The AirTAC AirTAC GFR300-15AF1WT Filter Regulator NPT 1/2 in is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" ports, a automatic 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 GFR300-15AF1WT is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is ordered with NPT 1/2 in ports, an automatic drain that expels collected condensate without manual attention, a fine 5 um filter element, and the embedded square pressure gauge scaled in MPa. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range is 0.15-0.9 MPa (20-130 psi), and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the size-300 frame, and the mounting bracket is included.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um standard or 5 um (W) filter elements, MPa, psi or bar gauge scales, and PT (standard), G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | AirTAC GFR300-15AF1WT Filter Regulator NPT 1/2 in |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 5 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — square, MPa 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. |
|---|---|
| 15 | Port size PT1/2". This body offers 08 = PT1/4", 10 = PT3/8", 15 = PT1/2". |
| A | Drain: Automatic 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| T | NPT 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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Clean, regulated air at the machine inlet keeps spindle-clamp and tool-changer cylinders working to spec; the 5 um element and automatic drain protect the circuit without daily bowl checks.
A point-of-use filter regulator on a packaging conveyor feed supplies stable pressure to pick-and-place and sealing cylinders while the automatic drain handles condensate between shifts.
At a bench or cell drop in a general manufacturing plant, this unit filters the shop air to 5 um and sets the working pressure for hand-held and fixture actuators, with the MPa gauge giving a local setpoint readout.
Step up or down through the GFR sizes (200, 300, 400, 600) and their port sizes (1/8 in to 1 in) against the flow your line needs; flow is published as curves, not a single rating, so ask us to confirm sizing against the application before ordering. This unit carries the 5 um (W) element for finer filtration than the 40 um standard, and the automatic drain suits unattended duty where manual draining would be missed. The square gauge is scaled in MPa here; psi and bar scales are available, as is an optional external round gauge. The NPT thread is an order option alongside the PT standard and G (BSPP), and the bracket is included with this configuration.
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 GFR flow as curves rather than a single rated figure, so we do not quote a rated flow number. Tell us your line pressure, set pressure and air demand and we will confirm the sizing from the datasheet on request before you order.
The A in the code selects the automatic drain, which expels collected condensate without anyone opening the bowl - useful on unattended or hard-to-reach installations. The GFR family is also available with a manual drain or the differential-pressure default drain if that suits your maintenance routine better.
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.