The AirTAC GFR300C10LJF2GK AirTAC Filter Regulator G3/8 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 GFR300C10LJF2GK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air through a 40 um element and regulates downstream pressure in a single body. This configuration has G3/8 (BSPP) ports, a metal bowl with a differential-pressure drain that bleeds condensate as air flows through, the low-pressure regulator type, an embedded square gauge scaled in psi, and a built-in reverse/check valve (code K). No mounting bracket is included. 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 from the GFR300 series. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, PT as the standard thread and G or NPT as order options, plus a choice of drain types, 40 um or 5 um filtration, gauge scales and bracket options. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application.
| Model | GFR300C10LJF2GK AirTAC Filter Regulator G3/8 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) |
Feeding cleaned, regulated low-pressure air to clamp cylinders on a machining-centre fixture, with the psi-scaled square gauge letting setters read and set clamp pressure directly at the station.
Conditioning the air supply to diverters and flap-tuck cylinders on a packaging conveyor, where the differential-pressure drain carries off condensate through continuous production runs without operator attention.
Serving as the point-of-use filter regulator on a multi-station assembly bench, removing water and swarf from the shop-air drop while holding the low supply pressure the station's actuators need.
The real choices on this family are the size and port step against the flow your line needs (sizes 200/300/400/600, ports 1/8 to 1 inch), the drain type - differential-pressure as here, automatic or manual - the filter grade (40 um standard, 5 um with code W), the gauge and its scale (MPa, psi or bar), the thread (PT standard; G and NPT to order) and whether a bracket is fitted. This unit is the low-pressure regulator type with a square psi gauge and a check valve. Flow is published as curves, not a single rating, so send us your application details 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 this series as curves rather than a single rated figure, so there is no one l/min or SCFM number we can honestly quote. Tell us your application and operating conditions and we will confirm the relevant flow figures from the datasheet on request before you order.
K is the reverse-valve code: this unit is fitted with a reverse/check valve as part of its factory configuration. It is one of the decodable options on GFR units, alongside drain type, filter grade, gauge scale, thread and bracket, and it is built in on this model rather than added later.
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.