The AirTAC GFR300C10MLJF3T AirTAC Filter Regulator NPT3/8 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 AirTAC GFR300C10MLJF3T is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This unit is built in the GFR300 size with NPT3/8 (3/8 in) ports, a manual-drain metal bowl, a 40 um standard filter element, and the low-pressure regulator type. It carries a fitted square pressure gauge scaled in bar, has no reverse/check valve, and is supplied without a mounting bracket. 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 covers sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options that include automatic or manual drains, a 5 um element (code W), alternative gauge scales, G or NPT threads in place of the PT standard, and mounting brackets. The regulation range for the low-pressure type of this configuration is not published in the standard table; ask us and we will confirm it, together with flow figures, which AirTAC publishes as curves rather than a single rating.
| Model | GFR300C10MLJF3T AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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 air to spray guns or coating heads that run below standard regulator settings: the low-pressure type regulates in the lower band while the 40 um element and manual-drain bowl keep water and dirt out of the finish.
A bench or laboratory manifold needing clean, reduced-pressure air: the filter regulator conditions the supply in one body, and the bar-scaled square gauge gives a direct local pressure reading at the bench.
Supplying filtered, regulated air to pick-and-place cylinders and pneumatic actuators on a packaging line, with the manual-drain bowl emptied during scheduled line maintenance.
Choose the size by port and flow: GFR300 with 3/8 in ports sits in the middle of the range, with sizes 200, 400 and 600 stepping down or up in port and flow capacity. This unit has a manual drain, so the bowl is emptied by hand as part of routine maintenance; automatic (code A) and differential-pressure (default) drains are available if the installation is unattended. The 40 um element is the standard grade; specify code W for the 5 um grade where finer filtration is needed. The fitted square gauge reads in bar, and MPa or psi scales can be ordered instead. The thread here is NPT; PT is the AirTAC standard and G (BSPP) is also a catalogue option. No mounting bracket is included with this code. AirTAC publishes flow as curves, not a single rating, so send us your flow and pressure conditions and we will confirm sizing against 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 inlet pressure, set pressure and required flow, and we will confirm from the datasheet whether GFR300 with 3/8 in ports suits your application.
The M in the code specifies a manual drain: water collected in the bowl is released by hand during maintenance. If the installation is not attended regularly, the same GFR300 configuration can be ordered with an automatic drain (code A) or with the differential-pressure drain that is the series default.
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.