The AirTAC GFR300C08AJC2W AirTAC Filter Regulator PT1/4 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 AirTAC GFR300C08AJC2W is a GFR300-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is sized for 1/4 in PT ports, carries a 5 um filter element (the finer of the two catalogue grades), and an automatic drain that ejects collected condensate without manual attention. A round pressure gauge reading in psi is fitted, the regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, and no reverse/check valve is included. Maximum inlet pressure is 1.0 MPa (145 psi), the polycarbonate bowl suits the non-freezing -5 to 70 C operating window, and no mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and catalogue options include manual or differential-pressure drains, a 40 um standard element, embedded square or external round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads, a low-pressure regulator type and a reverse/check valve. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08AJC2W AirTAC Filter Regulator PT1/4 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 the cylinders that divert or stop cartons on a packaging conveyor: the 5 um element keeps solenoid valves clean while the regulator holds a steady downstream setting for repeatable cylinder action, and the automatic drain clears condensate between shifts.
Supplying clamping cylinders on a machining fixture, where the round psi gauge lets the operator read and hold the clamping pressure at the machine and the automatic drain keeps moisture out of the circuit across long production runs.
Point-of-use regulation for laboratory automation manifolds and small pneumatic actuators, where the 5 um grade and automatic drain protect sensitive components without requiring daily bowl checks at the bench.
Choose the size by port and flow: the 200, 300, 400 and 600 series step up from 1/8 to 1 in ports, and this 300 sits at PT1/4. Drain type is a real decision - automatic drain (this unit) empties the bowl on its own, manual drain relies on an operator, and the blank default is a differential-pressure drain. Filter grade is 40 um standard or 5 um (code W); this model carries the 5 um element for finer protection of downstream components. Gauges are an embedded square type as standard or an external round gauge in MPa, psi or bar scales - this one is a round psi gauge. Thread is PT as standard with G (BSPP) and NPT as order options, and a bracket can be specified where this no-bracket (J) configuration does not suit the install. Flow is published as curves, not a single rating, so send us your 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 GFR300 as curves rather than a single rated figure, so we do not quote one number. Send us your required flow and working pressure and we will confirm the sizing from the datasheet on request.
The A in the code sets the automatic drain: the bowl ejects collected condensate on its own, with no operator opening needed. Manual drain (M) requires routine attention, and the blank default is a differential-pressure drain. On this filter regulator with automatic drain, the regulation range is 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 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.