The AirTAC GFR400-10T AirTAC Filter Regulator NPT 3/8 in, Auto Drain 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 GFR400-10T is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 400-size unit is fitted with NPT 3/8 in ports, an automatic drain that expels collected condensate without manual attention, a standard 40 um filter element, and an embedded square gauge scaled in bar. The regulator adjusts outlet pressure across 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature range of -5 to 70 C (non-freezing). The bowl on this 400 size is polycarbonate (PC).
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200/300/400/600) covering a range of port sizes and flow duties. Options across the series include a 5 um element (code W), manual or differential-pressure drain, alternative gauge scales (MPa/psi/bar), G (BSPP) or NPT threads in place of the PT standard, and a mounting bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400-10T AirTAC Filter Regulator NPT 3/8 in, Auto Drain |
|---|---|
| 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, bar 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. 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. 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. |
| (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) |
Feed a workshop pneumatic press or clamp cylinder circuit: the 40 um element strips water and pipe scale before the air reaches the valve and cylinder, while the regulator holds a steady set pressure for consistent forming and clamping force.
Point-of-use preparation for packaging machinery actuating grippers, sealers and diverters. The automatic drain handles condensate on lines that run unattended through shifts, and the bar-scaled gauge lets operators verify set pressure at a glance.
Install on individual drop legs in a factory air distribution network, giving each machine its own filtered and regulated supply instead of relying on a single header regulator. The 3/8 in NPT ports suit mid-size machine drops.
Start with size and port: the 400 size with 3/8 in NPT ports sits mid-range in the GFR series, one step above the 300 and below the 600 for larger air demand. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering. This unit carries the automatic drain (code A), which suits unattended duty; manual (M) and differential-pressure (blank) drains are the alternatives in the series. The standard 40 um element is fitted here; specify code W if you need the 5 um grade. Gauge scale on this unit is bar; MPa and psi scales are available. Thread is NPT (code T); PT is the catalogue standard and G (BSPP) is also orderable. This configuration is ordered without a mounting bracket (code J); a bracket-included variant exists.
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 figure, so we do not quote a number here. Tell us your application and we will confirm the flow and datasheet figures for this unit on request before you order.
The A in the code GFR40010AJF3T specifies an automatic drain, which expels collected condensate from the bowl without operator attention. The series also offers a manual drain (code M) and a differential-pressure drain (blank code); any of the three can be ordered on this size.
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.