The AirTAC GFR300C10LJC1WT AirTAC Filter Regulator NPT3/8, 5 um 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 GFR300C10LJC1WT is a filter regulator: it removes water and particulate from compressed air and holds a steady downstream pressure in a single body. This size 300 unit is fitted with a 3/8 in NPT port, a 5 um filter element (the finer W grade, against the 40 um standard), a differential-pressure drain that flushes condensate automatically, and a low-pressure regulator supplied with an external round gauge scaled in MPa. It has a metal bowl and no mounting bracket is included, so plan your panel or manifold fixing accordingly.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and options for drain type, filter grade, gauge style and scale, thread (PT standard, G and NPT to order), bracket and reverse/check valve. Units in this series handle up to 1.0 MPa (145 psi) inlet and -5 to 70 C (non-freezing). Because this is the low-pressure type, its regulation range differs from the standard unit; we confirm the exact range, the flow curves and full datasheet figures on request before you order.
| Model | GFR300C10LJC1WT AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| 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 machining or assembly cell, this unit cleans the shop air feeding clamps and pneumatic presses and holds the clamping circuit at the lower set pressure the low-pressure type is built for, with the MPa gauge giving the operator a visible setpoint.
Bottling and cartoning lines run cylinders and diverters continuously; a 3/8 in filter regulator at the line drop keeps water and fine particulate out of the valves while the differential-pressure drain clears condensate without stopping the line.
At a bench or cell drop in a general manufacturing plant, this unit gives each workstation filtered air and a stable, low regulated supply for air tools and small actuators, with the 5 um element protecting sensitive downstream components.
Choose the size by the air your line consumes: 300 sits in the middle of the 200/300/400/600 range, paired here with a 3/8 in NPT port. Because AirTAC publishes flow as curves rather than a single rating, ask us to check the curve against your consumption before ordering. The 5 um W element suits points of use that see finer contamination than the 40 um standard, and the differential-pressure drain clears condensate automatically as pressure across the element builds. The round MPa gauge is fitted on this unit; square gauges and psi or bar scales are alternatives within the series. Thread is NPT here - PT is the catalogue standard and G is also available to order. No bracket is included, so add one if you mount off the pipe. The low-pressure regulator is intended for lower set pressures than the standard type - confirm the range with us.
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 GFR300 flow as performance curves, not as a single rated figure, so we do not quote a number here. Send us your operating pressure and air consumption and we will confirm the flow from the datasheet before you order.
This GFR300 carries the L code, so its regulator is the low-pressure type rather than the standard unit. The exact adjustment range for the low-pressure version is not published in the sheet we work from, so we confirm it on request together with the full datasheet.
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.