The AirTAC GFR30010ALJC1WTK AirTAC Filter Regulator NPT3/8, 5 um is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT3/8" ports, a automatic 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 GFR30010ALJC1WTK is a size 300 filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single body. This configuration carries a 3/8 in NPT port, a 5 um filter element (the finer of the two catalogue grades), an automatic drain that ejects collected condensate without manual attention, and the low-pressure regulator type. It is fitted with an external round gauge scaled in MPa and a reverse/check valve, and it is supplied without a mounting bracket.
This is a genuine AirTAC part from the G-series range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of drain types, 40 um or 5 um elements, gauge styles and scales, and PT, G or NPT threads. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR30010ALJC1WTK AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, MPa scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 10 | Port size PT3/8". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT3/8" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-10 (two-unit set) |
Mounted at the drop point feeding the pneumatic cylinders and grippers on a carton-sealing or case-packing conveyor, cleaning the shop air to 5 um and holding a steady low working pressure to the actuators.
Installed ahead of the clamping circuit on a CNC fixture or pneumatic vise setup, removing water carried over from the compressor and giving the operator a local gauge and adjustment point for consistent clamping pressure.
Fitted on the main drop from a small workshop compressor to condition air before it branches to hand tools, blow guns and air tables, with the automatic drain handling condensate overnight without operator attention.
Size 300 with a 3/8 in NPT port sits in the middle of the G-series range; step up to size 400 or 600, or down to 200, according to the flow your line needs - ask us to check the published flow curves against your demand before ordering. The 5 um element suits air that feeds sensitive valves and instruments; the standard grade is 40 um. The automatic drain keeps condensate off your floor where the unit is hard to reach; manual and differential-pressure drains are alternatives in this family. The low-pressure regulator type is the right choice where the working pressure sits at the lower end of the scale - we confirm the exact adjustment range on request. The round gauge here reads in MPa; psi and bar scales and a square gauge are available. NPT is ordered as shown; PT and G threads are catalogue options, and a mounting bracket can be added.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 series as curves rather than a single rated figure, so we do not quote one number. Tell us your line pressure and the air demand of the equipment you are feeding, and we will confirm the correct size and the datasheet figures for you before you order.
The A in the code specifies an automatic drain, which ejects collected condensate from the bowl on its own - useful where the unit is mounted high or in an infrequently visited corner. The GFR family is also available with a manual drain or the default differential-pressure drain; tell us which you prefer and we will quote the matching code.
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.