The AirTAC GFR300C15AC1WT AirTAC Filter Regulator NPT1/2 5um Auto Drain 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 GFR300C15AC1WT is a 300-size filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built with a 1/2 in NPT port, a fine 5 um filter element, an automatic drain that expels collected condensate without manual attention, and a round pressure gauge with an MPa scale. The standard regulator adjusts outlet pressure across 0.15-0.9 MPa (20-130 psi), the polycarbonate bowl suits this size, and a mounting bracket is included for panel or wall fixing.
This is a genuine AirTAC part from the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with larger ports and higher flow capability at each step up. Alternative configurations cover manual or differential-pressure drains, a 40 um standard element, square embedded gauges, psi or bar scales, and G (BSPP) or PT threads to order. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR300C15AC1WT AirTAC Filter Regulator NPT1/2 5um Auto Drain |
|---|---|
| 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) |
Installed at a 1/2 in branch take-off from the main header, it cleans the air and holds a steady regulated pressure for the tools and actuators fed from that drop, with the automatic drain handling condensate in continuously running plant air.
On a packaging line where cylinders index cartons and drive diverters, the 5 um element protects valve seals from particulate and water while the regulator keeps cylinder speed and clamping force consistent shift after shift.
Feeding pneumatic test rigs and laboratory fixtures, the fine 5 um filtration and the round MPa gauge give operators clean air and a clear pressure reference, with the bracket allowing tidy bench or frame mounting.
Start with the port and size step: this unit is 300 size with a 1/2 in NPT port; if your line needs more flow capacity, step up to 400 or 600, and step down to 200 for compact circuits. Next choose the drain: this version has an automatic drain, while manual and differential-pressure drains are available where condensate loads differ. Filter grade matters too - the standard element is 40 um and this unit carries the finer 5 um (W) element for more sensitive downstream equipment. Gauge options include the embedded square gauge or this external round gauge, with MPa, psi or bar scales, and threads can be ordered in PT (standard), G (BSPP) or NPT. A mounting bracket is included with this code. Because flow is published as curves rather than 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 GFR300 series as curves rather than a single rated figure, so we do not quote a rated flow number. Send us your application details and we will confirm the flow and sizing figures from the datasheet on request.
The A in the code sets the automatic drain, which ejects collected condensate on its own instead of waiting for a manual or differential-pressure drain cycle, and the W sets the finer 5 um element instead of the 40 um standard. Both are orderable choices on the GFR300, so you can specify a different drain or grade if your condensate load or filtration needs change.
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.