The AirTAC GFR300C08F1WT AirTAC Filter Regulator NPT1/4 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 GFR300C08F1WT is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration is built around a 1/4 in NPT port in the GFR300 size, with the finer 5 um filtering element (the W grade, in place of the 40 um standard), a differential-pressure drain, and an embedded square gauge reading in MPa. The regulator is the standard type with a 0.15-0.9 MPa (20-130 psi) adjustment range, the bowl is metal, a mounting bracket is included, and no reverse/check valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and can be ordered with manual or automatic drains, 40 um or 5 um elements, square or round gauges in MPa, psi or bar scales, and PT, G or NPT threads - PT being the standard. Published flow data appears as curves rather than a single rating, so ask us to confirm the datasheet and the sizing for your application on request.
| Model | GFR300C08F1WT AirTAC Filter Regulator NPT1/4 |
|---|---|
| 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Point-of-use air preparation for a CNC machining centre: the 5 um element removes water and fine particulate before it reaches tool-clamp and chip-clearing cylinders, while the regulator holds the setting the programmer dials in for repeatable clamping.
Clean, regulated air for carton-erecting and case-sealing cylinders on a packaging conveyor, where the square MPa gauge lets line staff verify the setting at a glance and the differential-pressure drain clears condensate during production runs.
Filtered, regulated air to spray guns in a finishing booth: the 5 um grade protects the gun and the finish from water and dirt, and the regulator holds the atomising pressure the operator sets at the booth.
Start with the size and port against the air demand of the line: this unit is the GFR300 size with a 1/4 in NPT port, and the larger 400 and 600 sizes carry bigger ports and more flow - we can confirm curve figures for any size on request. Drain choice matters: differential-pressure (as fitted here) clears condensate as air passes, automatic (code A) drains on its own, and manual (code M) needs operator attention. Filter grade is 40 um standard or 5 um with the W code; this model carries the 5 um element for finer protection at the point of use. Gauge options are the embedded square gauge (fitted here, MPa scale) or an external round gauge in MPa, psi or bar. Thread is NPT on this unit, with PT as the standard and G (BSPP) also available as order options, and a bracket is included (code J omits it). Flow is published as curves, not a single rating, so send us your inlet pressure and downstream demand and we will confirm sizing against the application before you order.
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 there is no one l/min or SCFM number we can quote honestly. Tell us your inlet pressure and the demand of the tools or cylinders downstream, and we will confirm the sizing from the datasheet on request before you order.
The W code fits the finer 5 um element, which suits points of use feeding instruments, valves or spray equipment where water and fine dirt cause trouble. The 40 um element is the standard choice for general shop-air drops, and both grades are available across the GFR family. This unit pairs the 5 um grade with a differential-pressure drain, a metal bowl and an embedded square gauge reading in MPa.
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.