The AirTAC GFR300C08AF2TK AirTAC Filter Regulator, NPT1/4, 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 GFR300C08AF2TK is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This size 300 unit has a 1/4 in NPT port, a 40 um filter element, an automatic drain on the polycarbonate bowl, an embedded square gauge scaled in psi, and a reverse (check) valve fitted; the mounting bracket is included. Regulated pressure is adjusted across 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating range of -5 to 70 C (non-freezing).
It is a genuine AirTAC part from the GFR300 filter-regulator series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in up to 1 in, and options including 5 um filtration (code W), manual or differential-pressure drains, MPa or bar gauge scales, G (BSPP) or NPT threads, and no-gauge or no-bracket variants. Flow is published as curves rather than a single rating, so ask us to confirm flow and datasheet figures for your application.
| Model | GFR300C08AF2TK AirTAC Filter Regulator, NPT1/4, 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. |
|---|---|
| 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) |
Filtered, regulated air for the pick-and-place cylinders and grippers on a carton-forming and sealing line, with the automatic drain clearing bowl condensate between shifts.
Steady regulated pressure for the air cylinders that divert cartons between lanes on a distribution-centre conveyor, with 40 um filtration protecting the valves upstream of each actuator.
Clean, regulated air at a service-bench drop for impact wrenches, blow guns and tyre inflators, with the psi-scaled square gauge read at a glance during setup.
Choose the size by the port and flow step: sizes 200, 300, 400 and 600 map to ports from 1/8 in up to 1 in, and this unit sits at size 300 with a 1/4 in NPT port. The real choices on this series: drain type (automatic as fitted here, or manual, or the differential-pressure default), filter grade (40 um standard, 5 um with code W), gauge scale (psi here; MPa or bar available) and gauge style (embedded square standard, external round optional), thread (PT is the standard; G and NPT are order options), and bracket (included unless code J). The reverse/check valve (K) is fitted on this unit. Flow is published as curves, not a single rating, so 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.
Flow for the GFR300 series is published as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, downstream demand and port size, and we will confirm the flow and full datasheet figures for this unit on request before you order.
This unit carries code A for an automatic drain, which expels collected condensate from the bowl without daily attention. Manual (M) and differential-pressure (blank) drains are catalogue options on the same series. With the automatic drain fitted, the regulator adjustment range is 0.15-0.9 MPa (20-130 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.