The AirTAC AirTAC GFR300C10MJF2K Filter Regulator 3/8in PT 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 GFR300C10MJF2K is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a PT3/8 port, a manual drain, a 40 um filter element, an embedded square gauge reading in psi, and a built-in reverse (check) valve that holds downstream pressure if the supply drops. No mounting bracket is included.
It is a genuine AirTAC part, rated for a maximum inlet pressure of 1.0 MPa (145 psi) and operating temperatures of -5 to 70 C (non-freezing), with a regulation range of 0.05-0.9 MPa (7-130 psi) on this manual-drain version. The G-series runs from size 200 to 600 with ports from 1/8 to 1 inch, PT, G or NPT threads, and a choice of drains, filter grades and gauges. Flow is published as curves rather than a single rating, so we confirm datasheet figures on request.
| Model | AirTAC GFR300C10MJF2K Filter Regulator 3/8in PT |
|---|---|
| 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) |
Point-of-use conditioning ahead of a directional valve feeding a press or clamp cylinder: the 40 um element strips water and swarf from the shop line while the regulator holds the cylinder pressure the tool was set up for, and the check valve keeps the setting from bleeding back if the supply dips.
Feeding the cylinder bank of a cartoning or wrapping line, where the machine builder specifies one set pressure for all actuators. The 3/8 in PT port matches typical machine drops, the square psi gauge lets operators verify set-up at a glance, and the manual drain suits a machine checked at every shift start.
Conditioning the pilot and actuation air for solenoid valves on a CNC or special-purpose machine, where chips and condensate in the supply cause valve sticking. The filter-regulator in one body saves panel space, and the psi-scaled gauge supports quick verification against the valve rating.
Size 300 with a 3/8 in PT port is the middle step of the G-series: more capacity than size 200 at 1/4 in without moving up to size 400, so match the size to your flow demand and downstream piping. Because AirTAC publishes flow as curves rather than a single rating, ask us to confirm sizing against your application before ordering. The real decodable choices on this family are: drain type (manual here, which also gives the wider 0.05-0.9 MPa regulation range; automatic and differential-pressure drains are alternatives), 40 um standard element versus the 5 um W option, gauge style and scale (embedded square gauge in psi here; MPa or bar scales and an external round gauge are options), PT standard thread with G or NPT as order options, and bracket versus no-bracket mounting.
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, not as a single rated figure, so we do not quote a number here. Send us your line pressure, set pressure and air consumption, and we will confirm the flow and sizing from the datasheet on request before you order.
Manual drain means the bowl is drained by hand, which suits positions that are checked regularly as part of a routine. On this manual-drain version the regulation range is 0.05-0.9 MPa (7-130 psi). If you would rather not drain by hand, the same family is available with automatic or 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.