The AirTAC AirTAC GFR300C10ALF2WK Filter Regulator PT3/8, 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 GFR300C10ALF2WK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is sized PT3/8 (3/8 in, PT thread), built as the low-pressure regulator type, and fitted with a 5 um filter element (the finer of the two catalogue grades), an automatic drain on the metal bowl, a reverse/check valve, an embedded square gauge reading in psi, and a mounting bracket.
It is a genuine AirTAC part from the GFR300 size family, one of four sizes (200/300/400/600) with port options from 1/8 to 1 in and PT, G or NPT threads. Max working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so send us your application and we will confirm the figures from the datasheet on request.
| Model | AirTAC GFR300C10ALF2WK Filter Regulator PT3/8, 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 low-pressure clamping and swing-cylinder circuits on a machining centre, where the 5 um element protects directional valves and the fitted check valve blocks reverse flow in the circuit.
Regulating low-pressure air to carton-sealer and case-erector cylinders on a packaging conveyor line; the automatic drain clears condensate from the metal bowl without a manual dump round.
Conditioning air for filler-head and capper actuators on a bottling line, with the square psi gauge giving operators a local setpoint readout at the machine.
Choose the size by port and required flow: this unit steps up to 3/8 in PT, one step above the 1/4 in GFR300-08, while the 400 and 600 sizes carry more flow again. Because flow is published as curves rather than a single rated figure, ask us to check the curve against your air demand before ordering. Other decodable choices on this family: drain type (this unit has the automatic drain; manual and differential-pressure drains are also catalogue options), filter grade (5 um here versus the 40 um standard), gauge scale (psi here; MPa and bar are available, and an external round gauge is optional), thread (PT standard, G and NPT to order), and bracket (included here). As a low-pressure type, confirm with us that the adjustment range covers your set pressure before ordering.
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 pressure, set pressure and air demand and we will confirm the sizing from the datasheet on request.
L sets the low-pressure regulator type (the exact adjustment range is not published in the sheet we work from, so confirm your set pressure with us), W sets the 5 um element instead of the 40 um standard, A sets the automatic drain instead of the differential-pressure default, and F2 sets the embedded square gauge with a psi scale. The K adds the reverse/check valve and the bracket is included.
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.