The AirTAC GFR300C08JC2WT AirTAC Filter Regulator 1/4 in NPT 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 GFR300C08JC2WT 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 fitted with a 5 um filter element (the finer of the two available grades), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element is high enough, and a round pressure gauge reading in psi. The outlet pressure is adjustable over 0.15-0.9 MPa (20-130 psi), with a maximum working (inlet) pressure of 1.0 MPa (145 psi). The port is 1/4 in NPT thread.
This is a genuine AirTAC part from the GFR300 series. The GFR line is also available in sizes 200, 400 and 600 with larger ports, a choice of 40 um or 5 um filtration, manual, automatic or differential-pressure drains, embedded square or external round gauges with MPa, psi or bar scales, and G (BSPP), NPT or PT threads. Because AirTAC publishes flow only as curves rather than a single rated figure, we confirm flow and datasheet figures for your application on request.
| Model | GFR300C08JC2WT AirTAC Filter Regulator 1/4 in NPT 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) |
Point-of-use conditioning for the clean, dry, pressure-controlled air feeding tool changers, clamps and air bearings on a machining centre, with the 5 um element protecting fine pneumatic components.
Filtering and regulating the air that drives carton-forming, sealing and diverting cylinders on a packaging conveyor line, with the differential-pressure drain keeping condensate in check during continuous runs.
Conditioning instrument air for lab analysers, sample-handling pneumatics and test rigs where the 5 um grade and a stable, gauge-monitored outlet pressure protect sensitive equipment.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a 1/4 in NPT port; larger sizes (400, 600) carry larger ports and more flow capacity. The 5 um element fitted here suits applications needing finer filtration than the standard 40 um grade; if coarse protection is enough, the 40 um version is the lower-restriction choice. The differential-pressure drain is the default: it needs no daily manual draining and no auto-drain pilot, but for lines with heavy condensate loads consider a manual- or automatic-drain variant. The round psi gauge fitted here is the external option; an embedded square gauge with MPa, psi or bar scales is also available. G (BSPP) and PT threads can be ordered instead of NPT, and a mounting bracket can be added if the J (no bracket) build does not suit your panel.
AirTAC publishes flow for this family as curves, not as a single rated number, so please 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 does not publish a single rated flow figure for this unit; flow is given only as performance curves. We will confirm the flow data from the datasheet for your specific operating conditions on request, so you can size the 1/4 in NPT port correctly before ordering.
In the code GFR300C08JC2WT, the W selects the optional 5 um filter grade instead of the standard 40 um element, and the C2 selects the external round gauge with a psi scale (MPa and bar scales are also available). The differential-pressure drain and the absence of a bracket (J) are likewise read directly from the code.
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.