The AirTAC GFR300-15MLC2K AirTAC Filter Regulator PT1/2 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 GFR300-15MLC2K is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This 300-size unit is threaded PT1/2 (1/2 in), carries a manual drain, a 40 um standard filter element, a low-pressure regulator, a fitted round psi gauge and a reverse/check valve, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the G-series range, which spans sizes 200 to 600 with ports from 1/8 to 1 in, plus options for automatic or differential-pressure drains, a 5 um element (code W), G or NPT threads, and gauge scales in MPa, psi or bar. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and the full datasheet for your application.
| Model | GFR300-15MLC2K AirTAC Filter Regulator PT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (PT 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. |
| (blank) | PT 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) |
On a machining cell where clamps close on each workpiece, this unit gives the clamp circuit one point where water and swarf-carrying air are cleaned and the clamp pressure is set and held at the level the fixture was designed for.
On a packaging conveyor with air-driven diverters and pushers, this unit feeds the gate cylinders with air free of condensed water and grit while keeping the operating pressure steady so divert actions stay repeatable through the shift.
On a filling or capping line, this unit conditions the supply to filler and capper cylinders: the 40 um element and manual drain keep moisture out of the valves, and the low-pressure regulator lets the line run at the gentler setting those actuators need.
The decodable choices for this family are: size and port (200/300/400/600, 1/8 to 1 in) stepped against the air your line needs; drain type (manual on this unit; automatic or differential-pressure available); filter grade (40 um standard, 5 um with code W); gauge type and scale (this unit has a round psi gauge; an embedded square gauge in MPa, psi or bar scales is the standard alternative); thread (PT standard, G or NPT to order); and bracket. This unit is also the low-pressure regulator type and includes a reverse/check valve. Flow is published as curves, not a single rated figure, so please 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your line pressure and air demand and we will confirm the sizing and full datasheet figures on request.
The M in the code means the bowl is drained by hand, which suits lines that are checked regularly. If you prefer not to drain manually, the same series is available with an automatic drain (code A) or a differential-pressure drain (blank), which handles condensate without operator attention.
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.