The AirTAC GFR30015LJF2K AirTAC Filter Regulator 1/2 in 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 GFR30015LJF2K is a 300-size GFR filter regulator: one body that first removes water and particulate from compressed air, then regulates downstream pressure. This configuration is the low-pressure regulator type with 1/2 in PT ports, a 40 um standard filter element, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, a built-in reverse/check valve that holds downstream pressure when the supply drops, and an embedded square gauge reading in psi. No mounting bracket is included with this code. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, optional 5 um filtration (code W), automatic or manual drain variants, gauge scale choices, and G or NPT thread options to order. Because AirTAC publishes flow only as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request.
| Model | GFR30015LJF2K AirTAC Filter Regulator 1/2 in Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (PT 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 — square, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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). |
| F | Gauge shape: Square. 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. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Feeds and regulates the clamp cylinders on a CNC fixture line, where filtered air at a steady low setpoint keeps workholding force consistent part after part, and the check valve holds clamp pressure if the main supply dips.
Conditions the air feeding diverters, pushers and sealing jaws on a cartoning or wrapping line, removing water and pipe scale before it reaches the valves and keeping the actuator circuit at the set pressure the machine was tuned for.
Serves spray-equipment and booth circuits that run at reduced pressure, where the 40 um element stops moisture and particles reaching the applicator and the psi gauge lets operators verify the setpoint at the wall drop.
Size 300 with 1/2 in PT ports suits lines plumbed at 1/2 in; step up to size 400 or 600 where the circuit demands more flow capacity, or down to size 200 for compact branches. The 40 um element is the standard grade for general plant air; choose the W variant only if finer 5 um filtration is specified. This unit is the low-pressure regulator type, so confirm its adjustment range against your setpoint before ordering - the exact range for the low-pressure variant is not published in our sheet. The fitted square gauge reads in psi; MPa or bar scales and an external round gauge are available in other codes. PT is the standard thread; G (BSPP) and NPT are order options. If you need a mounting bracket, this J-coded unit omits it - pick a code without the J.
Flow for this family is published as curves, not a single rated number, so send us your application details and we will confirm sizing and the full datasheet before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow 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, m3/h or SCFM number. Send us your application details and we will confirm the datasheet and flow curves for this 300-size, 1/2 in unit on request before you order.
The L in the code marks the low-pressure regulator variant, intended for circuits set below the standard type's range. The exact adjustment range for this low-pressure variant is not published in our sheet, so confirm your setpoint with us on request. What is fixed by the code: 1.0 MPa (145 psi) maximum inlet, a psi-reading square gauge, a reverse/check valve, differential-pressure drain, 40 um filtration 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.