The AirTAC GFR300C08JF2T AirTAC Filter Regulator 1/4 in NPT 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 GFR300C08JF2T is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air with the standard 40 um element, then regulates downstream pressure over 0.15-0.9 MPa (20-130 psi). This configuration carries a 1/4 in NPT port, a differential-pressure drain (the standard drain option), an embedded square gauge reading in psi, a polycarbonate bowl, and no mounting bracket fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR300 sits in the GFR size range of 200, 300, 400 and 600, with options including a 5 um element (code W), automatic or manual drains, G (BSPP) or NPT thread variants, gauge scales in MPa, psi or bar, an external round gauge, a reverse/check valve, and a mounting bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C08JF2T AirTAC Filter Regulator 1/4 in NPT |
|---|---|
| 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) |
Clean, regulated air for the tool-clamp and chip-clearing circuits of a CNC machining centre, with the psi gauge giving operators a familiar local pressure readout at the machine.
Feeding the diverters, pushers and stopper cylinders on a packaging conveyor line, where the 40 um element keeps water and debris out of the directional valves.
Conditioning the air supply to filler and capper valve clusters in a bottling plant, holding a stable set pressure despite demand swings across the fill cycle.
Choose the GFR300 size and 1/4 in port to match your line's flow demand - step up to size 400 or 600 when the circuit needs a larger port. Decide the drain: differential-pressure (this unit, the standard), automatic for unattended condensate discharge, or manual where someone checks the bowl routinely. The 40 um element suits general plant air; specify the 5 um W grade where downstream valves and instruments need finer filtration. Gauge scale here is psi; MPa and bar scales are available, and an external round gauge is an option. This unit is NPT threaded; PT (standard) and G (BSPP) versions exist in the catalogue, and a mounting bracket can be added if the unit will not be picked up by connected pipework.
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 GFR300 as curves, not as a single rated figure, so there is no honest one-number answer we can state. Send us your application details and we will confirm the flow and datasheet figures for this exact 1/4 in NPT configuration on request.
The differential-pressure drain is the standard option: it discharges condensate when the pressure difference across the bowl reaches the drain's threshold. If you want continuous unattended discharge, choose the automatic drain (code A); if maintenance staff inspect the bowls routinely, the manual drain (code M) is available. Note the regulation range differs by drain type: differential-pressure and automatic drain units regulate 0.15-0.9 MPa (20-130 psi), while manual drain units regulate 0.05-0.9 MPa (7-130 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.