The AirTAC GFR300-10T AirTAC Filter Regulator 3/8 in NPT 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 GFR300-10T is a 300-size filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration has a 3/8 in NPT port, a differential-pressure drain that bleeds condensate as the pressure drop across the element rises, standard 40 um filtration, and a fitted round pressure gauge scaled in MPa. Maximum inlet pressure is 1.0 MPa (145 psi), the regulation range is 0.15-0.9 MPa (20-130 psi), and the operating temperature is -5 to 70 C (non-freezing). The polycarbonate bowl keeps the condensate level visible at a glance.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, PT/G/NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, square or round gauges with MPa, psi or bar scales, and a low-pressure type. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300-10T AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT 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 — round, 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 0.15 - 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. |
| 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. |
| (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) |
Clean, regulated air feeding tool-change cylinders and clamping fixtures on a machining centre, with the gauge giving the setter a direct pressure readout at the machine.
Conditioning the air that drives carton-closing and taping heads on a packaging conveyor, where the differential-pressure drain keeps condensate out of the valves between shifts.
A single filter regulator mounted at the inlet of a pneumatic control panel on an assembly line, protecting directional valves and logic elements while holding a stable set pressure.
Start with the port size: this 300-size unit carries a 3/8 in NPT port, and stepping up to 400 or 600 gives larger ports and more flow capacity, while 200 suits smaller lines. Choose the drain to match maintenance routines: differential-pressure (this unit) drains automatically as pressure drop builds, automatic (A) drains on a cycle, and manual (M) requires someone to open the bowl. Pick 40 um for general air preparation or the W option for 5 um protection of sensitive downstream equipment. Gauge scale is selectable as MPa, psi or bar, and the thread can be ordered as PT (standard), G (BSPP) or NPT. A mounting bracket is optional (J = no bracket). 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. 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 rather than a single rated figure, so no single flow number is quoted here. Tell us your line pressure, set pressure and expected air demand and we will confirm the flow and datasheet figures for this 3/8 in NPT unit on request.
This GFR300-10T has the differential-pressure drain: condensate is discharged automatically as the pressure drop across the filter element builds, with no operator action. If you prefer a timed automatic drain or a simple manual drain, the same 300-size filter regulator can be ordered with drain codes A or M.
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.