The AirTAC GFR300C08ALF1WT 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 GFR300C08ALF1WT is a filter regulator: water and particulate removal plus pressure regulation combined in one body, with a drain bowl and no lubricator. This configuration is built for a 1/4 in NPT port in the 300 size, carries the 5 um filtration grade (the W code, instead of the 40 um standard) and drains condensate automatically, so the bowl empties itself during operation. The regulator is the low-pressure type; its exact setpoint range is not published, and we confirm it from the datasheet on request. An embedded square gauge graduated in MPa is fitted, a metal bowl is used, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of differential-pressure, automatic or manual draining, 40 um or 5 um filtration, standard or low-pressure regulation, gauge options and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR300C08ALF1WT 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) |
Air supply for pneumatic clamping fixtures that hold workpieces at reduced pressure: the 5 um element keeps fines out of the clamp cylinders, the automatic drain clears condensate before it reaches the fixtures, and the low-pressure regulator holds a gentle setting.
Feeding gate, divert and pusher cylinders on a packaging conveyor: the regulator keeps a stable low setting for soft actuation while the 5 um grade and auto-draining bowl protect the directional valves from moisture and particulate.
Supplying low-pressure air to bench-scale reactors, sampling panels and laboratory test rigs where finer-than-standard filtration, automatic condensate draining and a setting below the standard regulator range are wanted.
Size and port: the 300 size with a 1/4 in NPT port sits mid-range in the GFR family - step to 200, 400 or 600 as your piping and air demand dictate, and match the thread to your line (PT is the standard thread, with G and NPT as catalogue options). Drain: this unit drains automatically, so no manual attention to the bowl is needed; differential-pressure and manual versions exist if you prefer a different arrangement. Filtration: the 5 um element (W code) gives finer protection than the 40 um standard - choose per the sensitivity of the downstream valves and cylinders. Gauge: the fitted square gauge reads in MPa, with psi or bar scales and an external round gauge available as options. A mounting bracket is included.
Sizing honesty: AirTAC publishes flow for this series as curves, not a single rated number, and the exact range of the low-pressure regulator is not published. Send us your flow and pressure targets and we will confirm suitability from 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 series as curves rather than a single rated figure, so we do not quote a number here. Ask us to confirm the flow and the full datasheet for GFR300C08ALF1WT against your application before ordering.
The W code in the model sets the 5 um element in place of the 40 um standard. Choose 5 um where downstream valves and cylinders need finer protection; 40 um suits general water and particulate removal. Both grades are catalogue options in the GFR family, and this unit also drains its bowl automatically.
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.