The AirTAC GFR30015LJC2G AirTAC Filter Regulator G1/2 Low-Pressure 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 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 AirTAC GFR300 series combines water and particulate filtration with pressure regulation in a single body. This GFR30015LJC2G is the 300-size unit with a G1/2 (BSPP) port, the low-pressure regulator type, a 40 um standard filter element and a differential-pressure drain, the default drain option for this family. The round external gauge fitted on this code reads in psi, and the polycarbonate bowl gives a clear view of the condensate level. No mounting bracket is included with this configuration.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, drain choices of differential-pressure, automatic or manual, a 40 um standard element or a 5 um (W) option, 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 | GFR30015LJC2G AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| 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 | Low-pressure 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 — 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure 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 filtered, regulated air to the pneumatic cylinders and actuators on a carton-forming or wrapping machine, where the low-pressure type lets the circuit run at the reduced setting the machine was designed around.
Conditioning the supply to a workholding clamping station on a machining centre, keeping chips and water out of the clamp cylinders while holding a gentle, repeatable clamp pressure set on the psi gauge.
Cleaning and regulating the air feeding jets and small actuators on spinning or weaving equipment, where the differential-pressure drain and clear polycarbonate bowl let maintenance staff see condensate build-up at a glance.
Step up or down through the GFR sizes (200, 300, 400, 600) to match the port and the flow your line needs; this 300-size unit carries a G1/2 port. The L in the code selects the low-pressure regulator type, suited to circuits that run at reduced set pressures. Drain choice is a real decision: differential-pressure (this unit, the default), automatic for unattended drains, or manual where an operator checks the bowl. Filter grade is 40 um standard here, with 5 um (code W) available where finer filtration is wanted. Gauge options are the embedded square gauge or an external round gauge in MPa, psi or bar scales; this code carries a round psi gauge. Thread is G (BSPP) on this code, with PT as the standard and NPT available to order, and the J code means no mounting bracket. Flow for this family 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 GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your line pressure, set pressure and the air demand of your equipment, and we will confirm the flow from the datasheet curves for this exact unit before you order.
The L selects the low-pressure regulator type rather than the standard type, so this unit is intended for circuits that run at reduced set pressures. The exact adjustment range for the low-pressure type is not published in the data we hold, so ask us to confirm it on request. Everything else in the code decodes as: G1/2 port with G (BSPP) thread, 40 um element, differential-pressure drain, round psi gauge, and no mounting bracket.
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.