The AirTAC GFR300-10T AirTAC Filter Regulator 3/8 in NPT, 5 um 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 GFR300-10T is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is the 300 size with a 3/8 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a manual drain on the PC bowl, and an embedded square gauge scaled in bar. The standard regulator covers 0.05-0.9 MPa (7-130 psi) with manual drain, 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 family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of drain type, 40 um or 5 um filtration, gauge scale, thread (PT standard; G and NPT to order) and bracket options. Flow is published as curves rather than a single rating, so we confirm datasheet and sizing figures on request.
| Model | GFR300-10T AirTAC Filter Regulator 3/8 in NPT, 5 um |
|---|---|
| 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 — square, bar 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. C is round, F is square. |
| 3 | Gauge scale: bar. 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. |
| (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" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Clean, regulated air at a set pressure ahead of a machining centre's pneumatic tool-changer and clamping circuits, with the 5 um element catching fine particulate before it reaches valves.
A filtered and pressure-regulated supply branch feeding the pick-and-place and sealing cylinders on a packaging conveyor, with the square bar gauge giving operators a local setpoint check.
Point-of-use preparation at a spray booth drop, where the 5 um grade and stable regulated pressure support consistent atomizing air to the guns.
Size and port step up together: 200, 300, 400 and 600 carry progressively larger ports and more flow, so match the 3/8 in NPT porting here to your line size and demand. With manual drain (this unit), the regulation range is 0.05-0.9 MPa (7-130 psi); automatic and differential-pressure drain versions regulate 0.15-0.9 MPa (20-130 psi). The 5 um element suits air that is drier or feeding sensitive equipment; 40 um is the standard grade. The square gauge here reads in bar, with MPa, psi and bar scales and an external round gauge available. Thread is NPT on this unit; PT is the catalogue standard and G is also orderable. A bracket is not fitted on this code but is optional on the family.
Flow for this family is published as curves, not a single rated figure, 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 rather than a single rated figure, so we do not quote a number here. Ask us and we will confirm the datasheet flow curves for the 300 size against your application before you order.
The M in the code specifies a manual drain, which you open by hand to discharge collected water, and it widens the regulation range to 0.05-0.9 MPa (7-130 psi). The W specifies the 5 um filter element, the finer of the two grades (40 um is standard). The bowl on this 300 size is PC (polycarbonate).
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.