The AirTAC GFR300C10AF1WTK AirTAC Filter Regulator NPT3/8 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 GFR300C10AF1WTK is a size 300 filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single body. This configuration is built with a 3/8 in NPT port, an automatic drain that expels collected condensate without manual attention, a fine 5 um filter element, an embedded square pressure gauge reading in MPa, and a reverse/check valve fitted. A mounting bracket is included. 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 available in sizes 200, 300, 400 and 600 with a choice of port sizes, PT (standard), G or NPT threads, differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filter elements, gauge styles and scales, and a reverse/check valve option. 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 | GFR300C10AF1WTK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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 clean, regulated air to the tool-clamp and pallet-change circuits of a machining centre, where the 5 um element guards fine valves and the check valve holds downstream pressure if the main supply dips.
Conditioning the air going to spray guns and atomising stations on a finishing line, where water and fine particulate must be stripped out and the atomising pressure held steady at the gun.
Supplying regulated air to the clamp, divert and stopper cylinders on a packaging conveyor, where the automatic drain keeps condensate out of the circuit during continuous shifts.
Start with the port step: this unit is size 300 with a 3/8 in NPT port, one step up from 1/4 in and one below 1/2 in - match the port and size to the pipe and the air demand of the circuit, and ask us to confirm the flow curve against your application before ordering. Drain type is a real choice: automatic (this unit) drains itself, manual needs operator attention, and differential-pressure (the default) drains on a pressure drop; the adjustment range differs by drain type, with automatic and differential-pressure types covering 0.15-0.9 MPa (20-130 psi). Filter grade is 40 um standard or 5 um with the W code - this unit carries the 5 um element for finer protection. Gauge scale (MPa, psi or bar), gauge style, thread (PT standard, G or NPT to order) and bracket are all selectable. Flow is published as curves, not a single rating, so confirm sizing with us 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. Tell us your application and required flow, and we will confirm the correct size from the datasheet curves on request before you order.
The A in the code specifies an automatic drain, which expels collected condensate by itself and suits unattended or continuous operation. The alternatives are a manual drain (drained by the operator) and the differential-pressure default (drains on a pressure drop). Note that the regulator adjustment range is 0.15-0.9 MPa (20-130 psi) for automatic and differential-pressure drains.
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.