The AirTAC GFR300C10LJF2T AirTAC Filter Regulator NPT 3/8 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 GFR300C10LJF2T is a size 300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration has a 3/8 in NPT port, a 40 um standard filter element, a differential-pressure drain and a metal bowl. It is the low-pressure (L) type, so the regulator is built for lower set-point duty than the standard version, and it carries an embedded square gauge reading in psi. No reverse/check valve is fitted and no mounting bracket is included.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, gauge and scale options, and G, NPT or PT threads. Flow is published as curves rather than a single rating, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR300C10LJF2T AirTAC Filter Regulator NPT 3/8 |
|---|---|
| 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 pneumatic clamps or hold-down fixtures that must run at a reduced, stable setting - the low-pressure regulator type keeps the clamp circuit downstream of the main supply at its working set point while the 40 um element stops scale and pipe debris reaching the clamp cylinder.
A point-of-use filter regulator on a packaging or cartoning line, conditioning the air feeding diverters, pushers and small actuators: the differential-pressure drain carries off collected condensate and the square psi gauge gives the operator a direct reading of line setting.
Conditioning the pilot air for pneumatically actuated process valves on a plant line - filtered, regulated air at a low set point to the positioner or pilot circuit, with the metal bowl and differential-pressure drain suiting a panel-mounted supply point.
Choose the size and port step against the air demand of the circuit: this unit is size 300 with a 3/8 in NPT port; larger sizes carry larger ports and more flow. Pick the drain type where it matters - differential-pressure (as fitted here), automatic for unattended condensate removal, or manual for periodic draining. Filter grade is 40 um standard; specify W for the 5 um element if downstream equipment needs finer filtration. Gauge scale can be MPa, psi or bar, and thread can be ordered as PT (standard), G (BSPP) or NPT. A mounting bracket is optional; this configuration ships without one. Because flow is published as curves rather than a single rating, 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, not as a single rated figure, so we do not quote a number on the product page. Tell us your application and working conditions and we will confirm the relevant flow and datasheet figures for this size 300, 3/8 in NPT unit on request before you order.
The L in the code marks the low-pressure regulator variant: it is built for lower set-point duty than the standard GFR regulator. The exact setting range for the low-pressure type is not published in our data, so ask us to confirm it on request. Drain type (differential-pressure here), filter grade (40 um standard, 5 um with code W) and gauge scale (MPa, psi or bar) are all decodable choices you can specify when ordering.
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.