The AirTAC GFR300-15AJC1T AirTAC Filter Regulator NPT1/2 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 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 GFR300-15AJC1T is a size-300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration has a 1/2 in NPT port, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element, a round pressure gauge with MPa scale, and no mounting bracket or reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator adjustment range with automatic drain 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 general plant air; only size 600 units use an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR series is available in sizes 200, 300, 400 and 600 with a choice of port sizes, PT/G/NPT threads, differential-pressure, automatic or manual drains, 40 um or 5 um (code W) filter elements, square or round gauges with MPa, psi or bar scales, and optional brackets. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures on request.
| Model | GFR300-15AJC1T AirTAC Filter Regulator NPT1/2 |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR200 |
| One size up | GFR400 |
| Add lubrication | GFC300-15 (two-unit set) |
Clean, regulated air feeding the tool-change cylinders and pneumatic clamps on a machining centre, with the automatic drain handling condensate through long production shifts.
Filtering and regulating the air that drives case-erector and carton-sealing cylinders on a packaging line, holding a stable set pressure so carton flap folding stays consistent.
A point-of-use filter regulator at the air drop feeding assembly-cell air tools and pick-and-place cylinders, with the MPa gauge giving operators a local pressure readout.
Size 300 with a 1/2 in port sits mid-range in the GFR line: step up to 400/600 or down to 200 depending on the flow your line needs - we check the published flow curves against your application before you order. The automatic drain on this unit suits unattended duty; choose manual drain for periodic checks or differential-pressure drain as the default. The 40 um element is the standard grade; specify 5 um (code W) where finer particulate removal matters. The round MPa gauge is fitted here; embedded square gauges and psi/bar scales are alternatives. NPT is specified on this code, with PT (standard) and G also orderable. A bracket is not included on this configuration but is available as an option.
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. Tell us your application and required flow and we will confirm the sizing against the datasheet curves on request before you order.
The A in the code means the bowl drain expels collected condensate automatically, which suits unattended or hard-to-reach installations. Differential-pressure drain (blank) and manual drain (code M) are the other catalogue options, and the regulator adjustment range differs by drain type: 0.15-0.9 MPa (20-130 psi) with automatic or differential-pressure drain, 0.05-0.9 MPa (7-130 psi) with manual drain.
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.