The AirTAC AirTAC GFR300C10ALF2W Filter Regulator PT3/8, 5 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 GFR300C10ALF2W is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 5 um filtration element (code W), an automatic drain that ejects collected condensate without manual attention, and a low-pressure regulator type for circuits set below standard working ranges. The embedded square gauge reads in psi, the port is PT3/8 (3/8 in, PT thread standard), a mounting bracket is included, and the polycarbonate bowl suits the 300 size. 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 from the GFR300 series. The family is also available in the standard 40 um grade, with differential-pressure or manual drain, alternative gauge scales (MPa, psi or bar), and G (BSPP) or NPT threads as order options. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | AirTAC GFR300C10ALF2W Filter Regulator PT3/8, 5 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. |
|---|---|
| C1 | 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-C1 (two-unit set) |
On a cartoning or case-packing line, clamp cylinders and hold-down pads often run at reduced settings. This low-pressure-type filter regulator cleans the supply, holds the set pressure for consistent clamping, and its automatic drain keeps condensate out of valves on a line that runs unattended.
Spray guns in a finishing booth need clean, dry air at a steady, moderate setting. The 5 um element catches fine particulate before the gun, the regulator holds the set point while the operator sprays, and the psi square gauge gives a direct readout at the booth wall.
On a CNC machining centre feeding pneumatic tool changers, clamps and chip doors, this unit filters water and swarf-laden shop air to 5 um, regulates the supply to the machine's requirement, and the automatic drain protects the bowl from filling during long unattended cycles.
Start with the port step: the 300 size with a 3/8 in PT port sits mid-range in the GFR ladder (200, 300, 400, 600), so match it to your line size and required air delivery - we can check the published flow curve against your demand before you order. Choose the drain to suit access: this unit has an automatic drain, ideal for points that are hard to reach or run unattended; differential-pressure (default) and manual drains are also available in the series. The 5 um element here is the finer option; the standard grade is 40 um where general air prep is enough. The fitted square gauge reads psi; MPa or bar scales and an external round gauge are order options. PT is the standard thread - specify G (BSPP) or NPT when ordering if your pipework needs it. A mounting bracket is included with this configuration. Because flow is published as curves, not a single rating, 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 series as curves, not as a single rated number, so we do not quote a figure that could mislead your sizing. Tell us your line pressure, downstream demand and acceptable pressure drop, and we will confirm the relevant flow-curve figures from the datasheet on request before you order.
W is the filter-grade code: this unit carries a 5 um element, the finer option in the GFR300 series. The standard grade is 40 um, which suits general air preparation where only coarse particulate and bulk water are a concern. Choose 5 um where downstream equipment - spray guns, precision valves, instrumentation - needs cleaner air; both grades fit the same automatic-drain, low-pressure configuration shown here.
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.