The AirTAC GFR300C08ALJC2WGK AirTAC Filter Regulator G1/4, 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 GFR300C08ALJC2WGK is a filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is built around a G1/4 (BSPP) port on the GFR300 size, with a fine 5 um filter element (code W) instead of the standard 40 um grade, an automatic drain that bleeds collected condensate from the metal bowl without manual attention, and the low-pressure (L) regulator variant. It ships configured with an external round gauge reading in psi, a reverse/check valve (K) already fitted, and no mounting bracket.
This is a genuine AirTAC part from the GFR300 filter-regulator series. The GFR line spans sizes 200 to 600 with port sizes from 1/8 in to 1 in, and each unit can be ordered with a choice of drain type, filter grade, gauge style and scale (MPa, psi or bar), thread (PT standard; G and NPT are order options), bracket and reverse valve. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet numbers for your application on request.
| Model | GFR300C08ALJC2WGK AirTAC Filter Regulator G1/4, 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. |
|---|---|
| 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) |
Fixture clamps and swing cylinders that must close at a reduced, repeatable pressure get filtration and regulation in one body; the psi gauge lets the setter read the clamping setting directly.
On a cartoning or bagging line, the 5 um element protects diverters, seal cylinders and pilot valves from water and fine dirt, while the regulator holds a steady supply pressure through the shift.
Bench-mounted test rigs and pneumatic instruments need clean, low, stable air; the low-pressure variant, fine filtration and automatic drain keep the bench supplied without daily bowl draining.
Size and port set the ceiling on how much air the unit can pass, so step up from GFR300/G1/4 if your line draws more flow than this frame can carry - we can check the published flow curve against your consumption before you order. The 5 um element in this code is the finer of the two grades (40 um is standard); choose it when downstream valves, cylinders or instruments need cleaner air. Automatic drain suits unattended duty; manual and differential-pressure drains are the alternatives if you prefer controlled or load-proportional blowdown. The fitted round gauge reads psi; square embedded gauges and MPa or bar scales are the other options. Thread here is G (BSPP) - PT is the standard offering and NPT is also orderable. This is the low-pressure (L) regulator variant and no bracket is fitted; the exact setting range for the low-pressure type is not in the material we hold, so confirm it with us on request.
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 filter-regulator flow as curves, not as a single rated number, so there is no honest one-line flow figure to quote. Send us your inlet pressure, set pressure and air consumption, and we will confirm the sizing from the datasheet curve on request before you order.
The L code selects the low-pressure regulator variant rather than the standard one; the exact setting range for the low-pressure type is not published in the material we hold, so confirm it with us on request. This configuration also carries an external round gauge reading in psi, a 5 um element, an automatic drain and a reverse/check valve, all decodable from the code itself.
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.