The AirTAC GFR300C10LJC2WTK 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 GFR series combines filtration and pressure regulation in one body: air passes a replaceable element that removes water and particulate, then a regulator sets the downstream pressure. This GFR300 unit is the 300 size with a 3/8 in NPT port, rated to 1.0 MPa (145 psi) inlet and -5 to 70 C (non-freezing). It is the low-pressure type (code L) for circuits set below standard regulator ranges, carries the 5 um element (code W) instead of the 40 um standard, drains by differential pressure from its metal bowl, and is fitted with the external round gauge on a psi scale (code C2) plus a reverse/check valve (code K); no mounting bracket is included.
This is a genuine AirTAC part. The GFR range spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options for drain type, 40 or 5 um filtration, gauge style and scale (MPa, psi or bar), PT, G or NPT thread, bracket and check valve. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C10LJC2WTK 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) |
Point-of-use supply for a pick-and-place cell: the 5 um element keeps actuator valves clean, the low-pressure regulator holds a gentle gripper setting, and the check valve holds downstream pressure if the main supply dips.
Feeding clamp and pusher cylinders on a filling line, where the 3/8 in NPT port matches the machine's air drops and the differential-pressure drain bleeds collected water without stopping the line.
Filtered, regulated air for benchtop test rigs and small automation: the psi-scaled round gauge gives a readable setpoint and the low-pressure type suits circuits that run well below standard line pressure.
The real choices on this family: step size and port to the air your line needs (sizes 200 to 600, ports 1/8 to 1 in); drain type - differential-pressure as fitted here, automatic (A) or manual (M); filter grade - 40 um standard or 5 um with code W, as on this unit; gauge - embedded square as standard or external round, scaled in MPa, psi or bar; thread - PT as the standard, with G and NPT as order options; bracket included or omitted (J, as here); and the K reverse/check-valve option. The low-pressure type (L) on this unit suits circuits set below standard ranges. AirTAC publishes flow as curves, not a single rating, so send us your flow and pressure conditions and we will confirm sizing from 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 the GFR series as curves rather than a single rated figure, so there is no one number we can quote honestly. Tell us your flow and working pressure and we will confirm sizing from the datasheet on request.
Code L makes this a low-pressure regulator variant for circuits set below standard ranges; the exact adjustment range for this variant is not published, so we confirm it on request. Code C2 adds the external round gauge with a psi scale (MPa and bar scales are also available in the range).
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.