The AirTAC GFR300C10MLC2K AirTAC Filter Regulator PT3/8 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 GFR300C10MLC2K is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the 300 size with a PT3/8 port, a manual drain, the standard 40 um filter element, the low-pressure regulator type, an external round gauge reading in psi, a built-in reverse (check) valve, and the mounting bracket included. The bowl on this size is polycarbonate (PC), so condensate level is visible at a glance; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, gauge styles and MPa/psi/bar scales, PT, G or NPT threads, and standard or low-pressure regulation. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, and the exact adjustment range of the low-pressure type is not in the published table, so ask us to confirm both from the datasheet against your application.
| Model | GFR300C10MLC2K AirTAC Filter Regulator PT3/8 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) |
On a paint or powder-coating line, atomising air is supplied at modest pressures that a standard-range regulator cannot set cleanly. This low-pressure type filters the shop air to 40 um, holds the gun supply steady, and its check valve keeps the line from dumping back when the booth supply is shut off.
Fixture clamps and hold-downs on a CNC cell often need gentle, repeatable holding pressure rather than full line pressure. The GFR300C10MLC2K filters the feed, regulates the clamp circuit at low pressure, and the psi-scaled round gauge lets the setter read and record the setting directly.
Carton sealers, case packers and labelling heads run short-stroke cylinders that benefit from clean, moderately pressurised air. Mounted on the machine's air inlet with the included bracket, this unit drops the supply to the level the actuators were designed for, drains manually during changeover, and the check valve holds the circuit charged during brief upstream dips.
Pick the 300 size with its PT3/8 port when your circuit runs 3/8 inch piping and your demand sits in the middle of the G-series range; step down to 200 for compact circuits or up to 400 and 600 for larger ones. This unit has a manual drain, so someone opens the drain when condensate collects - the right choice where the unit is visited as part of a routine; choose automatic or differential-pressure draining instead where nobody passes by regularly. Filtration is the standard 40 um element; the W code gives 5 um where finer protection is needed. The round gauge on this model reads in psi; the embedded square gauge and MPa or bar scales are the other catalogue options. Thread is PT as standard, with G (BSPP) and NPT available to order, and the bracket is included.
Because flow is published as curves, not a single rated figure, and this low-pressure type's adjustment range is not published, send us your supply pressure, set pressure and air demand and we will confirm suitability 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 G-series flow as curves, not as a single rated number, so we will not quote you a figure that is not in the datasheet. Send us your supply pressure, your set pressure and your expected air demand, and we will confirm from the published curves whether this 300 size with its PT3/8 port is correctly sized - or whether you should step to the 400 or 600 size.
Both come straight from the model code. The M gives a manual drain: you open it to expel collected condensate, which suits units checked on a routine; the catalogue also offers automatic and differential-pressure drains for unattended installations. The C2 specifies the optional external round gauge with a psi scale, in place of the standard embedded square gauge; MPa and bar scales are also available. The L marks the low-pressure regulator type, whose exact adjustment range we confirm from the datasheet 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.