The AirTAC GFR300-10 AirTAC Filter Regulator NPT3/8 with 5 um Filter 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 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 holds downstream pressure steady in a single body. This configuration is built on the 300 size with a 3/8 in NPT port, a 5 um filter element for finer filtration than the standard 40 um grade, and a manual drain you operate by hand to empty the bowl. The polycarbonate bowl lets you see the condensate level, the external round gauge reads outlet pressure in MPa, and a reverse (check) valve is fitted. No mounting bracket is included.
This is a genuine AirTAC part from the GFR series, available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options including automatic, manual or differential-pressure drains, 40 um or 5 um filtration, gauge styles and scales, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C, and the regulation range for this manual-drain unit is 0.05-0.9 MPa (7-130 psi). Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures for your application.
| Model | GFR300-10 AirTAC Filter Regulator NPT3/8 with 5 um Filter |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 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, MPa 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Point-of-use filtration and regulation feeding clean, steady-pressure air to the machine tool's actuators, clamps and tool-changer cylinders, with the 5 um element protecting fine pneumatic components from particulate.
Mounted at the air drop feeding a packaging machine, the unit strips condensate and dirt before the grippers and sealing cylinders and holds their working pressure constant through the shift.
Installed at individual assembly stations, the filter regulator gives each operator a locally set, stable supply pressure for hand-held pneumatic tools and bench fixtures, with the MPa gauge visible for setting.
The main sizing decision is the size/port step: 200, 300, 400 and 600 map to increasing port sizes from 1/8 in up to 1 in, and the right step depends on the air demand of the downstream equipment. Because flow is published as curves rather than a single rated figure, ask us to check the GFR300-10 curve against your application before ordering. This unit pairs a 5 um element (code W) with a manual drain; choose the manual drain when someone is on site to bleed the bowl, or step to automatic or differential-pressure drainage for unattended operation. The external round gauge is set to the MPa scale (psi and bar scales are also catalogue options), the thread here is NPT with PT standard and G available, and no mounting bracket is included - brackets are optional across the series.
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.
Flow for the GFR300-10 is published as curves, not a single rated figure, so we do not quote a number here. Send us your air demand and operating pressure and we will confirm the datasheet curve and correct sizing on request.
The M in the code means manual drain: the polycarbonate bowl is emptied by hand when condensate collects. If the unit is mounted where nobody can bleed it regularly, the automatic-drain and differential-pressure-drain versions are catalogue options across the GFR series.
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.