The AirTAC GFR300C08ALJC2WT AirTAC Filter Regulator NPT1/4 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 GFR300C08ALJC2WT is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure steady. This configuration is built for 1/4 in NPT ports, carries the fine 5 um filter element (the finer of the two published grades), drains condensate automatically, and is the low-pressure regulator type. It comes with an external round pressure gauge reading in psi, and the bowl is metal. Maximum inlet pressure is 1.0 MPa (145 psi) and the working 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 to 1 in, and options including manual or differential-pressure drains, the 40 um standard element, an embedded square gauge or an external round gauge with MPa, psi or bar scales, and PT, G or NPT threads (PT is the standard thread; G and NPT such as this one are catalogue options to order). AirTAC publishes flow as curves rather than a single rating, so ask us to confirm flow and datasheet figures for your application.
| Model | GFR300C08ALJC2WT AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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) |
Placed ahead of a solenoid valve island, this unit strips water and fine particles from the plant air ring main and holds a steady, lower set pressure so valve spools and seals are not exposed to surges or condensate.
On a paint line, the 5 um element catches fine particulate before it reaches the spray gun, the automatic drain clears collected condensate without operator attention, and the low-pressure type regulator suits guns that run at modest set pressures.
Feeding the cylinders and air bells on a packaging line, this filter regulator keeps grit and water out of the actuators and lets the line supervisor read and hold the working pressure on the round psi gauge.
Within GFR300 the real choices are: port size (here NPT 1/4), stepped against the flow your line needs - larger sizes carry larger ports; drain type (this unit is automatic, with manual and differential-pressure also available); filter grade (this unit is the 5 um W element versus the 40 um standard); gauge (this unit has an external round gauge on a psi scale, while an embedded square gauge with MPa, psi or bar scales is the alternative); and thread (PT is standard, G and NPT are order options). No mounting bracket is included with this code. Because AirTAC publishes flow as curves rather than one rated figure, ask us to confirm sizing against your application 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 series as curves, not as a single rated figure, so we do not quote a number here. Send us your line pressure, port size and demand profile and we will confirm the flow and datasheet figures for your application on request.
This code specifies the low-pressure regulator type rather than the standard one, so it is intended for applications set below normal line pressure. The exact adjustment range for the low-pressure version is not published in the catalogue, so confirm your target set pressure with us before ordering. This unit also carries the 5 um element, an automatic drain, a round psi gauge and no mounting bracket.
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.