The AirTAC GFR40010ALC3TK AirTAC Filter Regulator NPT3/8 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 automatic 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 GFR400 series combines water and particulate filtration with pressure regulation in a single body, and this configuration, GFR40010ALC3TK, is the size 400 unit with a 3/8 in NPT port. It carries a 40 um standard filter element, an automatic drain that expels collected condensate without manual attention, and a low-pressure regulator type for circuits that run below standard regulator settings. A round pressure gauge scaled in bar is fitted so the set pressure is visible at the unit, and a reverse/check valve is included to hold downstream pressure when the upstream supply is lost. The polycarbonate bowl suits the 400 size, a mounting bracket is included, the maximum inlet pressure is 1.0 MPa (145 psi), and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, a choice of differential-pressure, automatic or manual drain, a 5 um (code W) element alternative to the standard 40 um, and gauge or bracket variations. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR40010ALC3TK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar 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". |
| A | Drain: Automatic 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. |
| 3 | Gauge scale: bar. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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) |
Feeding air to clamping fixtures and light press cylinders on a production line, where the unit filters line water and particulate, holds a set pressure downstream of the check valve, and drains condensate automatically between shifts.
Conditioning shop air before it enters a bench-scale process skid or test rig, giving the skid a visible bar-scaled setpoint, a 40 um element to protect sensitive instruments, and automatic drainage so the unit can sit inside an enclosure unattended.
Preparing air for the vacuum, ejector and actuator circuits of a packaging machine that runs at reduced pressure, where the low-pressure regulator type matches the machine's operating band and the automatic drain keeps condensate out of the valve manifold.
Size 400 with a 3/8 in NPT port is the mid-to-large step of the GFR range; step up to size 600 or down to 300/200 according to the flow your line needs, since larger sizes carry larger ports and more flow capacity. This unit is already specified with the automatic drain, which suits unattended or hard-to-reach installations; manual drain and differential-pressure drain are the alternatives in the family if you prefer condensate removal tied to pressure drop or by operator routine. The 40 um element is the standard grade; specify the W variant for 5 um where downstream equipment needs finer filtration. The fitted round gauge reads in bar; square embedded gauges and MPa or psi scales are the other catalogue choices. NPT is the thread on this unit; PT (standard) and G (BSPP) are available to order, and the mounting bracket is included.
Because flow for the G series is published only as curves and not as a single rated number, we do not quote a flow figure here. Send us your application details and we will confirm sizing against the datasheet curves before you order. The low-pressure regulator type on this unit is intended for circuits below standard regulator settings; its exact adjustment range is not published in our sheet, so confirm it with us on request.
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 G-series flow only as curves, not as a single rated figure, so we do not quote a l/min, m3/h or SCFM number here. Send us your application flow and pressure and we will confirm sizing against the datasheet curves on request before you order.
The A in the code GFR40010ALC3TK specifies an automatic drain, which expels collected condensate by itself and suits unattended or enclosed installations. The GFR family also offers manual drain and differential-pressure drain as decodable options, and the drain choice affects the regulator adjustment range, so confirm the details with us on request.
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.