The AirTAC GFR300C15LJC2WK AirTAC Filter Regulator PT1/2, 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 AirTAC GFR300C15LJC2WK is a size 300 G-series filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a 1/2 in PT port, a 5 um filter element (the finer of the two published grades), a differential-pressure drain, a low-pressure regulator type, a reverse/check valve, and an external round gauge with a psi scale. No mounting bracket is fitted, so plan your mounting method accordingly.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200/300/400/600) spanning the port range from 1/8 in to 1 in, with PT, G and NPT thread options, manual or automatic drain variants, and a choice of 40 um or 5 um filtration. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300C15LJC2WK AirTAC Filter Regulator PT1/2, 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 a fixture-clamping manifold that holds workpieces at reduced pressure, this unit filters the shop air to 5 um and regulates it in the low-pressure range, with the round psi gauge giving the operator a direct reading at the cell.
Feeding the pick-and-place and sealing cylinders of a packaging line, the GFR300C15LJC2WK strips water and fine particulate before the directional valves, and the reverse/check valve helps hold the set pressure if upstream supply dips.
At a bench drop feeding pneumatic assembly tools, the 5 um element protects tool internals from condensate and grit, while the low-pressure regulator lets the station run its tools at a gentler setting than the main header.
Size 300 with a PT1/2 port sits in the middle of the G-series range; step up to size 400 or 600, or down to 200, depending on the flow your line needs - we will check the published flow curves against your demand before you commit. This unit is the low-pressure regulator type, suited to circuits that run well below standard line pressure; note that the exact adjustment range for the low-pressure type is not published in the material we hold, so confirm it with us. The 5 um element (code W) is the finer option versus the 40 um standard - choose it where downstream valves and cylinders need cleaner air. The differential-pressure drain bleeds accumulated condensate automatically as flow passes through; if your duty is light or intermittent, ask about manual or fully automatic drain variants. Thread is PT as standard; G (BSPP) and NPT are order options. This unit ships without a bracket and includes a reverse/check valve and a round psi gauge.
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 GFR300 series as curves, not as a single rated figure, so we do not quote a l/min or SCFM number. Send us your application's flow and pressure demand and we will confirm the sizing against the datasheet curves before you order.
The W in the code GFR300C15LJC2WK selects the 5 um filter element instead of the 40 um standard, and K fits a reverse/check valve. Both are decodable order options on the GFR300: choose 5 um where downstream equipment needs finer filtration, and the check valve where you want the set pressure held against upstream loss.
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.