The AirTAC GFR300C15LJF1T AirTAC Filter Regulator NPT1/2 Low-Pressure 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 GFR300C15LJF1T is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size-300 unit is built for 1/2 in NPT ports and carries the low-pressure regulator type (code L), a 40 um standard filter element, a differential-pressure drain and an embedded square gauge reading in MPa. No reverse/check valve is fitted, and the unit is supplied without a mounting bracket.
It is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, PT thread as standard and G or NPT as order options, manual and automatic drain choices, a 5 um filter element (code W) and psi or bar gauge scales. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow for this series is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application.
| Model | GFR300C15LJF1T AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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. |
|---|---|
| C1 | 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-C1 (two-unit set) |
On a carton-forming or case-sealing line, this filter regulator cleans the supply air and holds the gentler setting that light clamp and hold-down cylinders need, while the 40 um element keeps debris out of the downstream valves.
Feeding looms, winders or coating heads that run on reduced air pressure: the filter section strips water and particulate before it reaches sensitive jets and nozzles, and the square MPa gauge gives the operator a clear local reading.
In a pilot plant or test rig where instruments and small actuators run at reduced pressure, this unit filters and regulates in one footprint, with the differential-pressure drain handling condensate without a daily manual blow-down.
Size and port step up together: 200, 300, 400 and 600 correspond to ever larger ports and flow capacity, and this unit sits at size 300 with a 1/2 in NPT thread. The drain here is differential-pressure, which discharges collected condensate according to the pressure differential across the element; manual (M) and automatic (A) drains are order options. The 40 um element is standard - specify W for the 5 um grade if finer filtration is needed. The embedded square gauge reads MPa; psi or bar scales and an external round gauge can be ordered instead. Thread comes as PT standard with G and NPT as options, and a mounting bracket can be added (this unit is supplied without one).
The L in this code marks the low-pressure regulator type, whose exact adjustment range is not published in the sheet we work from. Flow is likewise published only as curves, not a single rated figure, so send us your line pressure and air demand 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 rather than a single rated figure, so we do not quote a number here. Send us your inlet pressure, set pressure and air demand, and we will confirm the sizing from the datasheet on request before you order.
The L in the code marks the low-pressure regulator type. Its exact adjustment range is not published in the validated sheet we work from, so instead of guessing we confirm it on request. If your application runs at conventional shop-air pressures, the standard GFR300 type may be the better match.
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.