The AirTAC GFR300C10MLF2K AirTAC Low-Pressure Filter Regulator 3/8" 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 GFR300C10MLF2K is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is the size 300 unit with a PT3/8 port, the low-pressure regulator type, a manual drain on the bowl, the standard 40 um filter element, an embedded square gauge scaled in psi, a reverse/check valve fitted, and a mounting bracket included.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8" to 1", a choice of drain types, 40 um or 5 um filtration, gauge scale options, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C10MLF2K AirTAC Low-Pressure Filter Regulator 3/8" |
|---|---|
| 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) |
Supplying filtered, regulated air to clamp cylinders on a CNC fixture line, where the low-pressure setting keeps clamping force gentle on finished parts and the 40 um element protects the valve stack.
Feeding a solenoid valve manifold on a cartoning or filling machine, with the check valve holding the downstream circuit if upstream pressure dips and the manual drain cleared during changeover.
Conditioning shop air for a test bench or pilot-scale process skid that runs at low pressure, where the psi-scaled square gauge gives operators a direct local readout at the setpoint.
Start with the port size: this unit steps up to PT3/8, so match it to the line size and the air demand of the circuit it feeds - larger sizes carry more flow. This is the low-pressure regulator type, so choose it where the working circuit sits below the range of the standard type. The manual drain means an operator opens the drain at the bowl; if nobody will do that routinely, consider the automatic or differential-pressure drain versions instead. Filtration is the standard 40 um element; specify the W option for 5 um where finer protection is needed. The embedded square gauge here reads in psi; MPa and bar scales are also available. Thread is PT as standard, with G (BSPP) and NPT as orderable options, and a mounting bracket is included.
Flow for this family is published as curves, not a single rated figure, so send us your application details 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 family as curves rather than a single rated number, so there is no one figure we can quote honestly. Tell us your line pressure and the air demand of your equipment, and we will confirm the sizing from the datasheet curves on request before you order.
The M in the code means the bowl drain is opened by hand, which suits installations where an operator is present at intervals. If the unit will run unattended, the automatic drain or the default differential-pressure drain versions of the same GFR300 size are the better decode - the rest of the function is identical.
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.