The AirTAC GFR300C15AF2G AirTAC Filter Regulator G1/2 Square Gauge, psi 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 GFR300C15AF2G is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a G1/2 (BSPP) port, an automatic drain that ejects collected condensate without manual attention, a 40 um standard filter element, and an embedded square gauge reading in psi. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi) with a maximum inlet pressure of 1.0 MPa (145 psi), and the unit operates from -5 to 70 C (non-freezing). The size-300 bowl is polycarbonate (PC), and a mounting bracket is included; no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and is available with manual or differential-pressure drains, a 5 um element (code W), alternative gauge scales (MPa/psi/bar), and PT 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 before ordering.
| Model | GFR300C15AF2G AirTAC Filter Regulator G1/2 Square Gauge, psi |
|---|---|
| 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) |
Feeding impact wrenches, nutrunners and air ratchets on an assembly line: the 40 um element strips water and pipe scale before they reach the tools, while the regulator holds a steady set pressure so torque tools behave consistently shift after shift.
Supplying the stopper cylinders, pushers and gating actuators on a packaging or bottling conveyor: clean, regulated air keeps cylinder cycling repeatable, and the automatic drain copes with condensate on a line that runs unattended for long stretches.
Preparing air for quarter-turn valve actuators and positioners on a process skid: the regulator sets the actuator's operating pressure precisely, the 40 um element protects the positioner's internal passages, and the psi gauge gives operators a direct local readout.
Size and port set the air capacity: step up from 200 to 600 as your port size and flow demand grow - this size-300 unit with its G1/2 port suits mid-range supply lines. Choose the drain to match access: automatic (this model) suits enclosed or infrequently visited installations, manual suits attended points where you want positive control, and differential-pressure draining is the default. The 40 um element is standard; specify the 5 um (W) option where finer particulate removal matters. Gauge scale is selectable (MPa, psi or bar - this unit reads psi), and thread comes as PT (standard), G or NPT to order. Bracket is included on this model. Because flow is published only as curves and not as a single rating, send us your application details 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 GFR300 series as curves, not as a single rated figure, so we do not quote a number. Send us your application details - line pressure, set pressure and expected air demand - and we will confirm the flow figures from the datasheet so you can size the unit correctly before ordering.
The automatic drain ejects collected condensate from the bowl on its own, which suits installations that are enclosed, elevated or simply not visited daily. If you prefer positive control at an attended point, the same size-300 filter regulator is also available with a manual drain or the differential-pressure default - just ask for the alternative code.
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.