The AirTAC GFR30008AF2WG AirTAC Filter Regulator G1/4 5um Auto Drain is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/4" ports, a automatic 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 GFR300 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body, so one unit does the job that would otherwise need a separate filter and regulator. This configuration carries a G1/4 (BSPP) port, a 5 um filtration element for finer particle capture than the standard 40 um grade, an automatic drain that expels collected condensate without manual attention, an embedded square gauge reading in psi, the standard regulator type, and a mounting bracket. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and offers drain types (differential-pressure, automatic, manual), filter grades (40 um standard, 5 um optional), gauge scales (MPa, psi, bar) and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range for this configuration is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rated figure, so we confirm datasheet and sizing figures on request.
| Model | GFR30008AF2WG AirTAC Filter Regulator G1/4 5um Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/4" (G (BSPP) thread) |
| Filtering grade | 5 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, psi 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. |
|---|---|
| 08 | Port size PT1/4". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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 · PT1/4" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-08 (two-unit set) |
Feeds clean, regulated air to tool-clamp and pallet-change cylinders on a machining centre, with the 5 um element guarding precision valves and the automatic drain keeping condensate off the machine bed.
Sits at the drop to a packaging machine's tape-head and flap-fold cylinders, holding a steady set pressure for consistent seal actuation while the auto drain copes with humid summer shop air.
Regulates supply pressure to a robot cell's gripper and vacuum-generator manifold, with the psi square gauge giving operators a local setpoint readout at the cell.
Start with the port step: GFR sizes 200, 300, 400 and 600 step up in port and flow capacity, so match the size to the air demand of the circuit downstream - and ask us to confirm the fit, because flow is published as curves, not a single rating. This unit is ordered with an automatic drain, which suits unattended duty; manual and differential-pressure drains are available if you prefer control or energy-saving purge behaviour. The 5 um element (code W) is the finer choice over the 40 um standard where downstream valves and cylinders need cleaner air. The square gauge here reads psi; MPa and bar scales are alternatives. Thread is G (BSPP) on this code, with PT standard and NPT orderable; a bracket is included. Confirm sizing against the application with us 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 as performance curves rather than a single rated figure, so we do not quote one number. Tell us your application's air demand and we will confirm the sizing from the datasheet on request.
The A in the code selects the automatic drain, which expels collected condensate without anyone opening the bowl - useful on unattended or hard-to-reach installations. GFR300 units can also be ordered with a manual drain or the default differential-pressure drain; the regulation range differs slightly by drain type (0.05-0.9 MPa with manual drain, 0.15-0.9 MPa otherwise).
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.