The AirTAC GFR300C10ALJC2 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 GFR300C10ALJC2 is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air and then regulates the downstream pressure. This configuration is built on the 300 size with a 3/8 in PT port, a 40 um standard filter element and an automatic drain that ejects collected condensate from the metal bowl without anyone having to open it. It is the low-pressure (L) regulator version, fitted with an external round gauge reading in psi, supplied without a mounting bracket and without a reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans the 200/300/400/600 sizes with ports from 1/8 in up to 1 in, PT (standard), G or NPT threads, a choice of automatic, manual or differential-pressure drains, an optional 5 um (W) element, and gauge scales in MPa, psi or bar. Regulator flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure for your application on request.
| Model | GFR300C10ALJC2 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) |
Sits at the drop feeding pneumatic clamps on a machining fixture, cleaning the shop air to 40 um and holding the clamp circuit at the low, steady pressure the fixture designer specified.
On an R&D or QC test bench, the low-pressure regulator trims a 3/8 in air line down to gentle test pressures while the automatic drain keeps condensate out of sensitive instruments.
Feeds guide-rail and pusher cylinders on a packaging conveyor, filtering line water and regulating pressure at the machine instead of back in the compressor room.
Size and port step up together: 200, 300, 400 and 600 map to ports from 1/8 in to 1 in, so choose the size whose flow curve covers your air consumption - we will confirm the curve figures on request. Drain type is a real choice: this unit carries an automatic drain (code A), while manual (M) and differential-pressure (blank) versions exist if you prefer operator-controlled or load-linked draining. The standard element is 40 um; the W suffix gives 5 um filtration. This is the low-pressure type (L); its exact regulation range is not published on our sheet, so confirm it with us before ordering. Gauge scales come in MPa, psi or bar - this unit reads psi. Thread is PT as standard; G (BSPP) and NPT are order options. Brackets are optional and this code omits one.
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 regulator flow as curves, not as a single rated number, so we do not quote a figure here. Send us your line pressure and air consumption and we will confirm the sizing from the GFR300 datasheet on request.
L marks the low-pressure regulator type. Our data sheet does not publish the exact regulation range for this low-pressure version, so please confirm it with us before ordering. What the code does fix: 3/8 in PT port, 40 um element, automatic drain, metal bowl and a round gauge reading in psi.
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.