 µm or 5 µm
  • ✓ Bracket kept or removed (J); add a lubricator = GAFC
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Installation & Maintenance Notes

  • check Install with the airflow arrow: IN to OUT, gauge/knob accessible.
  • check Keep inlet pressure at or below 1.0 MPa (145 psi).
  • check Set pressure with the pressed-in self-locking knob; pull to adjust, press to lock.
  • check Drain condensate before the 100 cc bowl fills.
  • check Keep the unit above freezing (-5 to +70 °C, unfreeze).
  • check Support the 880 g unit on its bracket, not on the tubing.

This is a filter and regulator only — it delivers filtered, pressure-set air with no added oil. If a downstream tool needs lubrication, add a separate lubricator or order the GAFC400-10 combination; do not expect an oil mist from this unit.

Airtac GAFR Adjustable Filter Regulator GAFR40010LK FAQ

The GAFR40010LK is a filter & regulator with a 3/8in port, a lower-pressure range of 0.15-0.4 MPa (20-58 psi), a maximum pressure of 1.0 MPa (145 psi), and a proof pressure of 1.5 MPa (215 psi). It operates from -5 to 70 C, has a 100 cc drain bowl, and weighs 880 g.

The K indicates the unit has a reverse-flow (reflux) valve fitted. This is an ordering difference from models without K; the catalogue does not detail its function in our data, so treat it as a specified option.

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