The AirTAC GFR30015MLC2GK AirTAC Filter Regulator G1/2 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 PT1/2" ports, a manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR30015MLC2GK is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single 1/2 in (G1/2) body. This configuration carries the standard 40 um filter element, a manual drain so the bowl is emptied by hand as part of routine maintenance, and the low-pressure regulator type for circuits that run below standard line pressure. It is fitted with an external round gauge scaled in psi, a reverse/check valve that holds downstream pressure when upstream supply is lost, and a mounting bracket for panel or frame fixing. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The bowl on this 300 size is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600 with a choice of ports and threads (PT standard; G and NPT as order options), drain types (differential-pressure, automatic or manual), 40 um or 5 um filtration, gauge style and scale, and standard or low-pressure regulation. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR30015MLC2GK AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 130 psi) |
| Pressure type | Low-pressure 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 | Manual drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 130 psi)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Feeds and regulates the air to pneumatic clamps that hold workpieces on a CNC fixture, where the circuit is designed to run below standard line pressure and the regulator holds the set point while the filter keeps water and swarf out of the clamp cylinders.
Mounted at the drop of a packaging machine's air supply, it cleans the air and sets a reduced, stable pressure for the cylinders and grippers that sort, push and seal product, with the check valve holding the setting during brief supply dips.
Supplies filtered, regulated air to the pneumatic controls of a test bench or pilot rig that operates at reduced pressure, with the psi gauge giving the operator a clear local reading and the bracket allowing clean panel mounting.
Size and port step up together (200 / 300 / 400 / 600), so pick the size whose flow curve covers your demand at your working pressure - we can check the curve against your application before you order. For this unit the choices are already fixed: 300 size on G1/2 (G thread, with PT standard and NPT available to order), manual drain, 40 um element, low-pressure regulator type, round psi gauge and check valve. If you would prefer automatic or differential-pressure draining, a 5 um (W) element, a square embedded gauge, an MPa or bar scale, or a version without the bracket or check valve, those are decodable catalogue options - tell us and we will quote the matching code. Note that the exact regulation range of the low-pressure type is not published in the figures we hold; we confirm it on request.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes GFR flow as curves, not as a single rated number, so we do not quote a l/min or SCFM figure. Send us your working pressure and air demand and we will confirm against the datasheet curve whether this 300 size on G1/2 is correctly sized - this confirmation is available on request before you order.
Manual drain (code M) means the filtered water collects in the polycarbonate bowl until an operator opens the drain by hand, which suits attended installations with a regular maintenance round; automatic and differential-pressure drains are catalogue alternatives if you prefer unattended draining. The L in the code also marks the low-pressure regulator type, intended for circuits running below standard line pressure - its exact regulation range is not published in our figures, so we confirm it on request.
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.