The AirTAC GFR300C15ALJF2W AirTAC Filter Regulator 1/2 in PT 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 GFR300C15ALJF2W is a 300-size filter regulator that removes water and particulate from compressed air and holds downstream pressure at a set point in a single body. This configuration carries a 1/2 in PT port, a 5 um filter element, an automatic drain that expels collected condensate without operator attention, a metal bowl, and an embedded square gauge reading in psi. The regulator is the low-pressure type, no mounting bracket is fitted, and no reverse (check) valve is fitted. 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 is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, in PT, G (BSPP) or NPT thread, with differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) elements, and a choice of gauge scale. Flow is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR300C15ALJF2W AirTAC Filter Regulator 1/2 in PT |
|---|---|
| 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) |
Supplies the torch circuit with air stripped of water and particles to 5 um and held at the set pressure the cutting control calls for, with the automatic drain keeping condensate out of the bowl during long cutting shifts.
Feeds the capping heads and bottle-grip cylinders on a filling line, filtering the shop air and regulating it to the pressure the capper was set up for, while the psi gauge gives operators a visible set point.
Sits ahead of the clamp cylinders on a fixture line, removing moisture and scale from the supply and holding a steady low set pressure so clamping force stays repeatable from cycle to cycle.
Every choice in this family is decodable from the code. Step size first: 200, 300, 400 and 600 correspond to increasing port size and flow capacity, so match the 300 size and its 1/2 in PT port against the demand of your circuit. Choose the drain: automatic (this unit) empties the bowl on its own, manual needs operator action, and differential-pressure drains as the element loads up. Choose the element: 40 um standard or 5 um (code W, as here) for finer protection of downstream equipment. Gauges are embedded square or optional external round, with MPa, psi or bar scales. Thread is PT as standard, with G and NPT as order options, and a bracket is optional (omitted on this configuration). Flow is published as curves, not a single rating, so send us your application details 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 we do not quote a number here. Send us your inlet pressure, downstream demand and port requirements, and we will confirm the flow from the datasheet for your specific application.
The code carries the L low-pressure regulator type instead of the standard type. Its adjustment range is not published as a single figure, so tell us the set pressure your circuit needs and we will verify it against the datasheet before you order.
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.