The AirTAC GFR300-15AJC2G AirTAC Filter Regulator G1/2 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 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 GFR30015AJC2G 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 G1/2 (BSPP) port, an automatic drain that expels collected condensate without manual attention, a 40 um standard filter element, and a round pressure gauge reading in psi. The standard regulator adjusts outlet pressure across 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature range of -5 to 70 C (non-freezing). The polycarbonate bowl suits the 300 size, and the J suffix means no mounting bracket is fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port options from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, gauge styles and MPa/psi/bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR300-15AJC2G AirTAC Filter Regulator G1/2 Auto Drain |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (G (BSPP) 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, psi 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. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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) |
Feeding clean, regulated air to a bench or pneumatic press station, where the automatic drain keeps condensate off the tooling between shifts and the psi gauge lets operators set working pressure at a glance.
Conditioning the air supply for conveyor-mounted packaging machinery - diverters, sealers and clamp cylinders - with one unit providing both moisture and particulate removal and stable regulated pressure.
Installed at a 1/2 inch air drop on a factory distribution header, delivering filtered and regulated air to a work cell, with the automatic drain handling condensate without daily operator attention.
Choose the size and port step against the air your line actually consumes: size 300 with a 1/2 inch port sits mid-range in the GFR family, and the larger the size, the larger the port and the greater the flow capacity. For this model the drain is automatic, which suits unattended or hard-to-reach installations; manual and differential-pressure drains are available on other codes if you prefer operator-controlled or low-energy draining. The 40 um element is the standard grade for general plant air; specify a W-code unit if you need 5 um protection. The round gauge here reads in psi; square embedded gauges and MPa or bar scales are alternatives. Thread is G (BSPP) on this code, with PT as the catalogue standard and NPT also orderable, and the J suffix means you should add a bracket separately if you want panel or wall mounting. Because flow is published as curves and not 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 there is no one rated flow number we can honestly quote. Tell us your line's air demand and working pressure and we will confirm the datasheet curve figures for this exact model on request before you order.
The A position sets an automatic drain: the bowl expels collected condensate by itself, which suits unattended installations. The J suffix means no mounting bracket is included, so order a bracket separately if you want to secure the unit to a panel or wall.
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.