The AirTAC GFR300-15AC2K 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 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 AirTAC GFR300-15AC2K is a filter regulator: in one body it removes water and particulate from compressed air and holds downstream pressure at your setpoint. This configuration is a size 300 unit with a PT1/2 (1/2 in) port in PT thread, fitted with the standard 40 um filter element and an automatic drain that expels collected condensate without anyone opening the bowl. The standard regulator adjusts from 0.15-0.9 MPa (20-130 psi), a round psi gauge is fitted so the setpoint can be read directly, and the reverse/check valve holds downstream pressure if the upstream supply drops. Maximum inlet pressure is 1.0 MPa (145 psi), working temperature is -5 to 70 C (non-freezing), and the polycarbonate bowl suits this 300 size. A mounting bracket is included.
This is a genuine AirTAC part. The GFR300 sits in a family that runs from size 200 to size 600, with ports from 1/8 in to 1 in, and options that include a 5 um filter element (code W), manual or differential-pressure drains, G (BSPP) or NPT threads, and alternative gauge scales. Flow is published as curves rather than a single rated figure, so we confirm the datasheet figures for your application on request.
| Model | GFR300-15AC2K AirTAC Filter Regulator PT1/2 Auto Drain |
|---|---|
| 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 | 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. 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. |
| K | Reverse-flow (reflux) valve fitted. |
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 feeding tool-changer clamps and machine actuators on a CNC machining cell, where the automatic drain keeps condensate out of the valves between shifts.
Filtered and regulated air for stopper, pusher and diverting cylinders on a carton-packing conveyor line, with the check valve holding cylinder position if plant pressure dips.
Point-of-use air preparation at assembly-station drop hoses, where each bench sets its own working pressure on the round psi gauge and the 40 um element protects air tools.
Choose the size and port against the air your application actually consumes: the 300 size with its PT1/2 port is the mid step in a range that runs 200/300/400/600, and moving up a size buys more flow capacity at the same pressure setting. This unit already carries the automatic drain (code A), which suits unattended duty; manual or differential-pressure drains are available if you prefer controlled or supply-dependent purging. The 40 um element is the standard grade; specify the 5 um W option where downstream equipment needs finer filtration. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales can be ordered instead. PT thread is standard on this model, with G (BSPP) and NPT as order options, and the bracket is included.
Because AirTAC publishes flow as curves rather than a single rated number, we do not quote a flow figure here. Send us your application details and we will confirm sizing against the datasheet curves before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR300 as curves, not as a single rated figure, so we do not state a flow number here. Tell us your inlet pressure, set pressure and the air your equipment consumes, and we will confirm the sizing from the datasheet curves on request before you order.
The A in the code means an automatic drain: collected condensate is expelled from the bowl without anyone opening it, which suits unattended or continuous-duty installations. Manual and differential-pressure drain versions are available in the same size if your maintenance routine prefers a controlled or supply-dependent purge.
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.