The AirTAC GFR300C15ALJC1WT AirTAC Low-Pressure Filter Regulator 1/2in 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 GFR300C15ALJC1WT is an AirTAC GFR300 filter regulator: water and particulate filtration plus pressure regulation in a single body. This configuration is built for a low-pressure circuit, with a 1/2 in NPT port, a fine 5 um filter element, an automatic drain that expels collected condensate without manual attention, a metal bowl, a round pressure gauge reading in MPa, and no mounting bracket supplied. The reverse/check valve is not fitted.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with a choice of ports, threads (PT standard; G and NPT as order options), drain types, filter grades, gauges and brackets. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet details for your application.
| Model | GFR300C15ALJC1WT AirTAC Low-Pressure Filter Regulator 1/2in |
|---|---|
| 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) |
A low-pressure clamping circuit on a CNC fixture needs clean, regulated air at a modest setpoint. The 5 um element protects the clamp cylinders from particulate and water, the automatic drain keeps the bowl clear between cycles, and the MPa gauge lets the setter read the regulated line directly.
Quarter-turn process valves with pneumatic actuators often run their pilot circuits at low pressure. This filter regulator conditions the pilot supply in one body, the 1/2 in NPT port matches the supply line, and the automatic drain suits a valve station that is visited only on maintenance rounds.
A conveyor section with air-operated guides and stop gates needs filtered, regulated air at a gentle setting. The low-pressure type matches the circuit, the 5 um element keeps the small valves clean, and the round MPa gauge gives operators a visible line-pressure check at the drop.
Size 300 with a 1/2 in NPT port suits lines that need a larger port and higher flow path than the smaller 200 frame. Because this is the low-pressure (L) type, it is the right pick where the working circuit sits below the standard regulator range - the exact adjustment range for the low-pressure type is not published, so confirm it with us against your setpoint. The 5 um element (code W) is the finer alternative to the 40 um standard element. The automatic drain suits unattended or hard-to-reach installations; manual and differential-pressure drains are the other catalogue choices. The round MPa gauge is fitted here; square embedded gauges and psi or bar scales are options. PT is the standard thread, with G and NPT as order options - this unit is ordered in NPT. No bracket is included with this code.
Flow is published as curves, not a single rated figure, so send us your application details and we will confirm sizing from the datasheet before you order.
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 l/min or SCFM number here. Tell us your application and we will confirm the flow data from the datasheet so you can size the unit correctly before ordering.
The L in the code marks the low-pressure regulator type, intended for circuits regulated below the standard type's range. The exact adjustment range for the low-pressure type is not published in the material we hold, so confirm your setpoint with us and we will verify it against the datasheet. The standard GFR range, for reference, adjusts from 0.15-0.9 MPa with automatic or differential-pressure 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.