The AirTAC GFR300C08JC1WT 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 GFR300C08JC1WT is an AirTAC GFR300 filter regulator: water and particulate removal plus pressure regulation combined in one body. This configuration carries a 1/4 in NPT port, the finer 5 um filter element, a differential-pressure drain that ejects accumulated condensate automatically as air flows through, and a round pressure gauge scaled in MPa. The regulator sets downstream pressure anywhere in the 0.15-0.9 MPa (20-130 psi) range against a maximum inlet pressure of 1.0 MPa (145 psi), and the unit operates at -5 to 70 C (non-freezing). The bowl on this size is polycarbonate; size 600 units use aluminium alloy.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, PT, G and NPT thread options, 40 um or 5 um filtration, automatic, manual or differential-pressure drains, and embedded square or external round gauges in MPa, psi or bar scales. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C08JC1WT 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) |
Mounted ahead of a stamping or assembly press, it strips water and fine particles from shop air and holds a steady pressure setting so the press cylinders cycle consistently.
Feeding pick-and-place cylinders and diverters on a packaging conveyor, the 5 um element protects valve spools while the regulator keeps clamp pressure repeatable shift after shift.
Installed at the drop to a paint spray booth, it removes condensate and fine particulate and lets the operator dial in atomizing pressure on the MPa gauge.
Pick the size by the flow your line needs: 200, 300, 400 and 600 step up in port and capacity, and this 300 sits at 1/4 in NPT. The W in the code selects the 5 um element over the standard 40 um grade - choose it where downstream valves, cylinders or tools are sensitive to fine particulate. The differential-pressure drain is the no-touch default; automatic and manual drains remain catalogue options. The round gauge here reads MPa, with psi and bar scales and the embedded square gauge as alternatives. Thread is NPT on this code, PT is the standard and G is available to order, and no mounting bracket is fitted (code J).
Because AirTAC publishes flow as curves rather than one rated number, send us your required flow and working pressure and we will confirm the right size against 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 G-series flow 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 1/4 in unit suits your line.
The W in the code selects the finer 5 um grade; 40 um is the standard element. Choose 5 um where downstream valves, cylinders or tools are sensitive to fine particulate. Both grades are catalogue options across the GFR range.
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.