The AirTAC GFR40015ALJF1T 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 AirTAC GFR40015ALJF1T is a size 400 GFR filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air through a 40 um standard element while a low-pressure type regulator holds the downstream setting, and an automatic drain expels collected condensate from the polycarbonate bowl without manual attention. This configuration has 1/2 in NPT ports, a square gauge fitted with an MPa scale, no mounting bracket and no reverse/check valve. 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 from the G-series filter regulator line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, drain, filter-grade, gauge, thread and bracket options to match. Flow figures for this series are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR40015ALJF1T AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR400 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, MPa 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.
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 15 | Port size PT1/2". This body offers 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. |
| 1 | Gauge scale: MPa. 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. |
| (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 | GFR400 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeds spray guns on a finishing line with filtered, moisture-reduced air held at a gentle regulated setting, with the automatic drain keeping condensate off the finish during continuous shifts.
Supplies sealing jaws and low-force clamp cylinders on a packaging line where delicate pressure control matters, filtering water and particles that would otherwise mark film or stick valves.
Regulates filtered air to workholding clamps on a machining cell, holding a low clamping force so soft parts are gripped without distortion while the 40 um element protects the clamp valves.
Start with the port step: this unit is size 400 with 1/2 in NPT ports; smaller and larger sizes (200/300/600) are available if your line needs a different connection or flow capacity. Drain choice matters in service: automatic drain (this unit) suits unattended duty, manual drain suits supervised points, and differential-pressure drain is the catalogue default. Filter grade is 40 um standard; specify the W option for 5 um where finer particulate capture is needed. The embedded square gauge with MPa scale is fitted here; an external round gauge with psi or bar scale is an option. Thread is NPT on this code - PT is the standard and G (BSPP) is also an order option - and brackets are optional (this code is supplied without one). Flow for this series is published as curves, not a single rated figure, 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 this series as curves, not as a single rated figure, so there is no one rated flow number we can quote. Tell us your line pressure, downstream setting and expected air demand, and we will confirm the sizing from the datasheet on request before you order.
The A in the code sets the automatic drain: the polycarbonate bowl expels collected condensate on its own, so the unit suits points that run unattended. Manual (M) and differential-pressure (blank) drains are the other catalogue choices if your maintenance routine differs.
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.