The AirTAC GFR400-10 AirTAC Filter Regulator, PT3/8, Manual 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR400-10 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a PT3/8 port, a 40 um standard filter element, a manual drain bowl in PC (polycarbonate), and a fitted round gauge reading in psi. The standard regulator covers an adjustment range of 0.05-0.9 MPa (7-130 psi), and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part in the GFR400 size range. GFR filter regulators are available in sizes 200, 300, 400 and 600, with port options, automatic or differential-pressure drain variants, a 5 um filter element, gauge scale choices and bracket options. Flow is published as curves rather than a single rated figure, so we confirm datasheet figures on request before you order.
| Model | GFR400-10 AirTAC Filter Regulator, PT3/8, Manual Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, 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. Standard type, regulating 0.05 - 0.9 MPa (7 - 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (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. |
| (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) |
Feeding filtered, regulated air to the pneumatic cylinders and grippers that index, stop and divert bottles along a filling line, with the PT3/8 port matching typical 3/8 branch lines and the manual drain suiting a supervised shift routine.
Conditioning shop air ahead of paint spray guns in a finishing booth: the 40 um element removes water and particulate that would spoil finish quality, while the regulator holds a steady gun supply pressure and the psi gauge gives the operator a direct reading.
Supplying regulated air to the clamping circuits of a machining fixture or workholding station, where a stable set pressure protects the clamp sequence and the manual drain is emptied during scheduled machine checks.
Size up by port and required flow: the GFR400 sits mid-range in the GFR line, and stepping to 300 or 600 changes both the port and the flow capacity. Choose the drain to match the site: this unit is manual drain, which suits supervised installations where an operator blows down the bowl on a schedule; automatic or differential-pressure drain variants exist for unattended lines. The 40 um element is standard; specify the 5 um (W) grade where finer pre-filtration is needed. Gauge scale is selectable (MPa, psi or bar), and thread is PT as standard with G (BSPP) and NPT available as order options.
Flow for GFR units is published as curves, not a single rating, so ask us to confirm sizing against your application and flow curve before ordering.
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 rather than a single rated figure, so no single flow number can be quoted here. Tell us your line pressure, set pressure and expected air demand, and we will confirm the sizing against the datasheet curves on request before you order.
The M in the code GFR40010MJC2 specifies a manual drain bowl: condensate collects in the polycarbonate bowl and an operator drains it by hand. Choose manual drain for supervised installations with a regular maintenance routine; automatic and differential-pressure drain variants of the same GFR400 size are available for unattended lines.
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.