The AirTAC GFR300C08LC2WT AirTAC Filter Regulator NPT1/4, 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 GFR300C08LC2WT is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built around a 1/4 in NPT port, a fine 5 um filter element (code W), and a differential-pressure drain that flushes collected condensate automatically as flow passes through. It is the low-pressure (L) regulator variant, fitted with an external round gauge reading in psi, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200, 300, 400, 600) spanning port sizes from 1/8 in to 1 in, with manual, automatic or differential-pressure drains, 40 um or 5 um elements, and square or round gauges in MPa, psi or bar scales available across the range. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C08LC2WT AirTAC Filter Regulator NPT1/4, 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) |
On a CNC fixture line, this filter regulator conditions the air feeding clamp cylinders: the 5 um element screens particulate before the clamping valves, and the low-pressure regulator holds the gentle holding pressure the fixture design calls for, read directly off the psi gauge.
In a paint or coating booth, spray guns and air-assisted applicators run at modest pressures. This unit filters the shop air to 5 um ahead of the gun and regulates the supply down to the setting the operator dials in, with the differential-pressure drain keeping condensate moving out of the bowl.
At a conveyor divert or pusher station on a packaging line, small cylinders cycle constantly. This 1/4 in NPT filter regulator conditions and regulates the branch feeding those actuators, and the included bracket mounts the unit directly on the machine frame beside the manifold.
Start with the port: this unit is 1/4 in NPT, so match it to your line size and step up to a larger GFR size (300 to 400 to 600) if your air demand outgrows the 1/4 in connection. The 5 um element here is the finer of the two published grades (40 um standard, 5 um optional) - choose it when downstream valves, cylinders or instruments are sensitive to finer particulate. The differential-pressure drain is the default: it discharges condensate with flow, with no manual intervention; specify automatic or manual drain codes if your duty cycle or access needs differ. The round psi gauge suits US practice; square embedded gauges and MPa or bar scales are alternatives in the series. Thread is NPT here; PT is the catalogue standard and G (BSPP) is also orderable. A bracket is included on this code. Because flow is published as curves rather than a single 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 the GFR300 series as curves, not as a single rated number, so we do not quote a l/min, m3/h or SCFM figure. Tell us your line pressure and the air demand of your equipment and we will confirm the sizing against the datasheet curves on request before you order.
The GFR300 series ships with a 40 um element as standard; the W code on this model fits the finer 5 um element. Choose 5 um when the downstream equipment - precision valves, cylinders or instruments - needs finer particulate removal. Both grades are catalogue options on this family, and the drain on this unit is the differential-pressure type, which discharges collected condensate with flow.
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.