The AirTAC GFR300C15ALJF2TK AirTAC Filter Regulator NPT1/2 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 GFR300C15ALJF2TK is an AirTAC GFR300 filter regulator: filtration (water and particulate removal) and pressure regulation combined in one body, with a 1/2 in NPT1/2 port. This configuration carries an automatic drain, a 40 um filter element, a metal bowl, an embedded square gauge reading in psi, a built-in check valve (code K), and no mounting bracket. It is the low-pressure regulator type. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and offers manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, standard or low-pressure regulators, gauge and thread options, and bracket or no-bracket builds. Flow is published as curves rather than a single rating, so ask us to confirm datasheet figures for your application.
| Model | GFR300C15ALJF2TK AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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) |
Conditioning the air feeding the grip, fill and capping cylinders of a bottling line: water and debris are stripped out at the 40 um element and the low-pressure regulator holds a reduced, stable supply pressure to the machine's air headers.
Supplying a workholding clamp circuit on a pneumatic press where the clamping force must be set at a reduced pressure below line supply; the low-pressure regulator type suits circuits that operate well under full line pressure.
Feeding diverter gates and stop cylinders on a conveyor line: the automatic drain keeps condensate out of the valves, and the built-in check valve helps the downstream circuit hold its set pressure if the upstream supply is interrupted.
Size and port step up from 200 through 600 as flow demand grows; this unit is size 300 with a 1/2 in NPT thread (G and PT threads are order options). Choose the drain to match service: automatic (this unit) for unattended condensate removal, manual for periodic draining, or differential-pressure. Filtration is 40 um standard; specify W for 5 um when finer protection is needed. The embedded square gauge reads psi here, with MPa and bar scales available as options, and the K code adds a check valve that helps hold downstream pressure if upstream supply drops. This is the low-pressure regulator type; its exact adjustment range is not published, so confirm it with us before ordering. Flow is published as curves, not a single rated figure - ask us to check sizing against your application.
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, not as a single rated figure, so we do not quote a number here. Send us your required flow and working pressure and we will confirm from the AirTAC datasheet whether this size 300, 1/2 in unit is correctly sized for your application before you order.
K is the reverse/check valve code: a check valve is fitted in the unit. If upstream supply pressure drops or is lost, the check valve helps hold the regulated downstream pressure, which is useful for circuits that must keep their set point or position. Note this unit is also the low-pressure regulator type; its exact adjustment range is not published, so confirm it with us.
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.