The AirTAC GFR400C15AJC2G AirTAC Filter Regulator G1/2, Auto Drain 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 GFR400C15AJC2G is a size 400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in one body. This configuration carries a G1/2 (BSPP) port, a 40 um standard filter element, an automatic drain that expels collected condensate without manual attention, and an external round gauge reading in psi. The standard regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the unit is rated for a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C (non-freezing). The polycarbonate bowl suits this size, and the unit is supplied without a mounting bracket (a bracket is available as an option).
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200/300/400/600) spanning the port range from 1/8 to 1 inch, with manual or differential-pressure drains, a 5 um (code W) element option, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads as order options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C15AJC2G AirTAC Filter Regulator G1/2, Auto Drain |
|---|---|
| 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 clean, regulated air to the cylinders of a workholding press or clamp fixture, where the 1/2 in port and 0.15-0.9 MPa adjustment hold consistent clamping force and the automatic drain keeps condensate out of the valve stack.
Supplying regulated air to diverters, fillers and case-packing actuators on a packaging line, with the 40 um element protecting directional valves and the psi gauge giving operators a visible setpoint check at the machine.
Providing filtered, regulated air to quarter-turn pneumatic valve actuators on a process skid, where the automatic drain suits an out-of-the-way mounting point and the round psi gauge supports setpoint verification during commissioning.
Step up or down through the GFR sizes (200/300/400/600) so the port - here G1/2 - matches your line size and the flow curve covers your demand; we can confirm curve figures against your application before you order. This unit pairs an automatic drain (best where the unit is hard to reach or condensate loads are steady) with the 40 um standard element; choose the 5 um W element if downstream valves or instruments need finer filtration. The external round gauge here reads psi; square embedded gauges and MPa or bar scales are alternatives. Thread is G (BSPP) - PT is the standard and NPT is an order option - and a mounting bracket can be added since this configuration ships without one.
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 one number. Tell us your line pressure and expected air demand and we will confirm the curve figures from the datasheet for your application before you order.
The A in the code specifies an automatic drain, which expels collected condensate by itself - useful where the unit is mounted out of reach. The GFR400 series is also available with a manual drain or the differential-pressure (blank) default, and the regulation range for the automatic-drain version is 0.15-0.9 MPa (20-130 psi).
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.