The AirTAC GFR300C15AJF2 AirTAC Filter Regulator PT1/2, Auto Drain 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 GFR300C15AJF2 is a filter regulator: a single body that removes water and particulate from compressed air and holds downstream pressure steady. This size 300 unit is threaded PT1/2 (1/2 in), carries the standard 40 um filter element and drains condensate automatically, so the polycarbonate bowl empties itself while the line keeps running. The standard-type regulator adjusts from 0.15 to 0.9 MPa (20-130 psi), an embedded square gauge graduated in psi is fitted, and the unit is rated to 1.0 MPa (145 psi) inlet at -5 to 70 C (non-freezing). This configuration omits the mounting bracket; a bracket is available as an option.
This is a genuine AirTAC part. The GFR range spans 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 or 5 um (W) filtration, and MPa, psi or bar gauge scales. Rated flow is published as curves rather than a single figure, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR300C15AJF2 AirTAC Filter Regulator PT1/2, Auto Drain |
|---|---|
| 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) |
Point-of-use air preparation for a machining centre: the GFR300C15AJF2 cleans water and swarf-laden condensate out of the shop air and holds a steady set pressure to tool clamps and pneumatic actuators, with the automatic drain keeping the bowl clear through unattended shifts.
Mounted ahead of the gripper and filler cylinders on a bottling line, this filter regulator strips moisture and particulate from the header air and regulates it to the pressure the cylinder circuit was designed around, so stroke timing stays repeatable from start-up to clean-down.
Used as the air preparation module at the head of a machine control panel, feeding directional valves and downstream logic components: the 40 um element protects the valve seats, the psi-scale square gauge gives the panel a visible set point, and the PT1/2 port suits the panel's main air inlet.
Step up or down through the GFR sizes (200/300/400/600) to match the port and the flow your line needs; this unit sits at size 300 with a PT1/2 port. Drain choice matters: automatic drain suits unattended duty, manual drain puts bowl emptying on a maintenance round, and the differential-pressure default drains on a pressure drop. Filtration is 40 um standard; specify W for 5 um where finer protection is needed. Gauge scale is selectable (MPa, psi or bar) and thread can be PT (standard here), G or NPT. Flow is published as curves, not a single rating, so let us confirm sizing against your application 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 there is no one l/min or SCFM number we can honestly quote. Send us your application details and we will confirm the flow and sizing from the datasheet on request before you order.
The A in the code means the condensate drain is automatic: the bowl empties itself while the line runs, which suits unattended or hard-to-reach installations. Manual drain (code M) and the differential-pressure default are orderable alternatives on the same GFR300-15 body, alongside the 5 um (W) filter option if you need finer filtration than the standard 40 um.
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.