The AirTAC GFR400C10ALJF1WT AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR400C10ALJF1WT is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 400-size unit is built with a 3/8 in NPT port, a 5 um filter element (the W grade, finer than the 40 um standard), an automatic drain that clears collected condensate from the metal bowl without manual intervention, and an embedded square gauge reading in MPa. It is the low-pressure regulator type, no mounting bracket is included, and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR400 series is one of four sizes (200, 300, 400, 600) in the GFR line, with port options from 1/8 to 1 in and drain, filter-grade, gauge-scale and thread choices available to order. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10ALJF1WT AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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 regulated low-pressure air to the gripper and clamp cylinders on a bottling line's capping station, where the 5 um element keeps water and fine particulate out of the valve circuit and the automatic drain clears condensate on its own.
Setting and holding supply pressure to the low-pressure clamping cylinders of a machining fixture, with the embedded MPa gauge giving the operator a direct pressure reference at the machine.
Supplying regulated low-pressure air to the blow-off nozzles that clear dust and chips from product on a packaging conveyor, with the automatic drain handling condensate continuously through the shift.
The real choices in this family are the size and port step (200/300/400/600, ports 1/8 to 1 in), which you set against the flow your line needs; the drain type (differential-pressure standard, automatic as fitted here, or manual); the filter grade (40 um standard or 5 um with the W code, as fitted here); the gauge (embedded square standard, external round optional, with MPa, psi or bar scales); the thread (PT is the standard, with G and NPT as order options); and the bracket. This unit is the low-pressure type, so confirm the control range suits your circuit before ordering. Because flow is published as curves rather than a single rated figure, ask us to check the curve data against your application before you order.
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 curve data and sizing from the datasheet on request.
The L code in GFR400C10ALJF1WT specifies the low-pressure regulator type rather than the standard one. The exact control range for this variant is not published in the material we hold, so we confirm it on request before you order. The 1.0 MPa (145 psi) maximum inlet pressure and the -5 to 70 C temperature range still apply.
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.