The AirTAC GFR300C08ALC1WT AirTAC Filter Regulator NPT1/4 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 GFR series combines a water-and-particulate filter with a pressure regulator in a single body, so one unit both cleans the compressed air and sets its pressure. This GFR300C08ALC1WT is the size 300 unit with 1/4 in NPT ports, a 5 um filter element (the W grade, finer than the 40 um standard), an automatic drain that discharges condensate from the metal bowl without manual attention, and the low-pressure (L) regulator type. It carries a round pressure gauge with an MPa scale, includes a mounting bracket, and is rated for a maximum inlet pressure of 1.0 MPa (145 psi) at -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR300 size sits in a family spanning sizes 200, 300, 400 and 600, with port sizes from 1/8 to 1 in, PT as the standard thread and G or NPT as order options, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, and square or round gauges in MPa, psi or bar scales. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08ALC1WT AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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, low-pressure regulated air for the clamping cylinders and fixtures around a machining centre, with the 5 um element protecting the clamp valves from particulate and water.
A low set pressure and 5 um filtered air at the paint-gun line, with the automatic drain clearing condensate from the metal bowl between shifts.
Regulated supply for the divert and pusher cylinders on a packaging conveyor, where the automatic drain keeps condensate out of the line without daily manual draining.
Choose the size and port step against the air your application needs: this unit is size 300 with 1/4 in NPT ports, and the larger sizes (400, 600) carry bigger ports and more flow capacity, though exact flow is published only as curves. Filtration here is the 5 um W grade - choose it where downstream valves and instruments need finer air than the 40 um standard element provides. The automatic drain suits lines that run unattended; manual and differential-pressure drains are the alternatives in the family. The gauge on this unit is the external round type with an MPa scale (psi and bar scales are options), and the regulator is the low-pressure L type - confirm its adjustment range with us before ordering. Thread is NPT here; PT is the standard and G (BSPP) is also available to order, and a mounting bracket is included. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application 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 size as curves, not as a single rated number, so we do not quote a figure here. Send us your application details and we will confirm the datasheet curve and sizing before you order.
It marks the low-pressure regulator type. The adjustment range for this variant is not published in the sheet we work from, so we confirm the exact range on request; the unit otherwise carries a 5 um element, automatic drain, round MPa gauge and a mounting bracket.
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.