The AirTAC GFR300-15A-L-J-F2 AirTAC Filter Regulator PT1/2 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 PT1/2" 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 GFR300-15A-L-J-F2 is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration takes a PT1/2 port, drains collected condensate automatically, and carries the standard 40 um filter element. It is the low-pressure regulator type and comes with the embedded square gauge scaled in psi; the -J code means no mounting bracket is included.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, a choice of automatic, manual or differential-pressure drains, 40 um or 5 um (W) filtration, G (BSPP) or NPT thread options, and gauge or no-gauge builds. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so we confirm datasheet figures on request.
| Model | GFR300-15A-L-J-F2 AirTAC Filter Regulator PT1/2 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (PT thread) |
| Filtering grade | 40 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 — square, psi 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. 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. |
|---|---|
| 15 | Port size PT1/2". 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Clean, regulated air for low-pressure clamping fixtures and workholding on a CNC machining centre, with the automatic drain handling condensate between shifts.
Point-of-use air preparation for packaging machinery actuators and diverters, where the 40 um element protects valves and the square psi gauge gives operators a local set-point check.
A filtered, regulated supply at the air drop feeding grippers and small cylinders in an assembly cell, with the low-pressure type suiting circuits that run at reduced set pressure.
Step through GFR200, GFR300, GFR400 and GFR600 to match the port and air demand of your circuit - the 300 size here carries PT1/2. Choose the drain to suit access: automatic (this unit) suits unattended duty, manual suits periodic checks, and differential-pressure drains as the element loads up. Filtration is 40 um standard; specify W for the 5 um element where finer protection matters. The embedded square gauge is psi-scaled on this code; MPa and bar scales and an external round gauge are options. Thread is PT as standard, with G (BSPP) and NPT available to order, and the -J code omits the mounting bracket. As a low-pressure type, its adjustment range differs from the standard build - ask us to confirm it against your set pressure. Flow is published as curves, not a single rating, so ask us to confirm sizing against the application before ordering.
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 GFR-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure, set pressure and expected air demand, and we will confirm from the datasheet whether the GFR300 at PT1/2 suits your application.
This -A code drains collected condensate from the PC bowl automatically, which suits unattended or hard-to-reach installations. The manual-drain build empties only when operated by hand, and the differential-pressure drain (the default) discharges as the element loads up. All three are available across the GFR 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.