The AirTAC GFR300C10AF1WT AirTAC Filter Regulator 3/8 in NPT 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 GFR300C10AF1WT is a 300-size filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration is fitted with a 3/8 in NPT port, an automatic drain that ejects collected condensate without operator attention, a fine 5 um filter element (the 40 um element is the standard alternative), an embedded square pressure gauge reading in MPa, and a mounting bracket. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing). The 300 size uses a polycarbonate bowl; only the 600 size moves to aluminium alloy.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of drain type, 40 um or 5 um filtration, gauge style and scale, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C10AF1WT AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Feeds filtered, regulated air to the tool-clamp and coolant-mist circuits of a CNC machining centre, with the 5 um element protecting the machine's pneumatic valves from water and fine particles.
Supplies steady regulated pressure to the cylinders on a carton-sealing and taping conveyor line, where the automatic drain keeps condensate out of the actuators during long unattended shifts.
Conditions the air feeding a robot end-of-arm gripper manifold, holding a stable setpoint so grip force stays repeatable while the 5 um element shields the small control valves.
Size up by port and flow demand: the 300 size with a 3/8 in NPT port sits mid-range in the GFR family, between the 200 (1/8-1/4 in) and 400 (1/2 in) sizes. Because flow is published only as curves and not as a single rated figure, ask us to confirm sizing against your air demand before ordering. Choose the drain to match access: automatic (as fitted here) suits enclosed or infrequently attended installations, manual suits periodic checks, and differential-pressure drain is the catalogue default. The 5 um element fitted here is the finer option for downstream valves and instruments; the 40 um element is the standard choice for general supply. The square MPa gauge is fitted as standard; an external round gauge in MPa, psi or bar is available, as are PT and G thread variants and bracket options.
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 rather than a single rated figure, so we do not quote a flow number. Tell us your air demand and line pressure and we will confirm the datasheet flow curve for this 300-size, 3/8 in NPT unit on request.
The 5 um element (code W) is the finer option versus the 40 um standard and suits downstream valves, cylinders and instruments that tolerate less particulate. The automatic drain ejects collected condensate on its own, which suits enclosed cabinets or equipment that runs unattended; a manual or differential-pressure drain is available if you prefer.
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.