The AirTAC GFR300-10 AirTAC Filter Regulator PT3/8, 40 um, psi Gauge 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 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 GFR300-10 is a 300-size filter regulator that cleans compressed air and sets downstream pressure in one body. Water and particulate are stripped by the 40 um element into a polycarbonate bowl with differential-pressure drain, while the standard regulator holds your set pressure anywhere in its 0.15-0.9 MPa (20-130 psi) adjust range. The embedded square gauge reads in psi, and a reverse/check valve is fitted so upstream pressure loss does not dump your regulated setting. Porting is PT3/8 and the maximum inlet pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GFR line runs from size 200 to 600 with PT, G and NPT thread options, a 5 um element (code W), automatic or manual drain choices, MPa/psi/bar gauge scales and low-pressure variants, so a matching unit exists for most line sizes. Flow is published as curves rather than a single rating - ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR300-10 AirTAC Filter Regulator PT3/8, 40 um, psi Gauge |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (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 — square, 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 0.15 - 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". |
| (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). |
| F | Gauge shape: Square. 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) |
Feeding a plant-floor pneumatic press station: the 40 um element removes water and pipe scale ahead of the actuators, and the regulator holds a steady working pressure so stroke force stays repeatable through the shift.
Point-of-use conditioning on a packaging line's air drop: clean, regulated air to the cylinders and grippers that case, seal and divert product, with the check valve holding the setting if upstream supply dips.
Supplying an automated assembly cell's valve manifold: the GFR300-10 filters condensate and particles from the shop air and lets the cell's set pressure be dialled in locally, read on the square psi gauge.
Size the GFR300 by the flow your line needs: step up from 200 through 300, 400 and 600 as port and demand grow - this 300-size unit carries PT3/8. Choose the drain to match duty: the differential-pressure drain fitted here suits steady flow, automatic drain (code A) suits unattended or intermittent lines, manual (code M) suits light duty. The 40 um element is the standard grade; specify W for 5 um where finer filtration is needed. Gauge scale is psi here; MPa or bar scales are available, and an external round gauge can replace the embedded square one. PT is the standard thread - order G (BSPP) or NPT if your piping needs it - and the mounting bracket is included.
Because AirTAC publishes flow only as curves, not a single rated figure, 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. 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, not as a single rated number, so we do not quote a figure here. Tell us your line pressure and the air demand of your equipment, and we will confirm the datasheet flow for the GFR300-10 (or recommend the right size) before you order.
K means a reverse/check valve is fitted, so the regulated setting is held if upstream pressure falls. This unit's drain is the differential-pressure type: it expels collected condensate automatically when flow is running, with no manual draining needed. Automatic (A) and manual (M) drain versions are available if your duty suits them better.
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.