The AirTAC GFR300C10ALF2K AirTAC Filter Regulator PT3/8, 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 GFR300C10ALF2K is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This size 300 unit is ported PT3/8 with a standard PT thread (G and NPT are order options), a 40 um filter element, an automatic drain that expels collected condensate without manual attention, and a low-pressure regulator type. An embedded square gauge scaled in psi is fitted, a reverse/check valve is included, and a mounting bracket comes with the unit.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options including manual or differential-pressure drains, a 5 um element (code W), alternative gauge scales, and G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and flow data for your application before ordering.
| Model | GFR300C10ALF2K AirTAC Filter Regulator PT3/8, 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) |
Feeding filtered, regulated air to the cylinder and valve manifold circuit on a carton-forming and sealing line, with the automatic drain keeping condensate out of the valves during continuous shifts.
Supplying a fixture-clamping circuit that holds workpieces at reduced pressure, where the low-pressure regulator type and psi-scaled square gauge let the setter dial in and read the holding pressure directly.
Conditioning the air feeding blow-off nozzles and purge jets along a bottling conveyor, with the 40 um element and check valve protecting the downstream jets from water, debris and backflow.
Start with the port step: GFR comes in sizes 200, 300, 400 and 600, and moving up a size raises both the port and the air-handling capacity, so match the size to your line's flow demand. For the drain, choose automatic (this model) where condensate should be expelled unattended, manual where an operator drains the bowl, or the differential-pressure default. The standard element is 40 um; specify code W for the 5 um grade where finer filtration is needed. Gauge scale is selectable (MPa, psi or bar) and the square gauge is embedded as standard. Thread is PT as standard with G (BSPP) and NPT available to order, and a bracket is included (code J omits it). Because flow is published as curves rather than a single rating, ask us to 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 characteristic curves rather than a single rated figure, so we do not quote a rated flow, Cv or l/min number. Tell us your operating pressure and air demand and we will confirm the flow data from the datasheet for this exact model before you order.
The code F2 in GFR300C10ALF2K specifies an embedded square gauge with a psi scale, which is standard fitment on GFR units with a regulator. External round gauges and MPa, psi or bar scales are available options, so specify the scale you want when ordering if psi does not suit your panel.
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.