The AirTAC GFR300C10ALF2WGK AirTAC Filter Regulator G3/8, 5 um 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 GFR series combines water and particulate filtration with pressure regulation in a single body. This GFR300C10ALF2WGK is a size 300 unit with G3/8 (BSPP) ports, a 5 um filter element (code W), an automatic drain, and the low-pressure regulator type. A metal bowl collects condensate and the automatic drain discharges it without operator attention, an embedded square gauge with a psi scale shows the downstream setting, and a reverse (check) valve is fitted (code K). Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. A mounting bracket is included.
This is a genuine AirTAC part. The GFR range is offered in sizes 200, 300, 400 and 600, with port sizes from 1/8 to 1 inch, drain choices (differential-pressure, automatic or manual), 40 um standard or 5 um filtration, embedded square or optional external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application before ordering.
| Model | GFR300C10ALF2WGK AirTAC Filter Regulator G3/8, 5 um |
|---|---|
| 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 clamp and fixture cylinders on a CNC machining cell: the 5 um element removes water and fine particulate before the air reaches the regulator, and the low-pressure regulator type is intended for circuits that run at reduced set pressures.
Point-of-use preparation for carton sealers and case packers: one body filters and regulates the air to sorting and sealing actuators, the automatic drain handles condensate during long runs, and the fitted check valve limits backflow through the unit.
Supplying paint lines and spray booths where cleaner air matters: the 5 um grade reduces fine particulate ahead of the gun supply, and the psi-scale square gauge lets operators read and repeat the same setting between shifts.
The decodable choices within GFR300 that matter for sizing: the port step should match your line size and the air demand of your actuators; the drain can be differential-pressure (catalogue default), automatic as coded here, or manual (M); the element can be the standard 40 um or the finer 5 um (W) fitted to this unit; gauges are embedded square as standard with optional external round versions in MPa, psi or bar scales; threads come as PT (catalogue standard), G as coded here, or NPT; and the bracket can be included or omitted (J). This unit additionally carries the low-pressure regulator type (L) and a reverse (check) valve (K). Because 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 the GFR series as curves, not as a single rated figure, so we do not quote a number here. Send us your line size, working pressure and actuator demand, and we will confirm the sizing from the datasheet on request.
Code W fits a 5 um element in place of the 40 um standard, giving finer particulate removal ahead of the regulator - useful for spray finishing, instrumentation and other cleaner-air duties. If your application tolerates coarser filtration, the 40 um standard element is the default choice; both grades are catalogue options 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.