The AirTAC GFR300C08F2WT 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 AirTAC GFR300C08F2WT is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is ordered with a 1/4 in NPT port, a fine 5 um filter element (the standard element is 40 um; the W code selects the finer grade), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough, and an embedded square gauge reading in psi so the set pressure is visible at the unit. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi) with this drain type, maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). A mounting bracket is included and no reverse/check valve is fitted.
This is a genuine AirTAC part. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, a choice of differential-pressure, automatic or manual drain, 40 um or 5 um filtration, and gauge scale choices of MPa, psi or bar. Flow is published by AirTAC as curves rather than a single rated figure, so ask us to confirm the flow and datasheet figures for your application before ordering.
| Model | GFR300C08F2WT 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) |
Point-of-use conditioning on the supply line feeding a CNC machine's pneumatic tool clamps and chip-sweep nozzles: the 5 um element keeps fine particles out of the machine's valves while the regulator holds a steady set pressure for consistent clamping.
Mounted where the air drop feeds the stoppers, pushers and divertor cylinders on a packaging conveyor: clean, regulated air keeps the sequencing valves repeatable through the shift, and the psi gauge lets the line technician verify the setting at a glance.
Installed at individual workstations on an assembly floor where air tools and small actuators share one drop: the filter-regulator combination conditions and sets the pressure locally, so each station can be set independently of the main header.
Size and port: the 300 size steps up from the 200 series in both port and flow capacity; this unit carries a 1/4 in NPT port, and the next step is the 400 size with a larger port if your line needs more air. Drain: the differential-pressure drain used here needs no daily attention, but if your compressor cycles infrequently an automatic drain (code A) or a manual drain (code M) may suit the installation better. Filtration: the 5 um element fitted here is the finer of the two grades (40 um is standard) - choose it where downstream valves and instruments are sensitive to finer particles. Gauge: the embedded square gauge reads in psi; MPa and bar scales and an external round gauge are alternatives. Thread: PT is the AirTAC standard, with G (BSPP) and NPT as catalogue options - this unit is ordered in NPT. A mounting bracket is included.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so we do not quote a flow figure here. Send us your application details and we will confirm the 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 GFR family as curves rather than as a single rated figure, so we do not quote a flow number on the page. Tell us your inlet pressure, set pressure and expected air demand, and we will confirm the sizing against the datasheet curves before you order.
The W in the code selects the finer 5 um filter grade; 40 um is the standard element if you ever order a variant without it. This unit uses a differential-pressure drain: collected condensate is discharged automatically when the pressure drop across a loaded element rises, so there is no drain fitting to operate by hand. The regulator adjusts from 0.15 to 0.9 MPa (20-130 psi) with this drain type, and the embedded square gauge reads in 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.