The AirTAC GFR300C10MLF2W AirTAC Filter Regulator PT3/8, 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 GFR300C10MLF2W is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation combined in a single body. This configuration carries a PT3/8 (3/8 in) port with PT thread as standard, a fine 5 um filter element (the W grade, against the 40 um standard), a manual drain for controlled bowl purging, the low-pressure regulator type, an embedded square gauge reading in psi, a mounting bracket, and no reverse/check valve. The bowl on this size is metal. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR series spans sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, a choice of drain type (differential-pressure, automatic or manual), 40 um or 5 um filtration, gauge scale options in MPa, psi or bar, and G (BSPP) or NPT threads as order options. Because the catalogue publishes flow only as curves rather than a single rated figure, we confirm flow and datasheet figures for your application on request.
| Model | GFR300C10MLF2W AirTAC Filter Regulator PT3/8, 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) |
Point-of-use filtration and regulation ahead of spray guns in a woodshop or finish booth: the 5 um element trims water and particulate that would spoil a finish, while the low-pressure regulator holds the gun supply steady and the manual drain lets operators purge collected condensate between sessions.
Feeding pneumatic cylinders and actuators on a carton-forming or case-packing conveyor, where one body cleans the air to 5 um, sets a stable low working pressure for gentle product handling, and the psi gauge gives line staff a readable setpoint at the machine.
Conditioning supply air on loom and winding machines in a textile plant: the filter-regulator drops the header pressure to the level the machine's low-pressure circuit expects, the 5 um grade protects jet and guide components, and the included bracket mounts the unit at the machine frame.
Size and port are the first decision: step up through 200, 300, 400 and 600 as your port and air demand grow - this unit sits at size 300 with a 3/8 in PT port. For the element, 40 um is the standard grade and the 5 um W grade fitted here suits lines where finer particulate removal matters; check downstream equipment sensitivity before choosing. Drain choice matters: manual drain (as fitted) means an operator purges the bowl, while automatic and differential-pressure drains discharge condensate without intervention. Gauge scale is selectable (MPa, psi or bar) - this unit carries the embedded square gauge in psi, with an external round gauge available as an option. Thread is PT as standard, with G (BSPP) and NPT as order options, and a bracket is included on this configuration. Note that this is the low-pressure regulator type; its exact adjustment range is not published in the catalogue we transcribe, so confirm it with us. Flow is published as curves, not a single rating - 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 a rated flow, Cv or l/min number for this unit. Tell us your application and operating pressure and we will confirm the relevant flow and datasheet figures for the GFR300 at 3/8 in on request before you order.
This configuration carries the M code: a manual drain you open by hand to purge accumulated condensate from the bowl. It suits installations that are checked regularly. If the unit will sit unattended, the automatic drain (code A) or the differential-pressure drain (the default, blank code) discharges condensate without an operator - both are available in the same GFR300 series.
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.