The AirTAC GFR300C15LF2G AirTAC Filter Regulator G1/2 Low-Pressure 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 GFR300C15LF2G is a size 300 filter regulator: water and particulate removal plus pressure regulation combined in a single body. This configuration carries a G1/2 (BSPP) port, a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and a low-pressure type regulator for circuits that must be held at modest working pressure rather than full line pressure. An embedded square gauge with a psi scale is fitted so the set pressure is visible at the unit, and the mounting bracket is included. It is built for compressed air only, rated to 1.0 MPa (145 psi) maximum inlet pressure, and operates from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with matching port sizes, and options include manual or automatic drains, a 5 um element (code W), gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow figures for this series are published as curves rather than a single rated number, so ask us and we will confirm the datasheet figures for your application before you order.
| Model | GFR300C15LF2G AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| 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) |
Mounted at the drop of a cartoning or wrapping line, it cleans condensed, dirty plant air and holds a steady regulated supply to the sealing and clamp cylinders, with the psi gauge letting operators verify the setting at a glance.
Feeding a bench press or clamping fixture where the circuit must run at a modest, stable pressure below full line pressure, the low-pressure type regulator trims the supply while the 40 um element keeps grit out of the valve stack.
On a distribution conveyor with pneumatic divertors, stoppers and lifters, this unit filters water carryover from the compressor room and holds the low regulated pressure those actuators need, draining condensate automatically as air flows.
Size 300 with a 1/2 in port suits lines whose air consumption sits in the mid range of the GFR family; step up to 400 or 600 for heavier demand or down to 200 for compact circuits. The 40 um element is the standard grade for general plant air; choose the 5 um W element where downstream valves and cylinders need finer protection. The differential-pressure drain here needs no operator attention; a manual drain (code M) suits intermittent duty and an automatic drain (code A) for unattended drains. The fitted square gauge reads in psi; MPa or bar scales are available. This unit is the low-pressure type, intended where regulated pressure must sit below what the standard version covers - the exact range is not published, so confirm it with us. The trailing G sets a G (BSPP) thread; PT is the standard thread and NPT is an order option. A bracket is included with this configuration.
Because catalogue flow is published as curves rather than a single rated figure, send us your application details and we will confirm sizing against 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 this series as curves rather than a single rated number, so there is no one l/min or SCFM figure we can quote honestly. Send us your application details and we will confirm the datasheet flow curve and help you check the size 300, G1/2 unit against your air consumption before you order.
The trailing G specifies a G (BSPP) parallel thread on this unit. PT is the standard thread across the series and NPT is available as an order option, so pick the code that matches your piping; the thread choice is a specification decision, not a delivery matter. This configuration also carries the L low-pressure regulator type, an F square gauge reading in psi (scale 2), and a differential-pressure drain.
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.