The AirTAC GFR300C08JF1T 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 GFR300C08JF1T is an AirTAC GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation in a single size-300 body with a 1/4 in NPT port. This configuration carries a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and an embedded square pressure gauge on an MPa scale so the setpoint can be read at a glance. The standard-type regulator adjusts from 0.15 to 0.9 MPa (20-130 psi) under a maximum inlet pressure of 1.0 MPa (145 psi), the polycarbonate bowl suits the 300 frame, and the unit is rated for -5 to 70 C in non-freezing conditions. No mounting bracket and no reverse/check valve are fitted in this variant.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with matching port steps, a choice of differential-pressure, automatic or manual drains, an optional 5 um element (code W), gauge scales in MPa, psi or bar, and G (BSPP) or NPT thread options. Rated flow for this series is published as curves rather than a single figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C08JF1T 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) |
Feeding clean, regulated air to the clamping cylinders and air-powered fixtures on a CNC machining cell, where a stable setpoint keeps workholding force consistent part after part.
Supplying the pick-and-place cylinders, diverters and sealers on a bottling or carton packaging conveyor, with the 40 um element stopping pipe-scale and condensate from reaching the valve bank.
Point-of-use air preparation at a body shop drop, filtering and regulating supply air ahead of spray guns and air tools so each station sees the pressure the gun was set up for.
Start with the port step: this unit is size 300 with a 1/4 in NPT port, the mid-range of the GFR line. If your line needs more air, step up to size 400 or 600; for compact circuits, size 200 keeps the footprint small. Choose the drain next: differential-pressure (as fitted here) needs no attention during operation, automatic drains empty the bowl on shutdown, and manual drains suit infrequently used drops. The 40 um element is standard; specify the W code for a 5 um element where finer protection is needed. Gauge scale can be ordered in MPa, psi or bar, and the thread is PT as the catalogue standard with G (BSPP) and NPT as order options - this unit is the NPT variant. Brackets are optional; this configuration ships without one. Flow for the GFR series is published as curves, not a single rating, so 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 GFR-series flow as performance curves rather than a single rated figure, so we do not quote one number. Tell us your line pressure and the air demand of your equipment and we will confirm the sizing against the datasheet on request before you order.
The differential-pressure drain fitted here bleeds condensate from the bowl automatically whenever air flows through the unit, with no operator attention. If your line runs intermittently or shuts down often, an automatic drain (code A) empties the bowl on shutdown; a manual drain (code M) suits rarely used drops where someone drains the bowl by hand.
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.