The AirTAC GFR300C08AC2WG AirTAC Filter Regulator G1/4 5 um 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 GFR300C08AC2WG is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at your setpoint. This 300-size unit is threaded G1/4 (BSPP) and carries a 5 um filter element (code W, against the 40 um standard), an automatic drain that ejects collected condensate without manual attention, and an external round gauge reading in psi. The regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, a mounting bracket is included, and no reverse/check valve is fitted. The polycarbonate bowl suits the -5 to 70 C (non-freezing) operating range, with a maximum inlet pressure of 1.0 MPa (145 psi).
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 options for manual or differential-pressure drains, 40 um or 5 um elements, embedded square or external round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads alongside the PT standard, and bracket or no-bracket mounting. 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 | GFR300C08AC2WG AirTAC Filter Regulator G1/4 5 um |
|---|---|
| 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 clean, moisture-reduced and pressure-stabilised air to the tool-clamp cylinders and workholding actuators on a machining centre, with the 5 um element protecting fine pilot components upstream of the machine's valve stack.
Conditioning the air that drives pick-and-place and sealing cylinders on a packaging conveyor line, where the automatic drain keeps condensate out of the cylinders on shifts that run without an operator at the air preparation point.
Providing filtered, regulated pilot air to automated process valves on a fluid-handling skid, with the psi round gauge giving operators a local setpoint reading at the panel.
Start with the size and port step: this unit is 300 size with a G1/4 port; larger sizes (400, 600) carry 3/4 and 1 inch ports for higher demand, so match the size against the flow curve rather than the port alone. Drain choice matters: automatic (this unit) suits unattended duty, manual (M) suits periodic checks, and the differential-pressure default (blank) drains on a pressure drop. Filter grade is 5 um here (code W) where finer particulate protection is needed; 40 um is the standard grade. The round gauge reads psi; the embedded square gauge and MPa or bar scales are the alternatives. Thread is G (BSPP); PT is the standard and G/NPT are order options. Bracket included, no check valve. Because flow is published as curves, not 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 the GFR300 series as curves, not as a single rated figure, so we do not quote a number here. Send us your flow and pressure requirements and we will confirm the datasheet figures for this exact model on request before you order.
The A in the code GFR300C08AC2WG means the bowl drain ejects collected condensate automatically, with no manual intervention - useful on unattended lines. The alternatives are manual drain (code M) and the differential-pressure default (blank). Note the regulation range follows the drain type: with automatic or differential-pressure drain it is 0.15-0.9 MPa (20-130 psi), while the manual-drain variant spans 0.05-0.9 MPa (7-130 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.