The AirTAC GFR300C10MLJF2WT 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 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 GFR300C10MLJF2WT is an AirTAC GFR-series filter regulator: a water-and-particulate filter and a pressure regulator combined in a single body. This 300-size unit is threaded 3/8 in NPT, carries the 5 um filter element (code W), drains by hand through its manual drain, and is the low-pressure type as coded by L. The regulated pressure is read on the fitted embedded square gauge scaled in psi, the metal bowl collects the condensate strained out of the air, and the unit is supplied without a mounting bracket. Operating temperature is -5 to 70 C, non-freezing, with a maximum inlet pressure of 1.0 MPa (145 psi).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across drain type (differential-pressure, automatic or manual), 40 um or 5 um filtration, gauge scale, G and NPT thread variants, and brackets. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR300C10MLJF2WT AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Filtered, regulated air to the clamp and reject cylinders on a bottling line, with the 5 um element guarding valve seals against particulate and the manual drain bled at scheduled shift checks.
The low-pressure type suits fixture-clamping circuits on a machining cell that hold workpieces at reduced pressure, with the psi-scaled square gauge giving the operator a direct setpoint readout.
Supplying filtered, regulated air to the nozzles that clear dust from cartons on a packaging conveyor, with the metal bowl catching condensate between manual drain intervals.
Size and port step up together with flow demand: 200 for 1/8-1/4 in ports, 300 for 3/8-1/2 in, 400 for 3/4 in and 600 for 1 in - choose the size whose flow curve covers your consumption. Drain choice matters in service: a manual drain like this one needs periodic bleeding, while automatic (A) and differential-pressure (default) types discharge condensate themselves. Filter grade is 40 um as standard or 5 um (W) where finer particulate protection is required. Gauge scale is selectable as MPa, psi or bar, thread is PT as standard with G and NPT as order options, and a mounting bracket is optional. Because flow is published as curves, not a single rating, send us your application conditions and we will confirm sizing from the datasheet before you order.
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. Send us your working pressure and air consumption and we will confirm the flow from the datasheet for this 3/8 in NPT, 300-size unit.
The M in this code means the bowl drains by hand - accumulated condensate is bled off at service intervals. The same 300-size filter regulator is also available with an automatic drain (A) or the differential-pressure drain that is the family default; ask us to quote the variant you need.
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.