The AirTAC GFR300C08ALF2WTK AirTAC Filter Regulator NPT1/4 5um 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 GFR300C08ALF2WTK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built on the GFR300 size with 1/4 in NPT ports, the finer 5 um filter element (code W; 40 um is the standard alternative), an automatic drain, and the low-pressure regulator type (code L). It carries the embedded square gauge on the psi scale, a reverse/check valve (code K) and a mounting bracket. The bowl on the 300 size is polycarbonate, 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 series is one of four sizes (200/300/400/600) with ports from 1/8 to 1 in and PT, G or NPT threads, plus a choice of drain type, filter grade, gauge scale and regulator type. Flow for this family is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C08ALF2WTK AirTAC Filter Regulator NPT1/4 5um |
|---|---|
| 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) |
Filter and regulate the air feeding pick-and-place cylinders and grippers on a packaging line: the 5 um element protects valve and seal surfaces, and the psi gauge lets operators set and verify line pressure at a glance.
Feed spray guns or coating heads on a finishing line where a low set pressure and clean air are the job; the low-pressure regulator type sets the circuit and the automatic drain clears condensate without daily manual draining.
Supply clamping fixtures and pneumatic hold-downs on a CNC cell, with the reverse/check valve fitted as coded and the included bracket giving a clean mounting point beside the machine manifold.
Size and port set the air capacity: GFR300 with 1/4 in NPT ports is the mid step in the range; step up to GFR400 or GFR600 for larger ports, or down to GFR200 for compact circuits. Because flow is published as curves rather than a single rating, send us your demand and we will confirm the right size from the datasheet before you order. Drain: this unit has the automatic drain (code A); manual (M) and differential-pressure (blank) versions exist. Filter grade: 5 um here (code W); 40 um is the standard element. The gauge is the embedded square type on the psi scale; MPa or bar scales and an external round gauge are options. Thread: NPT as ordered; PT is the standard and G (BSPP) is also a catalogue option. A bracket is included; the J code deletes it. The L code makes this the low-pressure regulator type, and its exact adjustment range is not published, so confirm it with us.
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 GFR-series flow as curves, not as a single rated figure, so we do not quote a number here. Send us your inlet pressure and air demand and we will confirm the sizing and the datasheet figures on request.
The A code in this model fits the automatic drain, which discharges collected condensate from the polycarbonate bowl without daily manual attention. Manual (code M) and differential-pressure (blank) drain versions are available in the same family if you prefer a different arrangement.
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.