
The AirTAC Airtac GFR Filter Regulator GFR300C15AJC1 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 GFR300C15AJC1 is a genuine AirTAC G-series filter regulator: filtration and pressure regulation combined in one body, with a drain bowl and no lubricator. This configuration is a 300-size unit on a 1/2" PT port, with automatic drain, the standard 40 um filter element, an external round gauge with MPa scale, and no mounting bracket (code J). It removes water and particulate from compressed air, drains condensate on its own, and holds the downstream pressure you set.
As a genuine AirTAC part it carries the catalogue specification for the series: maximum inlet pressure 1.0 MPa (145 psi), regulation range 0.15-0.9 MPa (20-130 psi) with automatic or differential-pressure drain, operating temperature -5 to 70 C (non-freezing), medium compressed air only, and a polycarbonate bowl at size 300. The GFR family is available in 200, 300, 400 and 600 sizes with 40 um or 5 um elements, differential, automatic or manual drains, MPa/psi/bar gauge scales, G (BSPP) or NPT thread options, and bracket or no-bracket builds. AirTAC publishes flow as curves rather than a single rated figure, so we confirm flow and datasheet figures on request before you order.
| Model | Airtac GFR Filter Regulator GFR300C15AJC1 |
|---|---|
| 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 on a 1/2" drop from a workshop rotary-screw compressor ring main, conditioning the air feeding general-purpose pneumatic tools and cylinders.
Regulates the air to diverter and gate cylinders along a package-conveyor line, with automatic drain handling condensate from the main run.
Filters and regulates shop air ahead of spray equipment and air tools in a small paint or finishing shop on a half-inch supply line.
Size to the job: 200 suits 1/8"-1/4" lines, 300 covers 3/8"-1/2", and 400/600 step up for larger ports and higher demand - this 300 model sits on a 1/2" PT port. This unit uses the 40 um standard element for general plant air; choose 5 um (code W) if finer protection is needed. It has automatic drain and an external round MPa gauge instead of the embedded square one, and code J means no mounting bracket. G (BSPP) and NPT threads are orderable options instead of the PT standard. AirTAC publishes flow as curves, 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 G-series flow as performance curves rather than a single rated figure, so there is no one number to quote. Tell us your line pressure and downstream demand and we will confirm the datasheet flow for this 300-size, 1/2" unit on request.
Units with a regulator carry an embedded square gauge as standard, and this configuration (code C) specifies the optional external round gauge instead. Both read the set downstream pressure; scale 1 is MPa, with psi (2) and bar (3) selectable at order time.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.