The AirTAC GFR300C15F3WT AirTAC Filter Regulator NPT1/2, 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 GFR300C15F3WT is a size 300 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration carries a 1/2 in NPT port, a 5 um filtration element (finer than the 40 um standard), a differential-pressure drain that bleeds condensate automatically as flow passes through, an embedded square gauge reading in bar, and a mounting bracket. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature of -5 to 70 C (non-freezing).
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um or 5 um filtration, differential-pressure, automatic or manual drains, gauge scale options in MPa, psi or bar, and PT, G or NPT threads. At size 300 the bowl is polycarbonate (PC). Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C15F3WT AirTAC Filter Regulator NPT1/2, 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) |
Mounted at the drop feeding a CNC machining centre's pneumatic valves and clamps, this unit cleans the shop air down to 5 um and holds a steady regulated pressure so tool-change and clamping cycles stay consistent through the shift.
Installed on the air drop serving a cartoning or case-packing conveyor's cylinders, it strips water and fine particles before they reach the actuators and keeps the set pressure stable as the line cycles, with the bar gauge giving operators a quick visual check.
Fitted at individual workstations on an assembly plant's compressed-air ring main, it conditions the supply for air tools and small actuators, with the differential-pressure drain handling condensate during continuous production and the bracket allowing tidy panel mounting.
Size 300 with a 1/2 in port sits in the middle of the GFR range; step up to 400 or 600, or down to 200, according to the flow your line needs - we can check the published flow curves against your demand before you order. The 5 um element on this model suits air that feeds sensitive components; the 40 um standard grade is the usual choice for general plant air. Drain is differential-pressure here, which suits a steady, continuous flow; pick automatic for unattended duty or manual where checks are already scheduled. The square gauge reads in bar (MPa, psi and round-gauge options exist), the thread is NPT (PT is the standard; G and NPT are order options), and a bracket is included.
Because AirTAC publishes flow only as curves and not as a single rated figure, we do not quote a flow number here - send us your application details and we will confirm sizing and the full datasheet on request.
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 GFR300 series as curves, not as a single rated number, so we do not quote a figure here. Send us your application details - required downstream pressure and expected air demand - and we will confirm the flow and the full datasheet on request before you order.
The code W in GFR300C15F3WT selects the 5 um filtration element instead of the 40 um standard grade, which suits air feeding finer components; the blank drain position is the differential-pressure drain, which passes condensate out automatically as air flows through. If you prefer hands-off drainage with no airflow dependency, ask about the automatic-drain version of the same unit.
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.