The AirTAC GFR300-10 AirTAC Filter Regulator, PT3/8, 5 um, 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 PT3/8" 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 GFR300-10 is an AirTAC GFR300 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air down to 5 um (the fine W grade, versus the standard 40 um), then regulates downstream pressure across a 0.15-0.9 MPa (20-130 psi) adjustment range. This configuration has PT3/8 ports, an automatic drain that ejects collected condensate without manual attention, a round external gauge reading in psi, and a mounting bracket included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The bowl on this 300 size is PC (polycarbonate).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, and options for manual or differential-pressure drains, 40 um or 5 um filtration, embedded square or external round gauges in MPa, psi or bar scales, and G (BSPP) or NPT threads in place of the PT standard. Flow figures for this series are published as curves rather than a single rated number, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300-10 AirTAC Filter Regulator, PT3/8, 5 um, Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT 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 — round, 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. |
|---|---|
| 10 | Port size PT3/8". 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). |
| C | Gauge shape: Round. 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. |
| (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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
On a bench-mounted pneumatic press or clamping station, this filter regulator cleans the supply air to 5 um and holds a stable regulated pressure to the cylinder, with the automatic drain keeping condensate out of the valve train.
Feeding diverters, lifters and seal cylinders on a packaging conveyor, the GFR300-10 gives one PT3/8 connection point for filtered, regulated air, with the psi gauge letting operators check set pressure at a glance.
For lab automation or a test rig where fine particulate must stay out of sensitive pneumatic components, the 5 um element and automatic drain provide clean, continuously drained air at a set, monitored pressure.
Choose the GFR300-10 when your line runs 3/8 inch ports and you want one body doing both jobs: water and particulate removal plus regulated outlet pressure. If your air is dirtier or feeds sensitive components, the 5 um element fitted here is the finer choice over the 40 um standard; the trade-off is a more open element if you select 40 um instead. The automatic drain on this unit suits unattended or hard-to-reach installations; choose manual drain where you prefer controlled, scheduled draining, or differential-pressure drain as the catalogue default. The round gauge fitted here reads in psi; square embedded gauges and MPa or bar scales are the other catalogue options. Thread is PT as standard, with G (BSPP) and NPT available to order, and the bracket is included. Flow for this series is published as curves, not a single rating, so send us your application details and we will confirm sizing against 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 GFR series as performance curves rather than a single rated figure, so we do not quote a rated flow number. Send us your application details and we will confirm the flow figures from the datasheet so you can size the unit correctly before ordering.
The W in the code GFR30010AC2W selects the finer 5 um element instead of the 40 um standard, and the A selects the automatic drain, which expels collected condensate on its own instead of waiting for a manual drain. Both are catalogue options on the GFR300; the 40 um grade and manual or differential-pressure drains are available if your application prefers them.
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.