The AirTAC GFR300C15MLC2K 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 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 GFR300C15MLC2K is a size-300 filter regulator that cleans compressed air and holds downstream pressure in a single body. This configuration is built for a 1/2 in PT port, carries the low-pressure regulator type, and uses a 40 um standard filter element to strip water and particulate before the air reaches your valves and actuators. The manual drain lets an operator bleed accumulated condensate from the metal bowl on a chosen schedule, the fitted round gauge reads outlet pressure in psi, and the built-in reverse (check) valve helps hold the downstream circuit if upstream supply is interrupted. A mounting bracket is included.
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 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, gauge style and scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300C15MLC2K AirTAC Filter Regulator PT1/2 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) |
Mounted ahead of the clamp cylinders on a CNC fixture line, this unit filters machining-air moisture and particulate and regulates the clamp circuit at the low pressure the fixture designer specified, with the psi gauge giving the operator a direct read at the machine.
On a carton-sealing or wrapping conveyor, the 1/2 in port feeds a bank of air cylinders and the check valve helps hold the circuit steady, while the manual drain lets the shift technician clear condensate during changeover.
At a central drop feeding several assembly benches, this filter regulator cleans the shop air to 40 um and holds a stable low-pressure supply for hand tools and small actuators, with the round psi gauge letting each station verify its own setting.
Start with the port and size: this unit steps up to 1/2 in PT on the size-300 body, which suits lines moving more air than 1/4 in or 3/8 in points but not needing the largest frame. Because flow is published as curves and not a single rating, send us your consumption estimate and we will confirm the sizing against the datasheet before you order. Drain choice matters: this unit is manual drain, which is the right pick where an operator is already at the machine; choose automatic or differential-pressure drain codes if you want condensate handled without attention. Filtration is the 40 um standard element; specify the W code if your valves need the 5 um option. The gauge here is the external round type on a psi scale, and the embedded square gauge with MPa, psi or bar scales is the alternative. Thread is PT as standard, with G (BSPP) and NPT available as order options, and a mounting bracket is included.
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. Tell us your application and expected air consumption and we will confirm the datasheet flow figures for this exact configuration on request before you order.
The M in the code specifies a manual drain: an operator opens the drain to remove collected condensate from the metal bowl. If you would rather not rely on manual attention, the same family is available with automatic drain (code A) or the default differential-pressure drain, and we can quote those variants 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.