The AirTAC GFR300C10LJC3TK AirTAC Filter Regulator NPT3/8 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 GFR300C10LJC3TK is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has a 3/8 in NPT port, a 40 um standard filtration element, a differential-pressure drain that bleeds collected condensate automatically when the pressure differential across the element rises, and a low-pressure regulator type. A round pressure gauge with a bar scale is fitted, a reverse/check valve is installed, and the unit comes without a mounting bracket.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and PT, G (BSPP) or NPT threads. Drain, filter grade, gauge style and scale, bracket and reverse-valve options let you match the unit to the installation. Rated flow for this series is published as curves rather than a single figure, so ask us and we will confirm the datasheet figures for your application.
| Model | GFR300C10LJC3TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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) |
Clean, regulated air to clamp cylinders on a CNC machining cell, with the low-pressure regulator holding a gentle clamp force and the 40 um element keeping debris out of the valve stack.
Point-of-use supply for diverters, pushers and seal cylinders on a packaging conveyor, where the differential-pressure drain keeps condensate off the actuators without daily manual draining.
Regulated air for laboratory automation rigs and test benches that run at reduced supply pressures, with the fitted bar gauge giving a direct local pressure readout at the bench.
Size 300 with a 3/8 in NPT port sits in the middle of the GFR range; step up to size 400 or 600 for larger air demand or down to size 200 for compact lines, sizing the port against the flow your circuit needs. Choose the drain to suit access: differential-pressure (this unit) needs no daily attention, automatic drains continuously, and manual drain suits supervised points. The 40 um element is the standard grade; specify the W option for 5 um when finer protection is needed. This unit carries a round gauge on a bar scale; square embedded gauges and MPa or psi scales are alternatives. The T suffix gives NPT threads, with PT (standard) and G (BSPP) available to order, and the J suffix means no bracket is supplied. Because flow is published as curves rather than a single rating, 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 GFR-series flow as performance curves rather than a single rated figure, so we do not quote a flow number. Tell us your application and we will confirm the relevant flow and sizing data from the datasheet on request before you order.
The L code marks this as the low-pressure regulator type rather than the standard type, suited to circuits that run at reduced supply pressures; confirm the exact setting range with us for your application. The C3 code means a round external gauge with a bar scale is fitted; embedded square gauges and MPa or psi scales are available as alternatives.
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.