The AirTAC GFR300-10 AirTAC Filter Regulator PT3/8, Manual Drain 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 PT3/8" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR300-10 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 300-size unit is threaded PT3/8 (3/8 in), carries a 40 um standard filter element, and has a manual drain, so condensate is released by opening the drain valve by hand as part of routine maintenance. It regulates from 0.05 to 0.9 MPa (7-130 psi), and this configuration is fitted with an external round gauge scaled in psi plus a reverse/check valve; the polycarbonate bowl suits the 300 size and a mounting bracket is included.
This is a genuine AirTAC part in the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, optional 5 um (code W) elements, automatic or differential-pressure drains, G or NPT thread options, and gauge or no-gauge variants. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300-10 AirTAC Filter Regulator PT3/8, Manual Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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 0.05 - 0.9 MPa (7 - 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| (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. |
| K | Reverse-flow (reflux) valve fitted. |
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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Point-of-use conditioning at an assembly cell: the GFR300-10 cleans water and scale from the plant air ring main and holds a steady, operator-set pressure to the cell's air tools and clamps, with the round psi gauge giving a local reading at the station.
Feeding pneumatic diverters, gate cylinders and stopper actuators along a packaging or material-handling conveyor line, where the manual drain suits a daily maintenance walk and the reverse/check valve holds the set pressure against supply dips.
A compact conditioning and regulation stage inside an OEM machine's pneumatic panel: the single-body filter regulator saves panel space, the included bracket simplifies mounting to the backplate, and the psi gauge lets commissioning engineers set and verify setpoint.
Start with the port and size step: the 300 size with PT3/8 (3/8 in) suits lines plumbed at 3/8 in; step up to 400 or 600 where the circuit demands a larger port, and match the thread to your piping - PT is standard here, with G (BSPP) and NPT available to order. For the drain, manual suits installations visited regularly; choose automatic (code A) or differential-pressure (blank) where the unit is mounted in a less accessible spot or you want condensate handled without operator action. The 40 um element is the standard grade; specify the 5 um W option only where downstream equipment needs finer filtration. Gauge scale is selectable (MPa, psi or bar) and this unit ships configured with a round psi gauge; a reverse/check valve (code K) is fitted here, and a mounting bracket is included. Because flow is published as curves rather than 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves rather than a single rated figure, so we do not quote one number. Tell us your application and we will confirm the relevant flow-curve and datasheet figures for the GFR300-10 on request before you order.
This configuration carries code M, a manual drain: condensate collected in the polycarbonate bowl is released by hand during routine checks. If the unit will sit where it is not visited often, the same GFR300-10 body is available with an automatic drain (code A) or the default differential-pressure drain - just ask for the alternative code.
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.