The AirTAC GFR300C08LJC2GK 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 AirTAC GFR300C08LJC2GK is a 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 G1/4 (1/4 in) ports, the low-pressure regulator type, a 40 um standard filter element and a differential-pressure drain on its metal bowl. It comes fitted with the optional external round gauge reading in psi and a reverse/check valve, and no mounting bracket is supplied.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and a choice of drain type, 40 um or 5 um filtration, gauge style and scale, and PT, G or NPT thread. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). Because flow is published as curves rather than a single rating, ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR300C08LJC2GK 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) |
On an assembly cell where pneumatic clamps press delicate trim or electronics housings, this unit filters the shop air and supplies it at a low regulated pressure so clamp force stays gentle on the part.
Labelers and case sealers use low-pressure air jets to hold film and clear photoeyes; a GFR300 mounted at the drop gives those heads clean, regulated air at the reduced pressure they are designed around.
Positioners and pilot-operated process valves on a plant skid need filtered air at a reduced setpoint; this filter regulator mounted at the skid edge supplies both from the main header.
The meaningful choices on this unit are already fixed in the code: 300 size with G1/4 ports, low-pressure regulation, 40 um filtration, differential-pressure drain, round psi gauge, reverse/check valve and no bracket. If you are selecting across the range, step the size (200/300/400/600) against the flow your line needs - larger sizes carry larger ports from 1/8 in up to 1 in - and choose 5 um filtration (code W) where finer particle capture matters. The low-pressure type is selected where the regulated setpoint sits below what a standard unit targets; its exact range is not published in the catalogue, so we confirm it on request. Flow is published as curves, not a single rating, so send us your application conditions and we will confirm sizing 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 flow for the GFR series as curves rather than a single rated figure, so we do not quote a number here. Tell us your line pressure and the flow your application needs, and we will confirm suitability from the datasheet on request.
The C2 in the code selects the optional external round gauge with a psi scale; the embedded square gauge (MPa, psi or bar scales) is the standard fitting. This unit also carries the K option, a reverse/check valve, and J, which means no mounting bracket is supplied.
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.