The AirTAC GFR300C15ALJF3WT AirTAC Filter Regulator NPT 1/2 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 GFR300C15ALJF3WT is a filter regulator: filtration and pressure regulation in one body, so a single unit strips water and particulate from compressed air and holds a regulated downstream pressure. This size 300 configuration has NPT 1/2 ports, a 5 um filter element (40 um is the standard grade, 5 um the finer W option), an automatic drain that discharges collected condensate without manual attention, and the embedded square gauge with a bar scale. It is the low-pressure regulator type, with no reverse/check valve, no mounting bracket and a metal bowl. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans four sizes (200, 300, 400 and 600) with port sizes from 1/8 to 1 inch, and the catalogue options cover drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional), gauge scale (MPa, psi or bar), thread (PT standard, with G and NPT to order) and an optional mounting bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR300C15ALJF3WT AirTAC Filter Regulator NPT 1/2 |
|---|---|
| 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) |
Feeding the cylinder and valve circuit of a carton taping line: the 5 um element keeps scale and pipe debris out of the valve stack while the regulator holds the set pressure the sealing cylinders were set up with, and the bar-scale gauge gives the line technician a local reading.
Supplying a pick-and-place module on an assembly cell: clean, regulated air to the gripper and slide valves, with the automatic drain clearing condensate from the metal bowl between shifts so no operator has to bleed it by hand.
Mounted at the drop to a process skid's air header: the filter regulator gives each skid its own filtered, regulated supply independent of header pressure, and the low-pressure regulator type suits circuits that run at reduced set pressures.
The decodable choices in this family are size and port, drain, filter grade, gauge, thread and bracket. Size 300 with 1/2 inch ports sits in the middle of the range; step to size 400 or 600 when the port or duty outgrows it, or to 200 for smaller lines. This unit is already specified with an automatic drain (the alternatives are manual and differential-pressure), the finer 5 um element instead of the 40 um standard, a square gauge reading in bar (MPa and psi scales are also available), NPT thread (PT is the standard thread; G and NPT are catalogue options) and no mounting bracket (a bracket is optional). It is the low-pressure regulator type; the exact adjustment range of the low-pressure build is not published in our material, so we confirm it on request. Because flow is published as curves and not as a single rating, send us your flow and pressure conditions 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 flow for the GFR series as curves rather than a single rated figure, so we do not quote a number on the page. Send us your flow, inlet pressure and set pressure and we will confirm the sizing from the datasheet on request before you order.
Correct. This unit carries the A drain code: condensate collected in the metal bowl is discharged automatically, so there is no manual bleeder routine to remember. Manual and differential-pressure drains are the other catalogue options if your installation prefers a different arrangement.
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.