The AirTAC GFR300C10AJC2GK AirTAC Filter Regulator G3/8 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 GFR300C10AJC2GK is an AirTAC GFR300 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This configuration is size 300 with a G3/8 (BSPP) port, a 40 um standard filter element and an automatic drain that bleeds collected condensate without manual attention. The regulator is the standard type with an adjustment range of 0.15-0.9 MPa (20-130 psi), and an external round gauge with a psi scale is fitted so the set pressure can be read directly. A reverse/check valve is included, and the unit is supplied without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing); the medium is compressed air only.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and is orderable with manual, automatic or differential-pressure drains, a 5 um (code W) or 40 um element, embedded square or external round gauges in MPa, psi or bar scales, G or NPT threads in place of the PT standard, and with or without a bracket. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C10AJC2GK AirTAC Filter Regulator G3/8 |
|---|---|
| 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) |
Point-of-use conditioning for a carton-sealing or wrapping machine: the 40 um element strips water and pipe-scale from the plant air ring main, the regulator holds a steady supply pressure to the machine's cylinders and valves, and the automatic drain copes with condensate where nobody opens a bowl each shift.
Feeding tool-clamp, chip-blow-off and spindle-air-seal circuits on a machining centre: the filter-regulator cleans the incoming compressed air and sets the clamping pressure at the machine, with the psi gauge letting maintenance verify the setting at a glance and the check valve holding the circuit if supply pressure dips.
Conditioning the air that drives conveyor gate cylinders, reject pushers and stopper gates on a filling line: the GFR300 removes moisture and debris before it reaches the valves, the regulator keeps actuator forces consistent between shifts, and the automatic drain suits a wet compressor room with washdown humidity.
Start with the port and size: this unit is size 300 with a G3/8 port, one step up from 1/4 in the GFR range; if your line may grow, stepping up a size gives more flow capacity, but the right check is to match the size step against the flow your circuit needs. Drain choice matters in practice: the automatic drain fitted here suits unattended or hard-to-reach installations, while manual and differential-pressure drains are the other catalogue options. The 40 um element is the standard grade for general plant air; choose the 5 um (W) version where finer particulate removal is needed. The fitted round gauge reads in psi - square embedded gauges and MPa or bar scales are also available. This unit carries a G (BSPP) thread; PT is the standard thread and NPT is an order option. Note the reverse/check valve is fitted (code K) and no bracket is included (code J), so plan the mounting accordingly. Because flow is published as curves rather than 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 GFR series as characteristic curves, not as a single rated number, so we do not quote a l/min or SCFM figure here. Send us your application - port size, downstream consumption and acceptable pressure drop - 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 operator action - useful for units mounted high, in pits or on unattended lines. The catalogue alternatives are a manual drain (you open it yourself) and a differential-pressure drain (the default). All three are orderable across the GFR sizes, along with the 5 um (W) filter grade if 40 um is not fine enough.
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.