The AirTAC GFR300C08ALJC2WK AirTAC Filter Regulator 1/4 in PT 5um 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 GFR300C08ALJC2WK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This unit is built on the size-300 GFR300 series with a 1/4 in PT port, a 5 um filter element (the finer of the two published grades), an automatic drain that discharges collected condensate without manual attention, and a metal bowl. The regulator is the low-pressure type, and the code specifies an external round pressure gauge reading in psi plus a reverse (check) valve fitted. No mounting bracket is included with this configuration.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options for drain type, 40 um or 5 um filtration, gauge style and scale, PT, G or NPT thread, and bracket. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Because flow for this series is published as curves rather than a single rating, ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR300C08ALJC2WK AirTAC Filter Regulator 1/4 in PT 5um |
|---|---|
| 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) |
Point-of-use filter regulator for the air feeding pick-and-place grippers: the 5 um element screens particulate ahead of sensitive valve stacks while the low-pressure regulator holds a gentle, controlled supply for delicate handling moves.
Feeds the cylinders and pneumatic shutters that drive sample valves and instrument doors, where clean, low-pressure air is required; the automatic drain keeps collected condensate out of the circuit without daily attention.
Regulated air for diverter and stopper cylinders on a carton packaging conveyor: a filtered, pressure-controlled supply at the machine, with the round psi gauge letting operators check the setpoint at a glance.
The real choices on this family: size step (200/300/400/600) and port (1/8 in to 1 in) matched to the air demand of the circuit; drain type - differential-pressure (default), automatic (this unit) or manual; filter grade - 40 um standard or 5 um (this unit, code W); gauge - embedded square as standard or external round, with MPa, psi or bar scales; thread - PT standard, with G (BSPP) and NPT as order options; and bracket or no bracket. This configuration also carries the low-pressure regulator type and a reverse (check) valve. On sizing: flow is published as curves, not a single rated figure, so send us your flow and pressure conditions and we will confirm the right size 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. Send us your required flow and working pressure and we will confirm from the datasheet whether this size-300, 1/4 in port unit suits your application.
A is the automatic drain, which discharges collected condensate without manual intervention; W is the 5 um filter element (40 um is the standard grade); C2 is the external round gauge with a psi scale; J means no mounting bracket is supplied; and K means a reverse (check) valve is fitted. The thread is PT as standard, with G and NPT available as order options.
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.