The AirTAC GFR300C08AF2WG AirTAC Filter Regulator G1/4 5um 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 GFR series is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body, so one unit does the job of a filter and a regulator without a second component in the line. This configuration, GFR300C08AF2WG, is a size 300 unit with a G1/4 (BSPP) port, a 5 um filtration element (the finer W grade; 40 um is the standard element), an automatic drain that ejects collected condensate without manual attention, and a standard-type regulator with an adjustment range of 0.15-0.9 MPa (20-130 psi). An embedded square gauge with a psi scale is fitted for setting and monitoring downstream pressure, and no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the medium is compressed air only. The size 300 bowl is polycarbonate (PC).
This is a genuine AirTAC part. The GFR300 size sits in a family spanning sizes 200, 300, 400 and 600, with 40 um or 5 um elements, differential-pressure, automatic or manual drains, square or external round gauges scaled in MPa, psi or bar, PT (standard), G or NPT threads, and bracket mounting options. Flow is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR300C08AF2WG AirTAC Filter Regulator G1/4 5um Auto Drain |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Feeding filtered, regulated air to the cylinder circuit of a small pneumatic assembly or stamping press, where the 5 um element protects valve spools and the regulator holds a consistent clamping pressure.
Conditioning the supply to packaging and cartoning lines, where pick-and-place cylinders and diverters need clean air and a stable set pressure to keep cycle behaviour repeatable through a shift.
Point-of-use treatment ahead of spray guns or air tools in a finishing cell, where the 5 um grade and automatic drain keep water carry-over out of the finish without an operator draining a bowl each shift.
Choose the size and port step against the air consumption of the machine downstream: sizes 200, 300, 400 and 600 step up in port and flow capacity, and this unit is size 300 with a G1/4 port. Pick the drain to suit attendance on site: automatic (this unit) drains condensate by itself, manual drain relies on an operator, and the differential-pressure default drains on a pressure drop. Pick the element grade for the sensitivity of what you are feeding: 40 um for general protection, 5 um (code W, this unit) for finer downstream equipment. Gauge scale (MPa, psi or bar - psi here) and thread (PT standard, G or NPT to order) are decodable choices, and a mounting bracket is included with this unit. Because flow is published as curves and not as a single rating, 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 series as curves rather than a single rated figure, so we do not quote one number. Tell us your port size and application and we will confirm the flow figures from the datasheet on request before you order.
This unit carries drain code A, an automatic drain that ejects collected condensate from the bowl on its own. The alternatives in the series are manual drain (code M), which needs an operator to drain it, and the differential-pressure default. Automatic suits installations that run unattended or where a missed manual drain would risk water reaching downstream equipment.
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.