The AirTAC GFR300C10ALF3WT AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR300C10ALF3WT is a size-300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration is built around a 3/8 in NPT port, a fine 5 um filter element (code W), an automatic drain that expels collected condensate without manual attention, and a low-pressure regulator for circuits that run below standard working pressures. The embedded square gauge reads in bar, the bowl is metal, and a mounting bracket is included.
This is a genuine AirTAC part from the GFR300 series, one of four sizes (200/300/400/600) spanning port sizes from 1/8 in to 1 in, with manual or differential-pressure drain options, a 40 um standard element, alternative gauge scales, and PT or G thread variants available to order. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C10ALF3WT AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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 pneumatic clamps that hold workpieces during fixture loading, with the low-pressure regulator keeping the circuit in its intended band and the 5 um element protecting the clamp valves.
Conditions the shop-air feed to bench-mounted test instruments, removing water and fine particulate ahead of sensitive components while the automatic drain keeps condensate off the rig floor.
Supplies the low-pressure air knives and jet manifolds that guide cartons along a conveyor, with the metal bowl and automatic drain handling condensate from a line that runs all shift.
Start with the port step: this unit is the 300 size with a 3/8 in NPT port; step up to 400 or 600 if your line needs more flow capacity, or down to 200 for compact circuits. The 5 um element (code W) suits finer air-quality needs, while the 40 um standard element remains available in the series. The automatic drain is the right choice where the unit sits in an awkward or unattended position; manual and differential-pressure drains are the alternatives. The square gauge here reads in bar; MPa and psi scales are offered in the series. PT is the standard thread, with G and NPT as order options, and a bracket is included for panel or surface mounting.
Because flow is published as curves rather than a single rated figure, ask us to confirm sizing against your application 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 number, so we do not quote a figure here. Tell us your inlet pressure, set pressure and consumption, and we will confirm the flow from the datasheet for this exact model before you order.
The A in the code sets the automatic drain, which ejects collected condensate on its own - useful where the unit is mounted out of reach or runs unattended. The W sets the 5 um filter element, one grade finer than the 40 um standard element, for circuits with finer air-quality requirements.
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.