The AirTAC GFR400C10ALJF1T 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 GFR400C10ALJF1T is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is tapped 3/8 in NPT, carries an automatic drain that ejects collected condensate without manual attention, and uses the standard 40 um filter element. The embedded square pressure gauge is scaled in MPa. It is the low-pressure regulator type, is supplied without a mounting bracket and without a reverse/check valve, and has a polycarbonate bowl. Maximum inlet pressure is 1.0 MPa (145 psi) over a working temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and catalogue options include manual or differential-pressure drains, a 5 um element (code W), an external round gauge with MPa, psi or bar scales, G (BSPP) or NPT threads, and mounting brackets. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10ALJF1T 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) |
Feeding pneumatic clamps and swing cylinders on a machining fixture that hold workpieces at reduced pressure, with the automatic drain keeping condensate out of the fixture lines and the 40 um element protecting the clamp valves.
Filtering and regulating the supply to sealing bars and vacuum generators on a carton or blister packaging line, where the square MPa gauge gives the setter a local pressure readout at the machine.
Conditioning low-pressure air to bench-top test rigs or spray coating stations, where a compact filter regulator at the point of use keeps water and debris out of sensitive downstream devices.
Pick the size and port against the air demand of the circuit: this unit is size 400 with 3/8 in NPT ports, one step in a GFR range that runs from size 200 (1/8-1/4 in) up to size 600 (3/4-1 in). Drain type is a real choice: this configuration has an automatic drain, while manual and differential-pressure drains are available on the family. The 40 um element is standard; specify 5 um (code W) where finer particulate capture is needed. The embedded square gauge reads in MPa; psi and bar scales and an external round gauge are options. Thread: PT is the AirTAC standard, with G (BSPP) and NPT as order options - this unit is NPT. A bracket is optional. Two honest notes: this is the low-pressure regulator type and its exact adjustment range is not published, and flow is published as curves rather than a single rating, so ask us to confirm both 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 GFR400 flow as curves rather than 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 on request before you order.
This unit carries the A drain code: condensate collected in the polycarbonate bowl is ejected automatically, which suits unattended duty. Manual and differential-pressure drains are catalogue options on the GFR family 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.