The AirTAC GFR300C15MLF2W AirTAC Filter Regulator PT1/2, 5 um 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 GFR300C15MLF2W is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and holds downstream pressure at a set point. This configuration is the low-pressure regulator type with a 5 um filter element (40 um is the standard alternative), a manual drain on the metal bowl, an embedded square gauge reading in psi, the mounting bracket included, and a PT1/2 port with PT thread. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The exact adjustment range for the low-pressure type is not published in our data, so treat the set point as application-specific and confirm it with us.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports stepping from 1/8 in up to 1 in, and each size can be ordered with a different drain type, filter grade, gauge style and scale, thread (PT standard, with G and NPT as catalogue options), and bracket choice. Flow is published as curves rather than a single rated figure, so send us your application and we will confirm the sizing and datasheet figures on request.
| Model | GFR300C15MLF2W AirTAC Filter Regulator PT1/2, 5 um |
|---|---|
| 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) |
On CNC fixture circuits that clamp with air at a deliberately low set point, this unit filters the shop air and holds the regulator at the clamping pressure the fixture was designed for, with the psi gauge giving the operator a direct readout at the machine.
Packaging lines run cylinder- and gripper-driven sealing heads all shift long; a filter regulator at the line drop keeps water and debris out of the valves and pins the supply pressure so case erecting and sealing motions stay repeatable.
Finishing booths need air that is free of water and fine particulate before it reaches the gun, regulated to the gentle pressure a spray application calls for; the 5 um element and low-pressure regulation in this unit serve exactly that job on a 1/2 in drop.
Choose the size by port and required flow: GFR sizes 200, 300, 400 and 600 step up in port from 1/8 to 1 in, and this unit sits at the 1/2 in PT port. Drain type is a real decision: manual (this unit) needs someone to open the drain, automatic drains on its own, and the differential-pressure default bleeds when the pressure drop warrants it. Filter grade is 40 um standard or 5 um (this unit, code W) for finer particulate. The gauge is the embedded square type with MPa, psi or bar scales - this one reads psi - and an external round gauge is optional. Thread is PT as standard with G (BSPP) and NPT as order options, and the bracket is included. Flow for this family is published as curves, not a single rated figure, so 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. 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 one number. Send us your line pressure, set point and downstream demand and we will confirm the flow from the datasheet on request.
This unit has a manual drain: the metal bowl collects water and particulate and someone opens the drain to expel it. Choose manual where the unit is accessible and checked as part of a routine; choose automatic where equipment runs unattended. The differential-pressure drain is the catalogue default.
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.