The AirTAC GFR300C15MLF2WK 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 GFR300C15MLF2WK is an AirTAC GFR300 filter regulator: filtration (water and particulate removal) and pressure regulation combined in one body, with a drain bowl but no lubricator. This configuration is a size 300 unit on a PT1/2 (1/2 in) PT-threaded port, with a manual drain for the metal bowl, a 5 um filtration grade (finer than the 40 um standard), a low-pressure regulator type, an embedded square gauge reading in psi, a reverse/check valve fitted, and a mounting bracket included. Maximum working (inlet) pressure is 1.0 MPa (145 psi), with an operating temperature of -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, plus drain, filter-grade, gauge-scale, thread and bracket options, so a matching configuration can be specified for most circuits. Flow is published as curves rather than a single rating, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C15MLF2WK 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) |
Feeding wrapper, sealer and carton-closing cylinders on a packaging line, where air is cleaned of water and fine particles and held at a reduced, stable set pressure before the valves.
Supplying a pneumatic clamping or hold-down circuit on a machining fixture, where the job calls for a gentler regulated pressure than the main shop-air line delivers, with clean, dry air to the clamp cylinders.
Actuating diverter gates and pusher cylinders along a conveyor line, with the 5 um element protecting directional valves from fine contamination and the check valve holding the downstream circuit if supply dips.
Size and port step up together: 200 through 600 cover 1/8 in to 1 in, so choose the size whose flow curve covers your demand - ask us to check the curve against your application before ordering. This unit is the low-pressure type; its exact adjustment range is not published in the material we hold, so confirm your set pressure with us first. Drain here is manual: the metal bowl is emptied by hand, where automatic and differential-pressure versions drain themselves. The 5 um (W) grade suits finer filtration than the 40 um standard. The embedded square gauge reads psi; MPa and bar scales are alternatives, and an external round gauge is optional. PT is the standard thread with G and NPT available to order, and the 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 this series as curves, not as a single rated figure, so we do not quote a number here. Tell us your operating pressure and air demand and we will confirm the sizing from the datasheet on request before you order.
The M in the code means the metal bowl is drained by hand, which suits attended installations on a maintenance round. AirTAC also offers automatic (A) and differential-pressure (blank) drains on this family that discharge condensate without operator action - ask us for those variants if the unit is mounted in an awkward or unattended spot.
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.