The AirTAC GFR300C10LJF1TK AirTAC Filter Regulator NPT3/8 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 AirTAC GFR300 series combines water and particulate filtration with pressure regulation in a single body. This configuration is the 300 size with NPT3/8 (3/8 in) ports, the differential-pressure drain that is the catalogue default for condensate handling, and the standard 40 um filtration grade. It carries the low-pressure regulator type (L) for duties that call for reduced set pressures, and its exact adjustment range is not published, so confirm it against your application. A square pressure gauge reading in MPa is fitted as standard, a reverse/check valve (K) is included to hold downstream pressure when the supply dips, and the unit is supplied without a mounting bracket (J). The bowl on this unit is metal.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, plus choices of drain type, filter grade (40 um standard, 5 um with code W), gauge scale and bracket. Flow for this family is published as curves rather than a single rating, so send us your application details and we will confirm the sizing and datasheet figures on request.
| Model | GFR300C10LJF1TK AirTAC Filter Regulator NPT3/8 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) |
Filter and regulate plant air ahead of positioners and pilot solenoids on a process skid, with the fitted check valve holding the downstream set point through brief supply dips.
Supply clean, regulated air to stopper cylinders and diverter gates at a 3/8 in drop point, with the differential-pressure drain keeping condensate away from the valves.
The low-pressure regulator type suits reduced-pressure leak-test and gauging fixtures, with the square MPa gauge giving a direct reading at the bench.
The decodable choices in this family are stepwise. Size 300 with NPT3/8 ports suits circuits plumbed at 3/8 in; step up to 400 or 600, or down to 200, as the port and duty change - because flow is published as curves and not a single rating, ask us to confirm the fit against your air demand before ordering. Drain: this unit uses the differential-pressure drain (default); automatic (A) and manual (M) versions are catalogue options where you want positive discharge or periodic manual draining. The filtration grade here is the 40 um standard element; specify W for the 5 um grade. The fitted square gauge reads in MPa, with psi and bar scales and an external round gauge available as options. Thread on this code is NPT as an order option - PT is the catalogue standard. No mounting bracket is included (J).
The L in this code marks the low-pressure regulator type. AirTAC does not publish its exact adjustment range, so confirm your required set pressure with us 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. Send us your line pressure, set pressure and expected air demand, and we will confirm the flow from the datasheet on request.
The L code marks the low-pressure regulator variant, selected where the working set pressure is lower than the standard type is intended for. AirTAC does not publish its exact adjustment range, so confirm your set pressure with us before ordering. Everything else decodes normally: NPT3/8 ports, 40 um element, differential-pressure drain, square MPa gauge, fitted check valve and no mounting bracket.
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.