The AirTAC GFR300C15ALJC2G 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 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 GFR300C15ALJC2G is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a G1/2 port, a 40 um filter element, an automatic drain and a metal bowl. It is the low-pressure regulator type and is fitted with a round gauge scaled in psi; no mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR300 series shares the G-family option set: sizes 200 to 600, ports from 1/8 to 1 in, G (BSPP) or NPT thread in place of the PT standard, automatic, manual or differential-pressure drains, a 5 um element (code W) and square or round gauges in MPa, psi or bar scales. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application.
| Model | GFR300C15ALJC2G AirTAC Filter Regulator G1/2, Auto Drain |
|---|---|
| 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) |
Point-of-use air preparation for a stamping or forming press cell: the 40 um element keeps debris out of the valve stack while the regulator holds the circuit at its setpoint, and the automatic drain copes with condensate on a line that runs unattended.
Feeding diverters, stop gates and pushers on a packaging conveyor, where the automatic drain handles moisture build-up across multi-shift running and the round psi gauge gives operators a local readout at the machine.
Filtered, regulated air for a laboratory automation skid or test bench, where the low-pressure regulator type and a psi-scaled round gauge match the gentler setpoints and imperial readouts the bench instruments are specified around.
The decodable choices on this family are real ones. Step the size (200/300/400/600) and the port (1/8 to 1 in) against the flow your circuit needs; this unit sits at size 300 with a 1/2 in port. Drain type matters in service: automatic drains eject condensate without attention, manual drains need a periodic twist, and the differential-pressure default bleeds only when the pressure drop calls for it - this code selects automatic. Filter grade is 40 um as standard, with 5 um available as code W. Gauges: the embedded square gauge is standard and an external round gauge is optional, in MPa, psi or bar scales - this unit carries the round psi gauge. Thread: PT is the standard; G (BSPP) and NPT are catalogue options to order. A bracket is included unless code J is specified, as here. Flow is published as curves, not a single rating, so 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 as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the datasheet flow figures against your required flow before you order.
The A in this code selects the automatic drain, which ejects collected condensate without anyone having to open it. Manual-drain and differential-pressure-drain versions of the GFR300 are also catalogue options - just tell us which you need when ordering, and note that the regulator adjustment range is quoted by drain type on standard units, while this low-pressure type's range we confirm on request.
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.