The AirTAC GFR300C10AF2GK AirTAC Filter Regulator, G3/8, 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 GFR300C10AF2GK is a size-300 filter regulator: water and particulate filtration plus pressure regulation combined in one body, so a single unit conditions the air and holds your setpoint downstream. This configuration is built with a G3/8 (BSPP) port, an automatic drain that bleeds collected condensate without manual attention, a 40 um standard filter element, a square pressure gauge reading in psi, and a reverse/check valve fitted to hold downstream pressure if the supply drops. Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits size-300 units and a mounting bracket is included.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch. Within the series you can order alternative thread options (PT standard; G and NPT as order options), manual or differential-pressure drains, a 5 um element (code W), alternative gauge scales (MPa, psi or bar), and low-pressure or no-gauge variants. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application before ordering.
| Model | GFR300C10AF2GK AirTAC Filter Regulator, G3/8, 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. |
|---|---|
| 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) |
On a machining cell, this filter regulator sits on the drop feeding pneumatic clamps and vises: the 40 um element stops particulate reaching the clamp cylinders while the regulator holds a steady clamping pressure, and the check valve helps keep the clamp holding if shop air dips.
On a packaging or bottling line, the unit conditions the air feeding diverter gates, stoppers and pusher cylinders, with the automatic drain clearing condensate on a line that runs unattended across shifts and the psi gauge giving operators a visible setpoint.
On a lab or pilot-plant test bench, the regulator holds a repeatable test pressure for the rig while the filter keeps moisture and debris out of sensitive instruments and actuators, and the compact single-body GFR layout keeps the panel footprint small.
Start with the port step: size 300 carries a 3/8 inch port, and the G-series steps through sizes 200/300/400/600 as flow demand rises - match the size to the air consumption of the circuit rather than oversizing on port alone. Because flow is published as curves, not a single rating, send us your required flow and line pressure and we will confirm sizing against the datasheet before you order. Drain choice matters in practice: this unit has an automatic drain (code A), which suits unattended or elevated installations; manual and differential-pressure drains are available in the series if you prefer operator-controlled or load-proportional draining. The 40 um element fitted here is the standard grade; specify code W for the 5 um option where finer particulate removal is needed. The square gauge reads in psi; MPa and bar scales are alternatives. Thread is G (BSPP) on this unit - PT is the standard thread for the series, with G and NPT as catalogue options to order - and the mounting bracket is included.
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 G-series flow as curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number for this unit. Send us your required flow, working pressure and port size, and we will confirm the sizing against the datasheet on request before you order.
The A in the code specifies an automatic drain, which discharges collected condensate from the bowl without operator attention - useful for elevated, enclosed or unattended installations. The GFR series is also available with a manual drain or the differential-pressure drain (the series default), and the filter grade can be changed from the standard 40 um element to the 5 um option (code W) at order time.
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.