The AirTAC GFR300C15ALF2WG AirTAC Filter Regulator G1/2, 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 AirTAC GFR300 series is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration, GFR300C15ALF2WG, is the size 300 unit with a 1/2 in G (BSPP) port, the 5 um filter element (the W grade, against the 40 um standard), an automatic drain that expels collected condensate without manual attention, and the low-pressure regulator type (L). It carries the embedded square gauge with a psi scale, has no reverse/check valve fitted, is supplied with a mounting bracket, and has a metal bowl. 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. GFR300 is one step in the GFR range, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in and thread options in PT, G (BSPP) and NPT; drains come as differential-pressure, automatic or manual, and filter grades as 40 um standard or 5 um optional. AirTAC publishes flow for this series as curves rather than a single rated figure, so we confirm flow and other datasheet figures on request before you order.
| Model | GFR300C15ALF2WG AirTAC Filter Regulator G1/2, 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) |
Feeds filtered, regulated air to the clamping cylinders on a pneumatic press, with the low-pressure regulator set to the circuit's reduced working pressure and the 5 um element protecting cylinder seals from water and particulate.
Conditions the air feeding grippers and diverters on a packaging conveyor: the 5 um element cleans the supply, the regulator holds a steady reduced pressure, and the automatic drain clears collected condensate without daily attention.
Serves as a point-of-use filter regulator on a laboratory compressed-air drop, delivering clean, reduced-pressure air to bench instruments while the psi-scale square gauge shows the set pressure at a glance.
Every choice in GFR300C15ALF2WG is decodable from the code. The 300 size with its 1/2 in G port is the mid step of the range; the right size and port depend on your air demand, so check them against the published flow curves. The W grade gives 5 um filtration where finer protection matters; the standard grade is 40 um. The A drain is automatic, against the differential-pressure default and the manual M option. The L marks the low-pressure regulator type, and the F2 square gauge reads in psi (MPa and bar scales are the alternatives). The trailing G orders the G (BSPP) thread; PT is the standard and NPT is also an option. A mounting bracket is included.
Because AirTAC publishes flow only 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 GFR300 flow as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your line pressure and air demand and we will confirm from the datasheet whether this size 300 unit with its 1/2 in G port suits your application before you order.
It marks the low-pressure regulator type: this unit regulates at reduced pressures rather than as a standard type. The exact low-pressure range is not published on the sheet we work from, so ask us to confirm the setting window for your circuit. The 1.0 MPa (145 psi) maximum inlet pressure still applies, and the F2 in the code means the fitted square gauge reads in psi.
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.