The AirTAC AirTAC GFR300C10AF1TK Filter Regulator, NPT 3/8 in 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 GFR300C10AF1TK is a size-300 filter regulator: one body that removes water and particulate down to 40 um and then regulates downstream pressure over 0.15-0.9 MPa (20-130 psi). It is piped in 3/8 in NPT, fitted with an automatic drain so collected condensate is expelled without manual intervention, an embedded square gauge scaled in MPa for setting the outlet pressure, and a built-in reverse (check) valve that helps hold the downstream setting if the upstream supply is lost. The polycarbonate bowl is mounted with the included bracket, and the maximum inlet pressure is 1.0 MPa (145 psi) with a working temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR300 series. The GFR family is offered in sizes 200, 300, 400 and 600 with a choice of ports, thread options (PT standard, with G and NPT as order options), drain types, 40 um or 5 um filtration, gauge styles and scales, and an optional reverse valve. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | AirTAC GFR300C10AF1TK Filter Regulator, NPT 3/8 in |
|---|---|
| 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) |
Installed ahead of the directional valves on a workshop press, it strips water and 40 um particles from the shop-air drop and holds a steady regulated pressure to the cylinder circuit, with the check valve maintaining the setting during supply dips.
Mounted at the take-off feeding the stopper and pusher cylinders on a packaging conveyor, it removes condensate carried over from the main line and lets the operator set a stable working pressure for consistent cylinder action.
Used as the conditioning stage on a laboratory automation rig, it delivers clean, dry-ish air at a repeatable setpoint to actuators and air bearings, with the MPa gauge giving a clear reference and the auto drain keeping the bowl clear between runs.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a 3/8 in NPT port, one step up from 1/4 in and one step down from 1/2 in. Drain type is a real choice - automatic (as fitted here) for unattended condensate removal, manual where you want controlled dumping, or differential-pressure as the default style. Filtration is 40 um standard; specify the W option for 5 um where finer pre-filtration is needed. The embedded square gauge is standard and scales can be ordered in MPa, psi or bar; thread is PT as standard with G and NPT as order options, and a bracket is included (J deletes it).
Because AirTAC publishes flow as curves rather than a single rated figure, we do not quote a flow number here. Send us your application details and we will confirm sizing against the datasheet curves 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 series as curves, not as a single rated number, so we do not quote a figure here. Tell us your line pressure and the air demand of your equipment and we will confirm the sizing from the datasheet curves on request before you order.
The A in the code is the automatic drain: condensate collected in the polycarbonate bowl is expelled on its own, so the unit suits installations that are not checked daily. The K is a built-in reverse (check) valve, which helps hold the regulated downstream pressure if the upstream supply is interrupted. If you prefer a manual or differential-pressure drain, or no check valve, those are available as alternative GFR300 order codes.
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.