The AirTAC GFR300C15MJC2G AirTAC Filter Regulator G1/2, Manual Drain 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 GFR300C15MJC2G is a filter regulator: water and particulate filtration plus downstream pressure regulation combined in a single 300-size body with G1/2 (BSPP) ports. This configuration carries a 40 um standard filter element, a manual drain on the bowl, a standard regulator with an adjustment range of 0.05-0.9 MPa (7-130 psi), and a round pressure gauge reading in psi. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the polycarbonate bowl suits the 300 size (600-size units use an aluminium alloy bowl). No mounting bracket is included and no reverse/check valve is fitted in this version.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of manual, automatic or differential-pressure drains, a 5 um optional element (code W), square or round gauges with MPa, psi or bar scales, and G or NPT thread options alongside the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C15MJC2G AirTAC Filter Regulator G1/2, Manual Drain |
|---|---|
| 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) |
Feeds filtered, regulated air to the tool-clamp and chip-clearing circuits on a CNC machining centre, where the manual drain lets the operator bleed accumulated condensate at shift start and the psi gauge gives a local setpoint readout at the machine.
Sits in the air drop feeding the pusher and clamp cylinders on a carton packaging line, removing water and pipe scale before they reach the seals and holding a steady regulated pressure so case-eject strokes stay consistent through the shift.
Conditions the supply line at a paint booth, filtering compressor moisture and particulates out of the atomising air and regulating it to the setting the spray equipment calls for, with the round psi gauge letting the operator verify the setpoint at a glance.
Choose the size step (200/300/400/600) and port to match the air consumption of the circuit downstream - larger sizes carry larger ports and more flow, but the catalogue publishes flow as curves, not a single rating, so have us check the curve against your demand before you order. Drain type is a real operating choice: manual means someone opens the drain periodically, automatic and differential-pressure drains handle it for you; this unit is the manual-drain version. Filter grade is 40 um standard or 5 um with code W - pick 5 um only where downstream equipment needs finer filtration. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales; this unit carries a round psi gauge. Thread is PT as the catalogue standard, with G (BSPP) and NPT as order options - this unit is G-threaded. Brackets are optional on GFR units, and this version is supplied without one. Confirm sizing against the application with us 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 GFR series as characteristic curves rather than a single rated figure, so there is no one rated-flow number we can honestly quote. Send us your application's air demand and we will confirm the sizing from the datasheet curves before you order.
The M in the code specifies a manual drain: condensate collected in the bowl is released by opening the drain by hand, which suits lines that are checked regularly. AirTAC also offers automatic (code A) and differential-pressure (blank) drains on GFR units that remove condensate without operator action - tell us which suits your maintenance routine and we can quote that variant.
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.