The AirTAC GFR300C15AJF1WTK AirTAC Filter Regulator NPT 1/2 in 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 GFR300C15AJF1WTK is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 300 unit is configured with a 1/2 in NPT port, a 5 um filter element (the finer of the two catalogue grades), an automatic drain that expels collected condensate without manual attention, an embedded square gauge scaled in MPa, and a reverse/check valve that holds downstream pressure when the supply is lost. It ships without a mounting bracket, so plan for in-line piping support. Maximum 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. The GFR filter-regulator family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, in PT (standard), G and NPT threads, with 40 um or 5 um filtration, differential-pressure, automatic or manual drains, and a choice of gauge scale. 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 | GFR300C15AJF1WTK AirTAC Filter Regulator NPT 1/2 in |
|---|---|
| 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) |
Conditioning and pressure regulation for the clean, dry air feeding CNC machine tool clamps, tool-changer actuators and pneumatic gates, where the 5 um element protects fine control valves from particles and water.
Filtered, regulated air for conveyor stop-gates, pushers and diverting cylinders on a bottling or carton-packing line, with the automatic drain keeping condensate out of the circuit during continuous shifts.
Supplying regulated air to clamp and fixture cylinders on an automotive trim-assembly line, where the reverse/check valve holds the set pressure on the fixture side if the plant air supply drops.
Size 300 with a 1/2 in NPT port sits in the middle of the GFR range; step up to 400 or 600, or down to 200, as your line's air demand dictates - we will confirm the flow curve against your consumption rather than quote a single rating. This unit carries the 5 um element (code W) instead of the 40 um standard, the right choice where downstream valves and instruments are sensitive to finer particles; note the automatic drain suits unattended duty, while a manual or differential-pressure drain is the alternative when you prefer operator-controlled or demand-based purging. The square gauge reads in MPa; psi and bar scales and an external round gauge are order options, and G or NPT thread variants can be ordered where PT is not wanted. A bracket is an option on this family, but this code omits it.
Before ordering, send us your application details: because AirTAC publishes flow as curves, not a single rated number, we confirm the datasheet figures and check the sizing against your required flow and pressure.
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, not as a single rated figure, so we do not quote a number here. Tell us your operating pressure and required flow and we will confirm the datasheet curve and check the sizing for your application before you order.
The code W in GFR300C15AJF1WTK selects the 5 um filter element instead of the 40 um standard, giving finer particulate removal for sensitive downstream equipment. The A selects an automatic drain, which expels collected condensate on its own instead of the default differential-pressure drain. Both are catalogue options on the GFR family, and the 40 um grade or other drain types can be ordered if your application prefers them.
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.