The AirTAC GFR300C15F2WGK AirTAC Filter Regulator 1/2 in, 5 um Element 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 GFR300C15F2WGK is an AirTAC GFR300 filter regulator: a single body that first strips water and particulate from compressed air, then regulates downstream pressure. This configuration carries a G1/2 (BSPP) port, a fine 5 um filter element (code W, against the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element rises, an embedded square gauge reading in psi, a fitted reverse/check valve that holds downstream pressure when the supply is lost, and a mounting bracket included in the box. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The standard regulator adjusts from 0.15 to 0.9 MPa (20-130 psi).
This is a genuine AirTAC part from the GFR300 size class, one of four sizes (200/300/400/600) that step up in port and flow capacity, with PT, G and NPT thread options, manual, automatic or differential-pressure drains, 40 um or 5 um elements, gauge and scale choices, and a low-pressure regulator variant. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures against your application before you order.
| Model | GFR300C15F2WGK AirTAC Filter Regulator 1/2 in, 5 um Element |
|---|---|
| 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 clean, regulated air to the tool-change clamps and pneumatic actuators on a CNC mill or lathe, with the 5 um element protecting spool valves from scale and pipe rust and the check valve holding clamp pressure through a compressor stoppage.
Mounted at the drop to a carton-forming and sealing machine, regulating the supply to sealing jaws and vacuum generators; the fine element keeps moisture carryover out of the seal cylinders and the psi gauge gives operators a setpoint they can read at a glance.
Regulating air to pop-up diverters and stop-gate cylinders on a warehouse conveyor line, where the differential-pressure drain keeps condensate moving out unattended and the bracket fixes the unit to the frame beside the valve manifold.
Size and port are the first decision: the GFR300 with its 1/2 in port sits mid-range in the 200/300/400/600 ladder, and the right step depends on the air demand of the circuit - we can check the published flow curves against your consumption if you send the numbers. This unit already carries the fine 5 um element (W code); the standard grade is 40 um, so choose 5 um where downstream valves, cylinders or instruments need cleaner air. The differential-pressure drain is the fit-and-forget choice; automatic (A) and manual (M) drains are orderable alternatives. The square gauge here reads psi; MPa and bar scales are available, and an external round gauge is an option. The fitted check valve (K) keeps the downstream side pressurised during supply loss - delete it if you want free reverse flow. The G thread here is BSPP; PT is the catalogue standard and NPT is orderable for US piping. A bracket is included.
One honest note on sizing: AirTAC publishes flow for the GFR series as curves, not a single rated number, so we do not quote a flow figure here. Tell us your line pressure, required downstream setting and air consumption, and we will confirm the correct size from the datasheet before you order.
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 number here. Send us your line pressure, required downstream setting and air consumption, and we will confirm the flow from the datasheet and check that the GFR300 at 1/2 in is the right size for your application before you order.
The W in the code specifies the fine 5 um element instead of the 40 um standard, for circuits with sensitive valves or instruments, and the K specifies a fitted reverse/check valve that holds downstream pressure when the air supply is lost. Both are order-time choices: the same GFR300 body is available with the 40 um element and without the check valve, so tell us which combination you need and we will quote the correct 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.