The AirTAC GFR300C15MLF2 AirTAC Filter Regulator 1/2 in PT Low-Pressure 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 GFR300C15MLF2 is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This unit is built on the GFR300 size with PT1/2 (1/2 in) PT ports, a manual drain on the metal bowl, a 40 um filter element, the low-pressure regulator type, and an embedded square gauge scaled in psi. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. A mounting bracket is included; no reverse (check) valve is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options that include automatic, manual or differential-pressure drains, a 5 um element (code W), gauge scales in MPa, psi or bar, G (BSPP) or NPT threads, and units ordered without a bracket. Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR300C15MLF2 AirTAC Filter Regulator 1/2 in PT Low-Pressure |
|---|---|
| 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 air preparation for the clamping and tool-change cylinders on a machining centre: the 40 um element keeps water and pipe scale out of the fixture valves while the low-pressure regulator holds the circuit at the pressure the fixture designer specified, with the square psi gauge giving a local reading.
Supplying the divert gates, stoppers and pushers along a packaging or distribution conveyor line: one filter regulator at the line drop conditions the air and sets the working pressure for the whole gate group, with the manual drain bled during scheduled maintenance rounds.
Conditioning the air feeding pneumatic quarter-turn actuators and solenoid valves on a process skid: the filter stops particulate reaching the valve seats, the regulator sets the actuator pressure, and the embedded square gauge lets operators check supply pressure at the skid.
Choose the size and port against the air demand of the circuit: this unit is size 300 with PT1/2 (1/2 in) PT ports, and the family steps through sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in. Drain type matters: this configuration uses a manual drain, which needs the bowl bled by hand at intervals; automatic and differential-pressure drains are available in the family where the unit cannot be visited regularly. The 40 um element fitted here is the standard grade; specify code W for the optional 5 um element where finer filtration is needed. The embedded square gauge is scaled in psi, with MPa and bar scales and an external round gauge as options. PT thread is standard on this model, with G (BSPP) and NPT available to order, and a mounting bracket is included. Flow for this series is published as curves, not a single rating, so send us your application details and we will confirm sizing against the datasheet 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 GFR series as curves rather than a single rated figure, so we do not quote a number here. Send us your application details - inlet pressure, downstream demand and allowable pressure drop - and we will confirm the flow and the full datasheet for this model on request.
The M in the code selects a manual drain on the bowl: condensate collects in the bowl and must be bled off by hand at intervals. If the installation is hard to reach, the GFR family can be ordered with an automatic or differential-pressure drain instead - ask us when specifying.
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.