The AirTAC GFR300-10T AirTAC Filter Regulator, 3/8 in NPT, 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 GFR300-10T is a 300-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in one body. This configuration has 3/8 in NPT ports, a manual drain bowl in polycarbonate, a 40 um standard filter element, and an embedded square gauge scaled in MPa so you can read the regulated outlet pressure directly. The standard regulator covers a 0.05-0.9 MPa (7-130 psi) adjustment range, and maximum inlet pressure is 1.0 MPa (145 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR line is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of manual, automatic or differential-pressure drain, a 5 um element option (code W), psi or bar gauge scales, and G or NPT thread options. Flow is published as curves rather than a single rating, so we confirm the datasheet figures for your application on request.
| Model | GFR300-10T AirTAC Filter Regulator, 3/8 in NPT, Manual Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT 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 — square, MPa 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 0.05 - 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Mounted at the point of use on a bench or production press, the GFR300-10T filters incoming compressed air and holds a steady regulated pressure to the cylinder circuit, with the square MPa gauge giving the setter a direct pressure readout.
On cartoning and wrapping machines with multiple air cylinders, this filter regulator cleans the supply and sets the working pressure for the actuator bank, while the manual drain lets maintenance empty accumulated water during scheduled stops.
Feeding air tools and clamping fixtures in an assembly cell, the unit removes water and pipe-scale particles ahead of the tools and lets the cell operator set and monitor line pressure on the built-in gauge.
Size the unit by the port and flow step: 300 sits in the mid range with 3/8 in ports, so step up to 400 or 600 if downstream demand is higher, or down to 200 for smaller lines. Drain choice matters here: the manual drain on this model means an operator opens the bowl drain periodically, so pick the automatic or differential-pressure drain option instead if the unit sits where regular draining is impractical. The 40 um element is the standard grade; specify the 5 um W option where finer particulate removal is needed. The embedded square gauge reads in MPa, with psi or bar scales and an external round gauge available as options. PT is the standard thread; G and NPT are catalogue options ordered by suffix, and a mounting bracket is included. Flow is published as curves, not a single rating, so 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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure and downstream demand and we will confirm the flow figures from the datasheet for this 300-size, 3/8 in NPT unit before you order.
The M in the code GFR30010MF1T specifies a manual drain, so accumulated condensate is emptied by opening the bowl drain by hand. If the unit will be installed where regular draining is not practical, the same GFR300 size is available with an automatic drain (code A) or a differential-pressure drain (blank code) instead.
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.