The AirTAC AirTAC GFR40010AF2TK Filter Regulator 3/8 NPT 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 GFR40010AF2TK is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 3/8 in NPT port, an automatic drain that expels collected condensate without manual attention, the standard 40 um filter element, an embedded square gauge scaled in psi, a fitted reverse/check valve, and an included mounting bracket. The polycarbonate bowl is rated for a maximum inlet pressure of 1.0 MPa (145 psi), the standard regulator adjusts from 0.15-0.9 MPa (20-130 psi), and the unit operates from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200/300/400/600) in the G-series line. Options across the range include manual or differential-pressure drains, a 5 um element, alternative gauge scales in MPa or bar, and G or NPT thread variants. Flow figures for this model are published as curves rather than a single rating, so ask us to confirm sizing or datasheet details for your application before ordering.
| Model | AirTAC GFR40010AF2TK Filter Regulator 3/8 NPT |
|---|---|
| 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 | Standard 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 — square, 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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)). |
| (blank) | Standard 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. |
| 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 clean, regulated air to the clutch and counterbalance circuits of a mechanical stamping press, with the automatic drain handling condensate between shifts.
Conditioning supply air for the cylinders and stopper gates on a carton packaging conveyor, where the psi gauge lets line staff set and verify setpoint at a glance.
Providing filtered, regulated air to pneumatic fixtures on a laboratory test bench, with the check valve holding downstream pressure if the supply dips.
Size 400 with a 3/8 in port sits in the upper-middle of the G-series range; step up or down by port size to match the air demand of the circuit, and we will confirm flow against the published curves before you order. The automatic drain on this unit suits installations that are not checked daily; choose manual or differential-pressure drain variants where a different service routine fits better. The 40 um element is the standard grade; a 5 um (W) element is available for finer pre-filtration. The square gauge here reads in psi; MPa or bar scales and an external round gauge are orderable alternatives. Thread is NPT on this code, with G (BSPP) and PT as catalogue options, and the bracket is included. If you are unsure which combination your line needs, send us the application and we will confirm sizing from the datasheet.
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 model as performance curves rather than a single rated figure, so we do not quote one number. Send us your application's air demand and we will confirm sizing against the datasheet curves on request before you order.
The A in the code specifies an automatic drain, which expels collected condensate from the polycarbonate bowl without operator attention. Manual and differential-pressure drain variants are available in the same size if your maintenance routine prefers them.
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.