The AirTAC GFR300C10MJC2W AirTAC Filter Regulator 3/8 in 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 GFR300C10MJC2W is an AirTAC GFR-series filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This size 300 unit is threaded PT3/8 (3/8 in), carries a 5 um filter element (code W) and a manual drain bowl, and is fitted with an external round pressure gauge on the psi scale. The standard regulator adjusts from 0.05 to 0.9 MPa (7-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate (PC) bowl is the standard material for size 300.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, and embedded square or external round gauges with MPa, psi or bar scales. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR300C10MJC2W AirTAC Filter Regulator 3/8 in 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) |
On a machine-shop CNC cell, this unit conditions and regulates the 3/8 in supply feeding air clamps and vises, with the 5 um element protecting the clamp cylinders and the psi gauge letting the setter dial in clamp pressure at the machine.
On a packaging conveyor line, the unit filters and regulates air to the case erector and taping heads, with the manual drain bled at shift start to keep accumulated water out of the sealing cylinders.
At a paint booth drop, the 5 um filtration helps keep particulates out of the atomizing air while the regulator holds a steady, repeatable gun pressure read directly off the round psi gauge.
Size 300 with a PT3/8 port is the middle step of the GFR range; step up to 400 or 600 when the circuit demands more flow, or down to 200 for compact drops. The 5 um element (code W) is the right choice where finer particulate protection matters; the 40 um standard element suits general-purpose supply. The manual drain suits points where an operator can bleed the bowl on a routine; choose automatic or differential-pressure drains where the unit is hard to reach. The round gauge here reads in psi; square embedded gauges and MPa or bar scales are alternative options. PT is the standard thread, with G (BSPP) and NPT available as order options, and this configuration omits the mounting bracket.
One honest note on sizing: AirTAC publishes flow as curves, not a single rated figure, so we do not quote a flow number here. Send us your application details and we will confirm the correct size against the datasheet curves 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 GFR300 series as curves rather than a single rated figure, so we do not quote a flow number on the page. Tell us your application and we will confirm the flow from the datasheet curves on request before you order.
The M in the code specifies a manual drain bowl: condensate is released by an operator rather than automatically. It suits accessible installation points on a routine maintenance round. If the unit will be mounted out of reach, the automatic (A) or differential-pressure (blank) drain options are the better decode, and they also widen the regulator adjustment range to 0.15-0.9 MPa (20-130 psi) versus 0.05-0.9 MPa (7-130 psi) for this manual-drain version.
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.