The AirTAC GFR300C08JF3TK AirTAC Filter Regulator NPT1/4, 40 um 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 GFR300C08JF3TK is a filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at a set point. This size 300 unit has a 1/4 in NPT port, a 40 um standard filter element, a differential-pressure drain (the catalogue default), and a standard regulator with a 0.15-0.9 MPa (20-130 psi) adjustment range. Maximum inlet pressure is 1.0 MPa (145 psi), the embedded square gauge reads in bar, a reverse/check valve is fitted, the polycarbonate bowl suits non-freezing air from -5 to 70 C, and no mounting bracket is included in this configuration.
This is a genuine AirTAC part. GFR filter regulators are published in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, manual, automatic or differential-pressure drains, a 5 um element option (code W), gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so we confirm flow and other datasheet figures on request.
| Model | GFR300C08JF3TK AirTAC Filter Regulator NPT1/4, 40 um |
|---|---|
| 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) |
Filtering and regulating the shop-air drop that feeds clamps, tool changers and air-blast nozzles on a machining centre, keeping the set pressure stable through the shift.
Supplying clean, regulated air to sealing jaws and pick-and-place cylinders on a carton or bagging line, with the fitted check valve helping hold the set point when upstream pressure dips.
A compact filter regulator at a workshop air bench, giving technicians a bar-referenced set point for air tools, blow guns and small test rigs on a 1/4 in drop.
Choose the size and port against the air your line consumes: this unit is size 300 with a 1/4 in NPT port, one step in the 200/300/400/600 range where larger sizes carry larger ports and more flow. Pick the drain to match maintenance routines: differential-pressure here, automatic (A) for unattended draining, or manual (M) for scheduled draining. The 40 um element is standard; specify the W code for a 5 um element where finer filtration is needed. The gauge scale on this model is bar, with MPa and psi scales and an external round gauge available as options. Thread is NPT here; PT is the standard thread and G is also orderable, all as specification choices. This configuration is supplied without a mounting bracket. 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.
AirTAC publishes flow for the GFR300 as curves rather than a single rated figure, so no rated flow number is quoted here. Send us your line pressure, set pressure and expected air demand, and we will confirm the sizing from the datasheet on request.
This unit carries the standard 40 um element, which removes water and particulate at that grade. A 5 um element is available as the W code option within the same GFR family; ask for it when the application needs finer filtration.
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.