The AirTAC GFR400C10AJF3WT AirTAC Filter Regulator 3/8 in 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 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 AirTAC GFR400C10AJF3WT is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This size 400 unit is threaded 3/8 in NPT, carries an automatic drain that ejects collected condensate without an operator stopping to drain it, and uses the finer 5 um filter element instead of the standard 40 um grade. An embedded square gauge reading in bar shows the downstream setpoint, the regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi), max inlet pressure is 1.0 MPa (145 psi), operating temperature is -5 to 70 C (non-freezing), and no mounting bracket is fitted on this code.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options that include manual or differential-pressure drains, the 40 um standard element, MPa, psi or bar gauge scales, an external round gauge, G (BSPP) or NPT threads in place of the PT standard, a reverse/check valve, and a bracket. Flow for the series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10AJF3WT AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Air preparation for a stamping or forming press: the 5 um element keeps fine particulate out of the valve stack while the regulator holds the working pressure the tooling was set up for, with the bar-scale gauge giving the operator a clear local reading.
Supplying pick-and-place and sealing cylinders on a packaging conveyor: the automatic drain handles condensate through continuous shifts so nobody has to stop the line to drain the bowl by hand.
Conditioning air for a paint spray booth: the 5 um element strips water and particles that would spoil the finish, and the regulator holds a steady atomizing pressure setpoint at the booth.
Size 400 with a 3/8 in NPT port sits in the middle of the GFR range; step down to size 300 or up to size 600 if your air demand points elsewhere - we will check the published flow curves against your consumption before you order. The automatic drain on this unit suits unattended or continuous duty; choose manual drain for scheduled draining or differential-pressure drain where a pressure signal should prompt it. The 5 um element (code W) is the finer option over the standard 40 um grade. The square gauge reads in bar; MPa and psi scales are available and an external round gauge can be ordered. NPT is specified here, PT is the catalogue standard thread, and G (BSPP) is an alternative. No bracket is fitted on this code - order a bracket variant if you need mounting. Because flow is published as curves, not a single rating, 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 number here. Send us your flow and pressure requirements and we will confirm the sizing from the datasheet before you order.
The W code specifies the finer 5 um element instead of the standard 40 um grade, useful where downstream valves and instruments tolerate less particulate. The A code specifies an automatic drain, which ejects condensate from the polycarbonate bowl on its own instead of waiting for a manual drain. Max inlet pressure is 1.0 MPa (145 psi), the regulator adjusts 0.15-0.9 MPa (20-130 psi), and the square gauge reads in bar.
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.