The AirTAC GFR300C15MC2G 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 GFR300C15MC2G is a size 300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a G1/2 (BSPP) port, a manual drain bowl, standard 40 um filtration, a fitted round gauge reading in psi, and a standard regulator adjustable 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). A mounting bracket is included; no reverse/check valve is fitted on this code.
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. Across the family you can order automatic, manual or differential-pressure drains, a 5 um (W) filter grade alternative, embedded square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR300C15MC2G 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) |
Clean, regulated air feeding tool-clamp and chip-clearing cylinders on a CNC machining centre, with the manual drain suited to a shift-start checklist at the machine.
Conditioned air for gripper and pusher cylinders on a carton packaging conveyor, where the psi gauge lets line staff verify set pressure at a glance.
Filtered, regulated air supplying pneumatic valve actuators on a bottling line, with the 40 um grade protecting valve seals from water and particulate carryover.
Start with size and port: the 300 size with a G1/2 port sits mid-range in the GFR family, and the right step depends on the air consumption of the downstream circuit - we can check the published flow curves against your demand if you share the application. Choose the drain to match maintenance practice: this code has a manual drain, which suits attended installations where an operator drains the bowl on a routine; automatic and differential-pressure drains are available on other codes for unattended duty. Filtration is 40 um standard; order the W variant if you need 5 um. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are alternatives. Thread here is G (BSPP); PT is the standard thread and G/NPT are order options. A mounting bracket is included on this code.
Because flow is published as curves rather than a single rated figure, 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, not as a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and datasheet figures for this exact model on request.
The M in the code specifies a manual drain bowl: an operator opens the drain to expel collected water and dirt. If the unit will be installed where nobody drains it routinely, other GFR300 codes offer automatic or differential-pressure drains - ask us for the matching model.
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.