The AirTAC GFR400C10ALJF1WTK AirTAC Filter Regulator NPT 3/8 in 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 GFR400C10ALJF1WTK is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is size GFR400 with a 3/8 in NPT port, fitted with a 5 um filter element (the finer of the two published grades), an automatic drain that expels collected condensate without manual attention, and a low-pressure type regulator. An embedded square gauge scaled in MPa is included, a reverse/check valve is fitted, and the unit is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options for thread (PT standard; G and NPT to order), drain type, filter grade, gauge style and scale, and bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing; at this size the bowl is polycarbonate (PC). Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application before ordering.
| Model | GFR400C10ALJF1WTK AirTAC Filter Regulator NPT 3/8 in |
|---|---|
| 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) |
Point-of-use filter regulator on the supply to a carton-sealing or wrapping machine, delivering cleaned air at a regulated pressure to the seal and clamp cylinders, with the automatic drain keeping condensate out between shifts.
Filtered, regulated air for clamping fixtures and small pneumatic presses on a machining line, with the low-pressure type regulator specified for the circuit and the reverse/check valve holding the setting against supply dips.
Clean, regulated air for gate and diverter cylinders on a sorting conveyor, where the 5 um element protects the directional valves and the automatic drain clears water without a manual bowl check.
The real choices in this family are decodable from the code. Step up or down in size (200/300/400/600) to match the port and the flow your line needs - flow is published as curves, not a single rating, so send us your demand and we will confirm the right size before you order. Drain types are differential-pressure (default), automatic (this unit) and manual. Filter grade is 40 um standard or 5 um with code W (this unit). Gauges are the embedded square gauge (fitted here, MPa scale) or an optional external round gauge, with MPa, psi or bar scales. Thread is PT as standard with G and NPT as order options (this unit is NPT); a bracket is optional and not fitted here.
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 GFR flow as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure and air demand and we will confirm the flow from the datasheet for this exact model before you order.
The code A in the model specifies an automatic drain, which expels collected condensate without manual attention. The family is also available with a manual drain or with the default differential-pressure drain - tell us which you prefer and we will quote the corresponding code.
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.