The AirTAC GFR300C08JF1WT AirTAC Filter Regulator NPT1/4, 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 GFR300C08JF1WT is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. It filters compressed air down to 5 um (the optional W grade, finer than the 40 um standard element) while regulating downstream pressure across 0.15-0.9 MPa (20-130 psi). This configuration has a 1/4 in NPT port, the differential-pressure drain (the catalogue default drain type), an embedded square gauge scaled in MPa, a standard regulator without a reverse/check valve, and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing. The bowl on this 300 size is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options across the range include manual or automatic drains, a 40 um standard or 5 um (W) element, square or round gauges with MPa, psi or bar scales, G (BSPP) or NPT threads in place of the PT standard, and a mounting bracket. Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR300C08JF1WT AirTAC Filter Regulator NPT1/4, 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. |
|---|---|
| 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 clean, regulated air for a CNC machine's tool changers and pneumatic clamps: the 5 um element protects fine valves from particles while the regulator holds a steady setting on a 1/4 in drop.
Feeding directional valves and cylinders on a cartoning or wrapping line, where filtered, regulated air keeps pick-and-place and sealing motions repeatable through one compact single-body unit.
Supplying lab automation and test fixtures where finer 5 um filtration and a stable regulated pressure protect sensitive instruments and actuators on a 1/4 in NPT circuit.
Choose the size by port and flow: this unit is size 300 with a 1/4 in NPT port; larger sizes (400, 600) carry larger ports and more flow, but flow is published as curves, not a single rating, so confirm sizing against your application before ordering. Drain options are differential-pressure (fitted here as the default), automatic (A) or manual (M). Filter grade is 5 um in this W configuration; the standard element is 40 um. The embedded square gauge scaled in MPa is fitted; an external round gauge with MPa, psi or bar scales is optional. Thread is NPT here; PT is the standard and G (BSPP) is also a catalogue option. A mounting bracket is optional - this unit is ordered without one (J).
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 number here. Tell us your application and we will confirm the flow and sizing from the datasheet on request.
The W in the code selects the optional 5 um filter grade; the standard GFR element is 40 um. Choose 5 um where downstream valves or instruments need finer protection, and 40 um for general plant air. Both grades are catalogue options across the GFR range.
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.