The AirTAC GFR300C08JF2TK 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 GFR300C08JF2TK is a 300-size filter regulator that removes water and particulate from compressed air and holds downstream pressure in one body. This configuration has a 1/4 in NPT port, a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, an embedded square gauge reading in psi, a fitted reverse/check valve, and no mounting bracket. The standard regulator covers 0.15-0.9 MPa (20-130 psi) with this drain type, and maximum inlet pressure is 1.0 MPa (145 psi). Operating temperature is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is offered in 200, 300, 400 and 600 sizes with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um (code W) element option, gauge scale choices, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300C08JF2TK 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 a small pneumatic press or clamping fixture, this unit strips water and swarf from the shop air at 40 um and holds a steady regulated pressure so stroke force stays repeatable, while the check valve holds the downstream circuit if upstream supply dips.
On a packaging line running cylinders for diverters, pushers and bag sensors, the filter regulator conditions the 1/4 in drop feed and keeps actuation pressure consistent through the shift, with condensate carried off by the differential-pressure drain.
Supplying air chucks, gates and cleaning nozzles on a CNC or grinding cell, this unit protects the valves from particulate and moisture and lets the operator set and read the working pressure in psi on the embedded square gauge.
Start with the size and port: 200/300/400/600 step up in port and flow capacity, and this 300-size unit takes a 1/4 in NPT connection - match it to your line size and the flow curve, not a single rated figure. Choose the drain: differential-pressure (this unit) needs no attention during flow, automatic drains on a timer-like basis, and manual suits intermittent duty. Pick the element grade: 40 um standard for general protection, 5 um (code W) for finer downstream equipment. Select the gauge scale (MPa, psi or bar) and whether you want the embedded square gauge or an external round one, plus PT, G or NPT thread and a bracket if you need panel fixing.
Because flow is published as curves rather than a single rating, 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 GFR300 as curves, not as a single rated number, so we do not quote a figure here. Send us your line pressure, port size and downstream demand and we will confirm the sizing from the datasheet on request.
K means a reverse/check valve is fitted. It prevents downstream pressure from backing up through the unit, which helps hold the regulated circuit if the upstream supply drops. Units without the K code do not have this valve.
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.