The AirTAC GFR400C10ALJC1WTK 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 GFR400C10ALJC1WTK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in one body, sized for 3/8 inch NPT ports. This configuration carries a 5 um filter element (W code) for finer filtration than the standard 40 um element, an automatic drain (A code) that removes collected condensate without anyone operating it, and the low-pressure regulator type (L code). It is fitted with an external round gauge reading in MPa (C1 code) and a reverse/check valve (K code), and no mounting bracket is included (J code). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The bowl on this size 400 unit is polycarbonate (PC).
This is a genuine AirTAC part. The GFR filter-regulator family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and with a choice of drain type, 40 um or 5 um filtration, gauge style and scale, PT, G or NPT thread, and bracket options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10ALJC1WTK 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) |
Filtered, regulated air to the pneumatic clamps on a machining-centre fixture: the 5 um element helps protect seal and valve surfaces, the regulator holds the clamp pressure setting, and the check valve blocks backflow if the supply dips.
Clean, reduced-pressure pilot air to actuated control valves at a water-treatment plant, with the round MPa gauge letting an operator verify the pilot setpoint at the unit.
Supply air for the divertor and stopper cylinders on a bottling-line conveyor, where the automatic drain clears condensate on its own and the regulator keeps cylinder speed consistent between shifts.
Start with size and port: this unit is size 400 with 3/8 inch NPT ports; larger sizes in the family step up in port and flow capacity. Drain choice is real: differential-pressure (the default, draining as the element loads up), automatic as fitted here, or manual, which needs periodic operation. Filter grade is 40 um standard or 5 um with the W code, as on this unit. Gauges are an embedded square gauge as standard or an external round gauge as fitted here, with MPa, psi or bar scales. Thread is PT as the standard, with G and NPT as order options; this unit is NPT. Brackets are optional and this configuration has none. 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 rather than a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow from the datasheet on request.
It marks the low-pressure regulator type. The exact adjustment range for the low-pressure version is not published in the catalogue data we hold, so we confirm it on request. The 1.0 MPa (145 psi) maximum inlet pressure and the -5 to 70 C temperature range still apply to this unit.
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.