The AirTAC GFR300C10MLF1T AirTAC Filter Regulator NPT3/8 Low-Pressure 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 See datasheet 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 GFR300C10MLF1T is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in one body. This size 300 unit is supplied with NPT3/8 ports, a manual drain, a 40 um filter element and a metal bowl, and its regulator is the low-pressure type. An embedded square gauge with an MPa scale is fitted, a mounting bracket is included, and no reverse (check) valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options include automatic or manual drains, a 5 um filter element (code W), alternative gauge scales (psi or bar) and G or NPT threads in place of the PT standard. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm flow and other datasheet figures for your application on request.
| Model | GFR300C10MLF1T AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | See datasheet (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 — factory standard, Factory standard 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. |
|---|---|
| C1 | Port size See datasheet. 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). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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. |
| (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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-C1 (two-unit set) |
Feeding pneumatic clamp cylinders on a carton-sealing machine that must run at a reduced set pressure, with the manual drain emptied at shift start and the MPa gauge giving the operator a clear set-point reading.
Conditioning shop air for spray guns where removal of water and coarse particles plus gentle low-pressure regulation protect the finish, and the metal bowl suits an area where polycarbonate would be a concern.
Regulating air to conveyor stopper and pusher cylinders, where the 40 um element keeps debris out of the valves and the manual drain is checked during scheduled line walk-rounds.
Pick the size and port step (200/300/400/600, 1/8 to 1 inch) against the flow your line needs; this unit is size 300 with NPT3/8 ports. Drain choice on GFR units is differential-pressure (default), automatic or manual - this one is manual, so the bowl is emptied by hand at intervals. The standard filter grade is 40 um with a 5 um element (W) optional; this unit carries the 40 um grade. Gauges are square (embedded) or round (external) with MPa, psi or bar scales; this unit has the square MPa gauge. Thread is PT as standard with G and NPT as order options - this unit is NPT - and the bracket is included. 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 we do not quote a number for this unit. Send us your application's flow and pressure requirements and we will confirm sizing against the datasheet on request before you order.
This unit is the L low-pressure variant of the GFR300, so its regulator is intended for reduced set pressures rather than the full standard range. The exact adjustment range for this low-pressure type is not published in the catalogue, so contact us and we will confirm it against your required set point on request.
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.