The AirTAC GFR300C10LJF2WT AirTAC Filter Regulator NPT3/8, 5 um 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 GFR series combines a compressed-air filter and a pressure regulator in one body: air is first cleaned of water and particulate, then passed to the regulating valve. This GFR300C10LJF2WT is the 300 size with a 3/8 in NPT thread, fitted with the finer 5 um filter element (code W), a differential-pressure drain, the low-pressure regulator type (code L) and an embedded square gauge reading in psi. No mounting bracket is included (code J) and no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and 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 to 1 in, and the same platform can be ordered with the 40 um standard element, automatic or manual drains, MPa, psi or bar gauge scales, G (BSPP) or NPT threads in place of the PT standard, and with or without a bracket. Flow for this series is published as curves rather than a single rated figure, and the regulation range of this low-pressure variant is not listed in the data we hold, so ask us to confirm both from the datasheet before ordering.
| Model | GFR300C10LJF2WT AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| 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) |
Packaging machines that run seal and clamp cylinders at reduced pressure get both jobs from one body: the 5 um element keeps water and pipe debris out of the sealing valves while the regulator holds the low working pressure the carton-sealing station requires.
Bench rigs and pilot plants feeding pneumatic instruments, air tables or low-pressure actuators benefit from the finer 5 um filtration and a gauge reading directly in psi, with the low-pressure regulator type suited to reduced-pressure supply circuits.
Pneumatic hold-downs and clamp cylinders on saws, presses and CNC routers need clean, regulated air at reduced pressure; this 3/8 in NPT filter regulator feeds the clamp manifold while the differential-pressure drain clears condensate picked up from the shop air line.
Choose the size by port and air demand: sizes 200, 300, 400 and 600 step up from 1/8 to 1 in, and this 300 sits at 3/8 in NPT. Filter grade is a real choice: 40 um is the standard element, while the W code on this model selects the finer 5 um element for air feeding sensitive valves and instruments. The drain here is the differential-pressure type; automatic (A) and manual (M) versions can be ordered instead. The gauge is the embedded square type reading psi, with MPa and bar scales and an external round gauge available as options. Threads can be specified in G (BSPP) or NPT in place of the PT standard, and the J code means this unit is supplied without a bracket.
One honest note on sizing: AirTAC publishes flow for this series as curves, not as a single rated number, and the regulation range of the low-pressure (L) variant is not listed in the data we hold. Tell us your supply pressure and air demand and we will confirm the 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 there is no one l/min or SCFM number we can quote. Send us your line pressure and air demand and we will confirm the flow from the datasheet on request.
The differential-pressure drain is the standard fitting on this unit: it uses the pressure difference across the filter element to discharge collected condensate. If your application prefers it, the same 300-size filter regulator can be ordered with an automatic drain (code A) or a manual drain (code M).
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.