The AirTAC GFR40010LF2 AirTAC Filter Regulator PT3/8 Low-Pressure is a genuine G-series filter regulator: water separation, 40 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40010LF2 is a GFR-series filter regulator: one body that removes water and particulate from compressed air and reduces the downstream pressure, so the air feeding your valves and cylinders is clean and held at a set level. This configuration is the size 400 unit with a PT3/8 port, the standard 40 um filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and the low-pressure type regulator for circuits that run at reduced outlet pressures. The embedded square gauge fitted to this code reads in psi, and the polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, G (BSPP) and NPT threads as order options, a 5 um filter element (code W), automatic or manual drains, gauge scales in MPa, psi or bar, and a reverse/check valve option. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR40010LF2 AirTAC Filter Regulator PT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure type |
| Adjusting mechanism | Balanced type |
| Fluid | Compressed air |
|---|---|
| Max. working pressure | 1.0 MPa (145 psi) |
| Temperature range | -5 to +70 °C (unfreeze) |
| Drain type | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi scale |
| Reflux valve | Not fitted |
Specifications follow the official AirTAC G-series air-preparation data. The regulating band is set by the drain type: automatic and differential-pressure drains regulate 0.15 - 0.9 MPa, a manual drain regulates 0.05 - 0.9 MPa. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. Air must not freeze in the unit. Flow curves, weight and outline dimensions are not published in our data set — ask us and we will confirm from the factory datasheet.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| (blank) | No reverse-flow valve (the default). |
Field order is size, port, drain, type, bracket, gauge, shape, scale, grade, thread, reflux — a blank position takes the default. Example: GFR300-08 is a 300 body, PT1/4", differential drain, standard type, bracket included, gauge fitted, 40 µm, PT thread, no reflux valve.
A larger body carries a larger port and holds set pressure better as flow rises. AirTAC publishes flow only as curves, so size the body from your peak demand with headroom. The GFR600 uses an aluminium-alloy bowl; the 200, 300 and 400 bodies use PC.
| This model | GFR400 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
A press cell that clamps delicate workpieces runs its clamp cylinders at a reduced setting. The GFR40010LF2 filters the shop air feeding the circuit and holds the lower working pressure the clamps were set up for, with the psi gauge giving the operator a direct read of the set point.
On a carton-forming and sealing line, pick-and-place and flap-fold cylinders share one 3/8 in air drop. A GFR40010LF2 at the head of that drop strips water and grit before the directional valves and keeps the supply pressure steady through the shift, with the differential-pressure drain handling condensate during continuous running.
A welding robot's tool-change gripper and wire-feed air assist run off a single supply point. The GFR40010LF2 mounted at the cell inlet cleans the compressed air and regulates it down to the pressure the gripper was commissioned at, and the included bracket lets the unit be fixed to the cell frame next to the shutoff.
Start with the port step: size 400 carries a 3/8 in port, and the G-series steps through 200, 300, 400 and 600, so pick the size whose curve covers the flow your line needs - we will confirm the curve against your demand on request. Choose the drain to match the installation: differential-pressure drains suit steady-flow lines, automatic drains suit intermittent or unattended duty, and manual drains suit small or supervised points of use. The standard element is 40 um; specify the 5 um element (code W) where downstream equipment needs finer filtration. This code carries the low-pressure type regulator for reduced outlet pressures - confirm the exact adjustment range with us before ordering, as it is not published in the standard table.
Gauge options are the embedded square gauge (this unit reads psi) or an external round gauge, with MPa, psi or bar scales. Thread is PT as standard; G (BSPP) and NPT are catalogue options to order. A mounting bracket is included with this code.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. Without the K option, air cannot flow back through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated number, so we do not quote a figure here. Send us your line pressure and the air demand of your equipment and we will confirm the sizing from the datasheet curves before you order.
The L in the code marks the low-pressure type regulator, intended for circuits that run at reduced outlet pressures; the exact adjustment range for this variant is not published in the standard table, so confirm it with us before ordering. The drain on this code is differential-pressure: condensate collected in the bowl is discharged automatically as air flows through, so there is no manual draining to remember on a continuously running line.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity, thread type (PT / G / NPT), gauge scale and destination. We confirm price, availability and lead time — usually within 7-8 hours.