The AirTAC GFR300C08MJF1WT 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 GFR300C08MJF1WT is a 300-size filter regulator: water and particulate filtration plus downstream pressure regulation combined in one body, so a single 1/4 in NPT connection can clean the air and hold your set pressure at the same time. This configuration carries the 5 um filter element (code W) for finer protection than the standard 40 um grade, a manual drain you open by hand to bleed collected condensate from the metal bowl, an embedded square gauge reading in MPa for setting and monitoring the outlet pressure, the standard regulator type with a 0.05-0.9 MPa (7-130 psi) adjustment range, and no mounting bracket or reverse/check valve.
This is a genuine AirTAC part from the GFR300 series, one size within the GFR range that spans sizes 200, 300, 400 and 600 with port options from 1/8 in to 1 in, a choice of drain types, 40 um or 5 um filtration, gauge scales and PT, G or NPT threads. Rated inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C08MJF1WT 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) |
Filtered, regulated air for the cylinder and vacuum-cup circuits on a carton forming and sealing conveyor, with the 5 um element guarding valves and the gauge keeping the setting visible at the machine.
Clean, stable pressure for pneumatic grippers and clamps on a robotic handling cell, where the one-body filter regulator saves panel space over separate filter and regulator units.
Point-of-use treatment at spray-gun drops in a paint shop, removing water and fine particulate ahead of the gun and letting the operator set and read line pressure on the square gauge.
Choose the size and port step against the air consumption of the circuit: this 300-size unit has a 1/4 in NPT port, and the larger the size, the larger the port and the greater the flow capacity. Drain type is a real decision: this unit has a manual drain (code M), which suits installations you visit regularly; automatic or differential-pressure drains suit unattended duty. The 5 um element (code W) is the finer choice over the 40 um standard where downstream equipment needs cleaner air. The fitted square gauge reads in MPa; psi and bar scales and an external round gauge are available options. Thread here is NPT (code T); PT is the catalogue standard with G available to order, and a bracket can be specified where this no-bracket version does not suit the mounting. Flow is published as curves, not a single rating, so 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 GFR300 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 working pressure and air consumption and we will confirm the sizing from the datasheet on request before you order.
In the code GFR300C08MJF1WT, M selects the manual drain: you open it by hand to expel condensate from the metal bowl, which suits attended installations; automatic and differential-pressure drains are the alternatives for unattended duty. W selects the 5 um filter element, one grade finer than the 40 um standard, for applications where downstream valves, cylinders or tools need cleaner air.
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.