The AirTAC GFR300C08MLF2W AirTAC Filter Regulator PT1/4 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.
GFR300C08MLF2W is an AirTAC GFR300 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is a PT1/4 (1/4 in) unit with the 5 um filter element (the W grade, instead of the 40 um standard), a manual drain, the low-pressure regulator type, an embedded square gauge scaled in psi, the mounting bracket included, and no reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi), the working temperature range is -5 to 70 C (non-freezing), and the size 300 bowl is polycarbonate (PC).
It is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filtration, gauge scales in MPa, psi or bar, and PT, G or NPT threads. AirTAC publishes flow only as curves rather than a single rating, so we confirm sizing and datasheet figures on request before you order.
| Model | GFR300C08MLF2W AirTAC Filter Regulator PT1/4 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. |
|---|---|
| C0 | 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-C0 (two-unit set) |
Feeds spray guns and air-assisted coating equipment that run on gently regulated air. The 5 um element keeps water and particles out of the finish, and the manual drain is purged at the end of each shift to clear accumulated moisture from the bowl.
Suits delicate gripper and light clamp circuits on assembly cells that must not be fed full line pressure. The embedded square psi gauge lets technicians set and verify the working pressure at a glance, and the included bracket mounts the unit to the cell frame.
Provides filtered, low-pressure air to test fixtures and instruments on a bench setup. The 5 um element protects fine orifices and sensitive gear from water and particulate, and the manual drain is opened between test sessions.
Size and port: GFR300 is the mid size, here with a PT1/4 port; step down to GFR200 or up to GFR400/GFR600 when your flow curve demands it - ask us to check the curve against your air consumption, since AirTAC publishes flow as curves rather than one rated figure. Drain: this unit is manual (M), so the bowl is drained by hand at intervals; automatic (A) and differential-pressure (blank) drains are catalogue alternatives. Filtration: the W code selects the 5 um element instead of the 40 um standard. Gauge: the embedded square gauge on this code reads psi; MPa and bar scales, and an external round gauge, are options. Thread: PT is standard here, with G (BSPP) and NPT orderable as specifications, and the mounting bracket is included. Regulation: this is the low-pressure (L) type - its exact adjustment range is not published, so confirm it with us against your set pressure 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 there is no honest single number to quote. Send us your operating pressure and air consumption and we will confirm sizing against the datasheet curve on request, before you order.
The drain is opened by hand to purge accumulated water from the bowl, so it needs a place in your maintenance routine. If you would rather not rely on operator discipline, the same family is available with an automatic (A) or differential-pressure drain - ask us to quote the alternative code.
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.