The AirTAC GFR300C10AJC2WK AirTAC 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 AirTAC GFR300C10AJC2WK is a size 300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in one compact body. This configuration is threaded PT3/8, carries a fine 5 um filter element (code W), drains condensate automatically, and is fitted with a reverse/check valve so downstream pressure is held if the supply drops. An external round gauge reading in psi is included for setpoint monitoring; a mounting bracket is not supplied.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um fine filtration, gauge style and scale options, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range with automatic drain is 0.15-0.9 MPa (20-130 psi), and the working temperature range is -5 to 70 C (non-freezing). Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR300C10AJC2WK AirTAC 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) |
Clean, regulated air to the tool-change cylinders and clamps on a machining centre, with the 5 um element protecting close-tolerance valve spools and the check valve holding clamp pressure during a supply dip.
Feeding the stopper, pusher and diverter cylinders on a carton packaging conveyor, where the regulator keeps actuator speeds repeatable between shifts and the automatic drain copes with condensate from a long supply run.
Supplying fill, capping and reject actuators on a bottling line, where steady regulated pressure keeps fill timing consistent and the 5 um grade helps protect the line's pilot valves from water and particle carryover.
Choose the size and port against the air your application actually consumes: this unit is size 300 with a PT3/8 port, one step up from the 200 series. Because flow is published as curves rather than a single rated figure, send us your demand and we will confirm the sizing against the datasheet before you order. The automatic drain on this unit suits unattended installations; manual or differential-pressure drains are available if you prefer operator-controlled or demand-based draining. The 5 um element (code W) is the finer option over the 40 um standard - keep 40 um for general supply and choose 5 um where downstream equipment needs cleaner air. Gauge style and scale (MPa, psi or bar), PT versus G or NPT thread, and the mounting bracket are all selectable; this unit runs a psi round gauge, PT thread and no bracket.
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 number, so there is no one figure we can honestly quote for this size 300, PT3/8 unit. Send us your application's air demand and pressure and we will confirm the sizing against the datasheet on request before you order.
The automatic drain (code A) ejects collected condensate on its own, so the bowl does not rely on an operator or on a pressure drop to empty - useful for units mounted high or in infrequently visited parts of the plant. The 5 um element (code W) is the finer filtration option over the 40 um standard, suited to feeding sensitive pilot valves and air tools; the trade-off is a denser element, so confirm flow against the datasheet curves if you are near the limit of the size.
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.