The AirTAC GFR300C08MLF2GK AirTAC Filter Regulator G1/4 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 GFR300C08MLF2GK is an AirTAC GFR300 filter regulator: a single body that removes water and particulate from compressed air and then regulates the downstream pressure. This configuration has a G1/4 (BSPP) port, the low-pressure regulator type, a manual drain on the metal bowl, a 40 um filter element, an embedded square gauge reading in psi, a reverse/check valve fitted, and a mounting bracket included. 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 to 1 inch, and options that include automatic or manual drains, a 5 um element (code W), gauge scale choices, and G or NPT threads to order. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application - we will send the datasheet on request.
| Model | GFR300C08MLF2GK AirTAC Filter Regulator G1/4 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Feeds spray guns on a coating line with air that has been filtered for water and particulate, then held at the low regulated pressure the gun needs - the manual drain lets an operator clear collected moisture at the start of each shift.
Supplies filtered, regulated air to clamp cylinders on a CNC fixture; the fitted reverse/check valve and the square psi gauge let the setter verify and hold the clamping pressure setting.
Sits at the air drop feeding a packaging conveyor's diverters and pushers, cleaning the shop air and regulating it to the pressure the cylinder circuit was designed around, with the included bracket simplifying mounting.
Choose the size by the port and flow you need: this unit is size 300 with a 1/4 in port, while larger sizes (400, 600) step up in port and flow. Where a drain is offered you can pick differential-pressure (default), automatic (A) or manual (M) - this unit is manual, so drain it by hand as part of routine maintenance. The standard element is 40 um; specify W for 5 um when downstream equipment needs finer filtration. Gauges are embedded square as standard with MPa, psi or bar scales, and an external round gauge is optional. Threads: PT is the standard, with G (BSPP) and NPT available to order. This is the low-pressure regulator type, so if your circuit runs at reduced pressure, tell us the target and we will confirm suitability. Flow is published as curves, not a single rating - ask us to check 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 GFR300 as curves rather than a single rated figure, so there is no one number we can quote honestly. Send us your inlet pressure, downstream demand and allowable pressure drop, and we will confirm the sizing from the datasheet on request.
The L code in GFR300C08MLF2GK marks the low-pressure regulator variant, intended for circuits that run at reduced pressure rather than full line pressure. The exact adjustment range for this type is not published in the standard table, so tell us your target pressure and we will confirm it from the datasheet.
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.