The AirTAC GFR300C10LJF2TK AirTAC Filter Regulator 3/8 in NPT 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 GFR300C10LJF2TK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation in a single body. This configuration has 3/8 in NPT ports, a 40 um filter element, a differential-pressure drain, a metal bowl, an embedded square gauge reading in psi, a fitted reverse (check) valve, and the low-pressure regulator type for lower set-point duties. No mounting bracket is supplied. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR300 series is one of four sizes (200, 300, 400, 600) with port options from 1/8 to 1 in, manual or automatic drain variants, a 5 um element option (code W), gauge scales in MPa, psi or bar, and G (BSPP) or NPT threads alongside the PT standard. Flow is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR300C10LJF2TK AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Pneumatic clamps on a CNC machining fixture that hold aluminium parts at reduced air pressure get filtered, regulated supply from one compact GFR300 body, with the fitted reverse valve preventing backflow in the clamp circuit.
On a carton-forming and sealing machine, this unit cleans shop air to 40 um and regulates it to the low set points the cylinders and grippers need, with the embedded square psi gauge giving direct, repeatable setting.
A blow-off manifold over a conveyor line needs clean, steady low-pressure air; the filter regulator supplies it in one unit, and the differential-pressure drain removes collected condensate as the element loads.
Choose the size and port by the flow your line needs: this unit is size 300 with 3/8 in NPT ports, and the smaller or larger GFR sizes step port and flow capacity up or down. Because flow is published as curves, not a single rated figure, send us your demand and we will confirm the right size before you order. The other real choices are drain type (differential-pressure as here, automatic, or manual), filter grade (40 um standard, 5 um with code W), gauge scale (MPa, psi or bar; this unit has an embedded square psi gauge, with an external round gauge optional), thread (PT standard; G and NPT to order), bracket (optional; not supplied on this code), and the low-pressure regulator type fitted here - its exact adjustment range is not published, so we confirm it on request.
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, not as a single rated figure, so we do not quote a number here. Tell us your line demand and we will confirm sizing against the datasheet curves for this size 300, 3/8 in unit before you order.
This unit uses the low-pressure regulator type instead of the standard one. Standard GFR units with this drain adjust from 0.15 to 0.9 MPa (20-130 psi); the low-pressure variant covers lower set points, and its exact range is not published, so we confirm it on request. The embedded square gauge on this unit reads in psi.
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.