The AirTAC GFR400C15ALC2GK AirTAC Filter Regulator G1/2 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 GFR400C15ALC2GK is a size 400 filter regulator: water and particulate filtration plus pressure regulation in a single body. This configuration carries a G1/2 (BSPP) port, the standard 40 um filter element, an automatic drain that discharges collected condensate from the polycarbonate bowl without manual attention, and a low-pressure regulator type. A round gauge scaled in psi is fitted so downstream pressure can be read directly, a reverse/check valve is fitted, and the mounting bracket is included. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, drain types (differential-pressure, automatic or manual), a 5 um element option (code W), gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15ALC2GK AirTAC Filter Regulator G1/2 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) |
Feeds a clamping or holding circuit that is set to run below normal line pressure, with the fitted psi gauge letting the setter read and verify the reduced pressure at the station.
Conditions the air feeding cylinders and actuators along a packaging conveyor, filtering water and particulate from the shop supply while holding a steady regulated pressure for consistent box forming and sealing.
Sits at the machine inlet to remove condensate and dirt from the compressed air feeding tool-change cylinders and pneumatic clamps, with the automatic drain keeping the bowl clear during unattended shifts.
Start with the size and port step: sizes 200, 300, 400 and 600 correspond to increasing port sizes and flow capacity, so match the size to the air demand of the circuit rather than only to the existing pipe thread. For this unit the step is size 400 with a G1/2 port. Next, choose the drain: automatic (this unit) discharges condensate by itself, manual requires operator action, and differential-pressure draining is the catalogue default. Choose the 40 um standard element for general air preparation or the 5 um option (code W) for finer filtration. Gauge scale (MPa, psi or bar) and thread family (PT standard, G or NPT to order) are the remaining decodable choices, along with the bracket option. Because flow is published as curves and not as a single rating - and the adjustment range of the low-pressure type is not published - 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 this family as curves, not as a single rated number, so there is no one figure we can honestly quote. Tell us your application and we will confirm the relevant flow and datasheet figures on request before you order.
The A in the code means the bowl is fitted with an automatic drain, so collected condensate is discharged without an operator having to open a manual drain. The catalogue also offers manual draining and a differential-pressure drain as the default, so a different drain type can be selected when ordering. Note this is a low-pressure regulator type, and its adjustment range is not published in the catalogue - confirm it with us on request.
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.