The AirTAC GFR300C08MJF1WTK 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 GFR300C08MJF1WTK is an AirTAC GFR300 filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single body. This configuration carries a 1/4 in NPT port, a 5 um filter element (code W), a manual drain on the metal bowl, an embedded square gauge scaled in MPa, and a built-in check valve (code K) that blocks reverse flow through the unit. No mounting bracket is fitted (code J). Maximum inlet pressure is 1.0 MPa (145 psi), the regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and the orderable options include 40 um or 5 um filtration, differential-pressure, automatic or manual drains, square or round gauges scaled in MPa, psi or bar, G (BSPP) or NPT threads in place of the PT standard, and a reverse valve. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application on request.
| Model | GFR300C08MJF1WTK 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 filter regulator feeding the directional valves and air tools on a CNC machining cell, with the 5 um element and the embedded square MPa gauge giving clean air and a readable set pressure at the machine.
Filtering and regulating supply air to the pick-and-place cylinders of a cartoning or case-packing line, with the manual drain suiting a shift-start condensate check on the metal bowl.
A compact filter regulator inside a machine control panel, supplying pilot valves and instruments at a stable set pressure while the built-in check valve blocks reverse flow through the unit.
Size and port step together with the flow your line needs: this unit is size 300 with a 1/4 in NPT port, and larger sizes carry larger ports and more flow. Because AirTAC publishes flow as curves rather than one rating, sizing should be checked against those curves - we will do that with you before you order. Drain type is a real choice: manual drain means an operator empties collected condensate by hand, while automatic and differential-pressure drains discharge continuously; manual-drain versions are rated from 0.05 MPa (7-130 psi) while automatic and differential-pressure versions start at 0.15 MPa (20-130 psi). This unit carries the 5 um (W) element against the 40 um standard. The embedded square gauge reads in MPa; an external round gauge and psi or bar scales are options. Thread here is NPT - PT is the AirTAC standard and G (BSPP) is orderable. Brackets are optional and this configuration omits the bracket (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 GFR-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your operating pressure and required flow and we will confirm the datasheet curve and sizing for this 1/4 in NPT unit on request.
This configuration carries code M - a manual drain that an operator opens by hand to empty collected condensate from the metal bowl. The same GFR300 size is available with automatic or differential-pressure drains, and with the 40 um standard element instead of this 5 um (W) element.
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.