The AirTAC GFR30015ALJF2TK AirTAC Filter Regulator NPT1/2 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 automatic 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 GFR30015ALJF2TK is an AirTAC GFR300 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built around a 1/2 in NPT port, an automatic drain that expels collected condensate from the PC (polycarbonate) bowl without manual attention, and the standard 40 um filter element. The regulator is the low-pressure type, and a square pressure gauge scaled in psi is fitted. A reverse/check valve is included, and the unit is supplied without a mounting bracket. Maximum working (inlet) pressure is 1.0 MPa (145 psi); operating temperature is -5 to 70 C, non-freezing.
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, PT, G and NPT thread options, manual, automatic or differential-pressure drains, 40 um or 5 um (W code) elements, and gauge choices. Flow figures for the series are published as curves rather than a single rating, so ask us to confirm the sizing data from the datasheet for your application.
| Model | GFR30015ALJF2TK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR300 filter regulator |
| Port size | PT1/2" (NPT 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 | Automatic 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". |
| A | Drain: Automatic 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. |
| T | NPT 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) |
Air-actuated clamps and swing cylinders on machining centres often need a lower, tightly held supply pressure than the main shop air line. This filter regulator cleans the air and holds the reduced setting at the cell, with the psi gauge giving the operator a direct reading.
Carton sealers, labellers and wrapping heads run short-stroke air cylinders that are sensitive to dirt and pressure drift. Feeding them through this 1/2 in filter regulator keeps the line's air clean and the actuators at a stable low-pressure setting, while the automatic drain handles condensate.
Looms, printing presses and similar plant-floor machinery use low-pressure air for thread tensioners, rollers and hold-downs. A filter regulator at each machine section protects these mechanisms from water and scale and lets each section run its own reduced pressure.
Size the unit by the port and flow step: the 300 size covers 1/2 in ports, and the larger 400 and 600 sizes move more air at a given pressure drop. This unit carries the automatic drain, so condensate is expelled without daily manual draining; manual-drain versions are available if you prefer to drain by hand. The standard 40 um element suits general pneumatic supply, while the W code orders a 5 um element where downstream valves and cylinders need finer filtration. The fitted square gauge reads in psi; MPa and bar scales, and an external round gauge, are order options. The thread here is NPT; PT (the standard) and G (BSPP) are order options, and a mounting bracket can be added if panel or wall mounting is needed. Because flow is published as curves rather than 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. 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 rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and sizing data from the datasheet before you order.
The L code marks the low-pressure version of the GFR300 regulator, intended for reduced downstream settings rather than the standard range. The exact adjustment range for this variant is not published in the material we hold, so please confirm it with us on request. The rest of the code decodes as: NPT 1/2 in port, automatic drain, 40 um element, square psi gauge, reverse/check valve fitted, 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.