The AirTAC AirTAC GFR300C15LJF3T Filter Regulator NPT1/2 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 GFR300C15LJF3T is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit is supplied for 1/2 in NPT ports, with a 40 um filter element, a differential-pressure drain, a metal bowl, and an embedded square gauge scaled in bar. It is the low-pressure type, carries no mounting bracket, and no reverse (check) valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options that include automatic or manual drains, a 5 um filter element (code W), gauge scales in MPa or psi, an external round gauge, G (BSPP) or NPT threads, and a mounting bracket. Flow is published as curves rather than a single rating, so ask us to confirm the figures against your application.
| Model | AirTAC GFR300C15LJF3T Filter Regulator NPT1/2 |
|---|---|
| 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) |
Point-of-use filter regulator feeding the cylinder and valve-manifold zone of a carton-sealing or wrap-around packaging machine, with the embedded bar gauge giving operators a local setpoint reference at the station.
Air preparation at a bench press or clamping fixture whose circuit calls for the low-pressure type of regulation, with the 40 um element protecting the downstream valve train from water and particulate carryover.
Filter regulator mounted on an air drop serving assembly cells, conditioning the supply before it reaches actuators and keeping the regulated pressure visible on the square gauge without opening a panel.
Size and port set the capacity: this unit is size 300 with a 1/2 in NPT port; step up to size 400 or 600, or down to 200, as your circuit demands. Drain choice matters: the differential-pressure drain fitted here passes condensate automatically when the pressure differential is sufficient, while automatic (code A) and manual (code M) drains are available. The 40 um element is standard; specify 5 um (code W) for finer filtration. The embedded square gauge here reads in bar; MPa and psi scales and an external round gauge are options. PT is the standard thread, with G (BSPP) and NPT as order options, and a bracket can be added (code J deletes it). The regulation range of the low-pressure type is not published as a single figure, and flow is published as curves rather than a rating, so ask us to confirm sizing against your application before ordering.
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. Tell us your application and we will confirm the flow and sizing from the datasheet on request.
The differential-pressure drain fitted on this unit releases collected condensate automatically when the pressure differential across it is sufficient, with no operator action. If your usage pattern suits it better, automatic (code A) or manual (code M) drain versions can be ordered instead.
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.