The AirTAC GFR300C08JC1T 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 AirTAC GFR300C08JC1T is a GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady, combined in a single compact body. This unit is built on the 300 size with a 1/4 in NPT thread, a 40 um standard filtration element, a differential-pressure drain (the default drain type), a round pressure gauge scaled in MPa, a standard regulator section, and no mounting bracket.
It is a genuine AirTAC part, rated for a maximum inlet pressure of 1.0 MPa (145 psi) and -5 to 70 C operation (non-freezing), with a regulation range of 0.15-0.9 MPa (20-130 psi). The GFR family spans 200, 300, 400 and 600 sizes with ports from 1/8 to 1 in, PT as the standard thread and G or NPT as order options, plus a choice of drain type, filtration grade, gauge style and scale, and bracket or no bracket. AirTAC publishes flow as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C08JC1T 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) |
Point-of-use filtration and regulation ahead of the solenoid valves and clamp cylinders on a machining centre, keeping chips-laden, wet shop air out of the valve seats while holding a steady set pressure to the clamps.
A clean, regulated air drop feeding the stopper cylinders, pushers and grippers on a cartoning or bottling conveyor, where fluctuating header pressure would upset repeatable stroke timing.
A filter regulator at each drop leg along an assembly line, so every operator's air tools and small pneumatic presses see the same filtered, regulated supply regardless of position on the header.
Choose size and port against the air your circuit actually consumes: this 300-size unit carries a 1/4 in NPT port, and the larger sizes step up in both port and flow capacity. Drain type is a real choice - differential-pressure (as fitted here), fully automatic, or manual - and filtration grade is 40 um standard or 5 um (code W) where finer protection is needed. Gauges come as the embedded square type or an external round gauge, scaled in MPa, psi or bar. Thread is PT as the standard specification, with G and NPT as order options, and a mounting bracket can be specified where the code omits one. Because AirTAC publishes flow only as curves, not a single rated figure, send us your application details and we will confirm sizing 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 flow for the GFR series as curves, not as a single rated figure, so we do not quote a flow number here. Send us your application details - the downstream pressure you need and the air consumption of the actuators it will feed - and we will confirm the correct size from the datasheet on request.
It is the thread code: T means this unit has a 1/4 in NPT thread. PT is the standard thread for the series, while G (BSPP) and NPT are catalogue options selected at order time - this is a specification choice on the order, not a delivery matter.
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.