The AirTAC GFR300C15ALJC2WGK AirTAC Filter Regulator 1/2 in, 5 um 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 GFR300C15ALJC2WGK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit has a G1/2 (BSPP) port, a 5 um filter element, an automatic drain, the low-pressure regulator type, a round gauge reading in psi, and a reverse/check valve fitted (code K). No mounting bracket is included with this configuration. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the temperature range is -5 to 70 C, non-freezing.
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, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um (W) filtration, gauge and scale options, and G or NPT thread variants alongside the PT standard. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR300C15ALJC2WGK AirTAC Filter Regulator 1/2 in, 5 um |
|---|---|
| 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 an automotive refinish or furniture-spray line, this unit filters the shop air to 5 um ahead of the guns, regulates it at the lower setpoints spray work needs, and its automatic drain clears condensate without a daily bowl check.
Bottling and filling machines run many low-pressure air actuators; this G1/2 filter regulator conditions and regulates the supply to those valve-and-cylinder circuits at a single point on the line.
Pneumatic clamps and air tables on CNC fixtures often hold at reduced pressure; this unit filters the incoming air and regulates the clamp circuit, with the reverse/check valve fitted in the supply path.
Size 300 with a 1/2 in port sits mid-range in the GFR line; step down to 200 or up to 400/600 depending on the air demand of your circuit - we can check the published flow curves against your requirement before you order. This unit carries the L code, meaning the low-pressure regulator type rather than the standard one; its exact regulation range is not published in our material, so confirm your setpoint with us. Maximum inlet pressure is 1.0 MPa (145 psi). The 5 um element (code W) gives finer particle removal than the 40 um standard, and the automatic drain ejects condensate without manual attention; manual and differential-pressure drains are the family alternatives. The gauge reads psi (MPa and bar scales also exist), a reverse/check valve is fitted, and no bracket is included - brackets are optional. The thread here is G (BSPP); PT is the standard thread and NPT is an order option.
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 figure, so we do not quote a number here. Send us your inlet pressure, setpoint and air demand and we will confirm sizing from the datasheet on request before you order.
The L code marks this unit as the low-pressure regulator type rather than the standard one; the exact regulation range for this type is not published in our material, so confirm your setpoint with us before ordering. Maximum inlet pressure is 1.0 MPa (145 psi), the temperature range is -5 to 70 C (non-freezing), and the fitted gauge reads 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.