The AirTAC GFR300C15ALJC2W 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 GFR300C15ALJC2W is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a PT1/2 (1/2 in) PT-threaded port, a 5 um filter element (code W, finer than the 40 um standard), an automatic drain that expels collected condensate without manual attention, and the low-pressure regulator type for circuits that run below standard working pressures. An external round gauge on a psi scale is fitted, no mounting bracket is included, and no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The bowl on this size is polycarbonate (PC).
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and is ordered with your choice of drain type, filter grade, gauge style and scale, thread (PT standard, G and NPT as options) and bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR300C15ALJC2W 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) |
Pneumatic clamps and soft-grip fixtures on a CNC machining cell often hold workpieces at reduced pressure to avoid marking. This filter regulator cleans the supply to 5 um and holds the reduced setting, with the psi gauge giving the operator a direct readout at the cell.
On a cartoning or wrapping line, small cylinders and actuators run continuously and need water and fine particulate removed to protect their seals. The automatic drain keeps condensate off the line without an operator opening the bowl each shift.
Bench rigs and lab pilot setups regulating air to instruments or test fixtures benefit from the finer 5 um element and a local psi gauge, while the low-pressure regulator type matches circuits that never run at full line pressure.
Size 300 with a PT1/2 port suits lines plumbed at 1/2 in; step up to size 400 or 600, or down to 200, if your flow curve demands it - we can check the published curves against your consumption if you send the application details. The 5 um element (this unit) is the finer choice over the 40 um standard where downstream valves and instruments need cleaner air. The automatic drain suits unmanned or hard-to-reach installations; manual and differential-pressure drains are the alternatives on other codes. The fitted round gauge reads in psi; embedded square gauges and MPa or bar scales are the other options. Thread is PT as standard, with G (BSPP) and NPT available to order. This code ships without a mounting bracket; bracketed versions exist in the family. Note this is the low-pressure regulator type - its exact regulation range is not published, so confirm it with us before ordering.
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 this family as curves, not as a single rated number, so we do not quote a l/min or SCFM figure. Send us your operating pressure and air consumption and we will confirm the sizing from the datasheet curves before you order.
In the code GFR300C15ALJC2W, the W sets the 5 um element instead of the 40 um standard, and the A sets the automatic drain, which ejects collected condensate by itself. Manual-drain and differential-pressure-drain versions of the same size are available if you prefer a different arrangement.
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.