The AirTAC GFR400C10MLJF3TK AirTAC Filter Regulator NPT3/8 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 See datasheet 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 GFR400C10MLJF3TK is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This size-400 configuration has a 3/8 in NPT thread, a manual-drain polycarbonate bowl, the standard 40 um filter element, the low-pressure regulator type, an embedded square gauge with bar scale, and a reverse/check valve fitted; no mounting bracket is included. 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 series is made in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and can be ordered with manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, different gauge scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400C10MLJF3TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
On a light-assembly line running actuators at modest pressures, this unit filters water and scale out of the shop air and holds a steady low regulated supply to the cylinders, with the bar-scale gauge giving operators a direct line readout.
Packaging conveyors use short-stroke air cylinders for diverting and clamping; this filter regulator conditions the supply and keeps the pressure stable so divert timing stays repeatable, while the manual drain is emptied during scheduled line checks.
Pneumatically piloted process valves need a clean, steady pilot supply; this unit removes condensate and particulate ahead of the pilot line and regulates it at low pressure, with the reverse/check valve helping hold the setting if upstream supply dips.
Step up through the GFR sizes (200/300/400/600) as your required flow and port size grow; this unit is size 400 with a 3/8 in NPT port. The manual drain means someone opens the bowl drain periodically instead of relying on an automatic or differential-pressure mechanism - fine where checks are already part of the routine. The 40 um element is the standard grade; specify W for 5 um if finer filtration is needed. The square gauge here reads in bar; MPa and psi scales are alternatives, and an external round gauge is optional. This is the low-pressure regulator type, so its exact adjustment range is not published in the catalogue - we confirm it on request. PT is the standard thread and G or NPT are order options; this unit is specified NPT. Flow is published as curves, not a single rating, so ask us to confirm sizing against your application 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, not as a single rated figure, so we do not quote a l/min or SCFM number. Tell us your application and we will confirm the sizing against the datasheet curves on request before you order.
The bowl collects removed water and the manual drain means an operator opens the drain to empty it, rather than the unit discharging automatically. It suits installations already visited on a routine, and the 40 um element is the standard filtration grade; code W gives 5 um if you need finer filtration.
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.