The AirTAC AirTAC GFR40010LC2K Filter Regulator 3/8in PT, 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 GFR40010LC2K is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air through a 40 um element, then regulates downstream pressure with its low-pressure type regulator. This configuration is decoded as a 3/8 inch PT port, differential-pressure drain (drains automatically as the pressure differential across the element builds), a round pressure gauge fitted on the psi scale, a reverse/check valve (code K), and a mounting bracket included. The polycarbonate bowl suits the size 400 frame, with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with ports from 1/8 inch to 1 inch, and options that include a 5 um element (code W), automatic or manual drains, G (BSPP) or NPT threads, gauge scales in MPa, psi or bar, and a reverse/check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | AirTAC GFR40010LC2K Filter Regulator 3/8in PT, 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 — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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). |
| C | Gauge shape: Round. 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. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
On an assembly fixture that clamps at reduced air pressure, this unit filters the supply water and particulate and holds a stable low regulated setting, with the psi gauge giving the operator a direct readout at the station.
Feeding cylinders and actuators on a packaging line, the filter section strips condensate and debris before the regulator section, and the differential-pressure drain clears accumulated water without a manual blowdown routine.
At a spray booth or coating station running at reduced pressure, this unit cleans the compressed air and regulates it to the setting the applicator needs, while the check valve (code K) prevents backflow in the drop.
Size and port step up together: 200, 300, 400 and 600 carry progressively larger ports and flow capacity, so match the size to the air demand of the circuit rather than to the pipe alone. This unit is the 400 size with a 3/8 inch PT port. Drain choice matters: differential-pressure (this unit) drains as the element loads, automatic drains continuously, and manual requires operator attention. The 40 um element is the standard grade; specify 5 um (code W) where finer filtration is needed. The fitted round gauge reads in psi; MPa and bar scales are available, and the embedded square gauge is the standard alternative. PT is the standard thread; G (BSPP) and NPT are order options. A bracket is included with this configuration.
Because flow is published as curves and not as a single rated number, we cannot quote a rated flow for this unit. Send us your application details and we will confirm sizing against the datasheet curves before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this family as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your line pressure, port size and air demand and we will confirm the sizing against the datasheet on request.
The L code marks the low-pressure type regulator variant; its exact adjustment range is not published in our datasheet extract, so confirm the setting you need with us on request. The K code means a reverse/check valve is fitted, which blocks reverse flow through the unit. The rest of the code decodes as: 400 size, 3/8 inch PT port, 40 um filter, differential-pressure drain, and a round gauge on the psi scale.
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.