The AirTAC GFR400C15ALJC2 AirTAC Filter Regulator PT1/2, 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 AirTAC GFR400C15ALJC2 is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is built for 1/2 in PT threaded ports, carries the standard 40 um filter element, and has an automatic drain that expels collected condensate from the polycarbonate bowl without manual attention. It is the low-pressure type, and the fitted round gauge reads in psi so operators can check and set downstream pressure at a glance.
This is a genuine AirTAC part. The GFR400 series spans the larger end of the G-series range, with alternative ports, thread options (PT standard; G and NPT available to order), drain types, filter grades and gauge styles across the family. Rated flow is published as curves rather than a single figure, so ask us to confirm sizing and datasheet details against your application before ordering.
| Model | GFR400C15ALJC2 AirTAC Filter Regulator PT1/2, 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) |
On a CNC fixture line that clamps workpieces with air cylinders at reduced pressure, this low-pressure filter regulator cleans the supply, holds a gentle set pressure and shows it on the psi gauge, while the automatic drain keeps condensate out of the circuit.
On a cartoning or wrapping machine fed from a shared compressed-air ring main, this unit strips water and pipe scale at the 1/2 in drop and regulates the supply to the machine's actuators, with the automatic drain handling moisture between shifts.
On a distribution conveyor with pneumatic pushers, diverters and stoppers, this size 400 filter regulator conditions and regulates the air at the line drop, and the psi gauge lets maintenance verify set pressure at each station.
Choose the size 400 / PT1/2 step when your line's porting and flow demand sit above the 300 frame; larger sizes carry larger ports and more flow, and we can confirm the curve for your duty on request. The automatic drain on this unit suits unattended installations where condensate should be expelled without a operator round; manual and differential-pressure drains are alternatives in the family. The 40 um element is the standard grade (a 5 um W-grade element is available where finer filtration is needed), and the round psi gauge is the external gauge option in place of the embedded square gauge, with MPa or bar scales orderable. PT is the standard thread; G (BSPP) and NPT are order options. No mounting bracket is included with the J code. Because flow is published as curves rather than 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 GFR400 series as curves rather than a single rated figure, so we do not quote one number. Send us your line pressure, downstream pressure and expected air demand, and we will confirm the flow and datasheet figures for this exact model on request.
The A in the code specifies an automatic drain: condensed water collected in the polycarbonate bowl is expelled on its own, with no manual draining round. It suits unattended or multi-shift installations; manual and differential-pressure drain versions are available in the family if you prefer a different arrangement.
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.