The AirTAC GFR400C15ALF2 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 GFR400C15ALF2 is an AirTAC GFR400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in one body. This size 400 unit is ported PT1/2 (PT thread standard; G and NPT are order options), carries a 40 um filter element, and has an automatic drain that discharges collected condensate without manual attention. The regulator is the low-pressure type, intended for circuits set below the standard type's adjustment range; the exact range is not published, so confirm it with us. A square gauge reading in psi is fitted to the body, the bowl on the size 400 frame is polycarbonate, a mounting bracket is included, and no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um element option (code W), gauge scales in MPa, psi or bar, and G or NPT threads to order. Flow is published as curves rather than a single rated figure, so send us your application and we will confirm the sizing and full datasheet figures on request.
| Model | GFR400C15ALF2 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) |
Filtered, pressure-regulated air to pneumatic swing clamps and cylinders on a welding fixture, where the clamp circuit runs at a lower set pressure than the plant main and the automatic drain keeps condensate out of the valve bank.
Point-of-use conditioning for a cartoning or filling machine's air actuators: the 40 um element and automatic drain protect directional valves and cylinders, and the regulator holds a steady low set pressure for consistent sealing and forming.
Regulated low-pressure air to gripper actuators and venturi circuits on an assembly-cell manipulator, with the square psi gauge giving operators a local set-point readout at the cell and the bracket allowing panel mounting beside the manifold.
Choose the size and port against the flow your line needs: size 400 with a PT1/2 port sits one step above 300 and below 600 in the GFR range, and the published flow curves - not a single rating - are the honest way to size it, so ask us to check the curve against your air consumption before ordering. This unit is already fixed for drain (automatic), element (40 um; a 5 um W version exists if finer filtration is needed), gauge (square, psi scale) and regulator type (low-pressure), with the mounting bracket included.
Thread is PT as standard; G (BSPP) and NPT are catalogue options to order. If your regulated pressure sits within the standard adjustment range rather than below it, the standard-type GFR400 in the same port is the like-for-like alternative.
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, not a single rated number, so we do not quote a l/min or SCFM figure. Send us your working pressure and air consumption and we will confirm the flow from the datasheet on request.
The L code means the regulator is the low-pressure type, intended for circuits set below the standard type's adjustment range; the exact range is not published, so confirm it with us. The A code is the automatic drain: condensate collected in the polycarbonate bowl is discharged without manual intervention. Maximum inlet pressure is 1.0 MPa (145 psi) and the temperature range is -5 to 70 C, non-freezing.
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.