The AirTAC GFR300C10AC3WTK AirTAC Filter Regulator NPT3/8 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 GFR300C10AC3WTK is a 300-size filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body, so a single unit conditions and controls the air feed. This configuration is built with a 3/8 in NPT port, a fine 5 um filter element, an automatic drain that ejects collected condensate without manual attention, a round pressure gauge reading in bar, a built-in reverse (check) valve, and a mounting bracket for panel or surface fixing. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type, filter grade, gauge style and scale, thread form (PT standard, G and NPT as order options) and bracket. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C10AC3WTK AirTAC Filter Regulator NPT3/8 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) |
On a bench or C-frame pneumatic press, this unit filters the shop air to 5 um and holds a set working pressure for the press cylinder, with the check valve holding the circuit if supply dips.
On a packaging conveyor with pneumatic diverters and clamp cylinders, the 3/8 in NPT port feeds the manifold, the automatic drain keeps condensate out of the valves, and the bar gauge gives operators a visible setpoint.
For laboratory automation skids running small pneumatic grippers and probes, the 5 um element protects sensitive components and the regulator sets the low, stable pressure those devices need.
Sizing starts with the port and body size: the 300 size with its 3/8 in NPT port suits mid-range air lines, while smaller 200 or larger 400/600 bodies step port and flow capacity up or down. Choose the drain to match access: this unit's automatic drain suits duty where the bowl cannot be checked often; manual drain suits attended installations; the default differential-pressure drain self-drains on pressure drop. The 5 um element (code W) is the finer choice over the 40 um standard where downstream equipment needs cleaner air. Gauge style and scale (MPa, psi or bar) and the thread form (PT standard, G or NPT to order) are also decodable choices, and the included bracket simplifies mounting.
One honest note before ordering: AirTAC publishes flow for this family as curves, not as a single rated number, so send us your line size and demand profile and we will confirm the sizing against the datasheet before you commit.
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 family as performance curves, not as a single rated figure, so we do not quote a number here. Tell us your line size and air demand and we will confirm the flow and sizing from the datasheet on request before you order.
The W code on this model selects the 5 um filter element instead of the 40 um standard, which suits downstream equipment that needs finer air. The A code selects the automatic drain, which expels collected condensate on its own - the right choice where the bowl is not checked daily. Both are catalogue options on the GFR300.
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.