The AirTAC GFR300C15AF2K AirTAC Filter Regulator PT1/2 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 GFR300C15AF2K is a filter regulator: water and particulate filtration plus downstream pressure regulation combined in one body. This size 300 unit carries a PT1/2 (1/2 in) PT thread port, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element, and an embedded square gauge reading in psi. A reverse/check valve is fitted, the standard regulator covers a 0.15-0.9 MPa (20-130 psi) adjustment range, and a mounting bracket is included. The polycarbonate bowl suits non-freezing compressed-air service from -5 to 70 C, with a maximum inlet pressure of 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options including manual or differential-pressure drains, a 5 um element (code W), alternative gauge scales in MPa or bar, G (BSPP) or NPT threads, and low-pressure regulator variants. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet for your application before ordering.
| Model | GFR300C15AF2K AirTAC Filter Regulator PT1/2 |
|---|---|
| Series | GFR300 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.
| GFR300 | G-series filter regulator, 300 body — sets the port range. |
|---|---|
| C1 | Port size See datasheet. This body offers 08 = PT1/4", 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 | GFR300 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Mounted at the drop feeding a CNC machine's pneumatic valves and clamps, it removes water and chips of particulate from the shop air, holds a steady regulated pressure to the machine's air circuit, and its automatic drain keeps condensate off the bowl floor through unattended shifts.
On a carton-forming and sealing line, the unit conditions the air feeding the conveyor stoppers and box-eject cylinders: the 40 um element screens pipe-scale and rust, the regulator holds the setting the cylinder circuit was designed around, and the psi gauge lets line staff verify pressure at a glance.
At a 1/2 in branch take-off serving a row of assembly-cell air tools and actuators, the filter-regulator pair cleans and regulates the supply in one body, the reverse/check valve holds the downstream setting if upstream supply dips, and the included bracket fixes the unit to the cell's prep panel.
Start with the port step: size 300 with a PT1/2 (1/2 in) port suits lines plumbed at 1/2 in, while larger 400/600 units or smaller 200 units step port and body size up or down. Choose the drain to match attendance: automatic (this unit) empties the bowl unattended, manual suits supervised points, and differential-pressure drain is the catalogue default. The 40 um element is standard; specify the 5 um W grade where finer particulate removal matters. The embedded square gauge here reads psi; MPa and bar scales and an external round gauge are order options. PT thread is the standard; G (BSPP) and NPT are orderable thread options, and a bracket is included with this unit.
Because flow is published as curves rather than a single rated figure, we do not quote a flow number here. Send us your application's flow and pressure requirements and we will confirm sizing against the datasheet before you order.
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 state a flow number here. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request before you order.
The A in the code specifies an automatic drain, which expels collected condensate from the bowl without anyone opening it - useful at unattended or hard-to-reach points. The same GFR300-15 unit can be ordered with a manual drain or the differential-pressure drain default, and with a 5 um element (code W) if you need finer filtration than the standard 40 um.
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.