The AirTAC GFR300C10ALC2 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 AirTAC GFR300C10ALC2 is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is a low-pressure type regulator with a PT3/8 port, a 40 um standard filter element, an automatic drain that expels collected condensate on its own, and a round pressure gauge reading in psi. A mounting bracket is included and the polycarbonate bowl suits general indoor compressed-air service.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of ports, PT, G or NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, gauge style and scale, and a reverse/check valve option. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet numbers for your application on request.
| Model | GFR300C10ALC2 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) |
Clean, regulated air to the clamping cylinders on a machining fixture, with the low-pressure type regulator holding the lower circuit pressure these light-duty clamps are set up for.
Feeding the pushers and stopper cylinders along a bottling line, where the automatic drain keeps condensate out of the valves during continuous shifts and the psi gauge gives operators a visible setpoint.
Supplying filtered air to pilot-operated process valves that are sized for lower supply pressure, with the low-pressure regulator trimming the circuit and the 40 um element protecting the pilot seats.
Size and port set the capacity: the 300 size with its PT3/8 port is the mid step in the GFR range (200, 300, 400, 600), so step up or down according to the flow your line needs. Choose the drain to match service: automatic (this unit) drains itself, manual needs operator attention, and differential-pressure is the catalogue default. Filter grade is 40 um standard or 5 um with code W if finer filtration is required. The gauge here is the external round type reading psi; an embedded square gauge is the standard alternative, with MPa, psi or bar scales. Thread is PT as standard, with G (BSPP) and NPT as order options, and a bracket is included.
One honest note before you order: flow is published as curves, not as a single rated figure, so send us your application details and we will confirm sizing from the datasheet before you commit.
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 range as curves rather than a single rated figure, so there is no one number we can honestly quote. Tell us your line pressure, downstream demand and acceptable pressure drop, and we will confirm the sizing from the datasheet on request before you order.
The L in GFR300C10ALC2 marks the low-pressure variant of the GFR regulator, intended for circuits regulated below the standard type's range; the exact adjustment range for this type is not published in our data sheet, so confirm your setpoint with us on request. The A marks the automatic drain, which expels collected condensate from the bowl without manual intervention - useful on unattended or continuously running equipment. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
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.