The AirTAC GFR300C10LJF1T 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 GFR300C10LJF1T is a 300-size filter regulator that cleans compressed air and holds a set downstream pressure in one body. Water and particulate are spun out into the metal bowl by the 40 um element, while the low-pressure regulator keeps your circuit at the working pressure you set. This configuration is NPT3/8 ported, uses the differential-pressure drain (the bowl bleeds automatically as flow passes through), and carries the embedded square gauge on an MPa scale so you can read and adjust the outlet setting at a glance. No reverse/check valve is fitted and no mounting bracket is included.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200/300/400/600) that step up in port and flow capacity, with options including manual or automatic drains, a 5 um element (code W), psi or bar gauge scales, an external round gauge, G or NPT threads, and a bracket where needed. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C10LJF1T 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) |
On a stamping or assembly cell where clamp cylinders must hold a gentle, repeatable set pressure below the standard regulator band, this low-pressure filter regulator cleans the supply air and holds the setting while the MPa gauge shows the operator the live downstream value.
On a cartoning or wrapping line fed from a shared plant-air header, the 3/8 in NPT port carries the machine's supply, the 40 um element keeps water and pipe scale out of the directional valves, and the differential-pressure drain handles condensate without a manual purge round.
On a leak-test or component-test bench where instruments and actuators need a low, stable supply pressure, the low-pressure regulator trims the line down to the working band while the square MPa gauge gives a direct readout for recording test conditions.
Start with the port: 3/8 in NPT on this unit suits lines where the 1/4 in step would restrict supply, but the right step ultimately depends on the flow your circuit needs. Because AirTAC publishes flow as curves rather than one rated figure, send us your demand and we will confirm the correct size against the datasheet before you order. This unit is the low-pressure regulator type, chosen when the circuit works below the standard regulator's range; its exact adjustment range is not published on our sheet, so confirm it with us. The 40 um element is the standard grade for general plant air - step to the W-coded 5 um element only if downstream valves or instruments need finer filtration. The differential-pressure drain is the default and suits steady flow; pick automatic (A) for intermittent duty or manual (M) if you want controlled purging. Gauge scale is MPa here, with psi and bar available, and G (BSPP) or NPT threads can be ordered instead of the PT standard. Brackets are optional on this family, and this unit ships without one.
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 we do not quote a number that could mislead your sizing. Tell us your working pressure and air demand and we will confirm the flow from the datasheet and check the 300 size is the right step before you order.
The L in the code marks the low-pressure regulator type, used where the circuit must run below the band of a standard regulator. Its exact adjustment range is not published on our sheet, so confirm the range with us against your set pressure. The rest of the decode is standard: 40 um filtration, differential-pressure drain, embedded square MPa gauge, NPT3/8 port, and no bracket or check valve.
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.