The AirTAC GFR40015LF1T 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 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 GFR40015LF1T is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration is the size 400 unit with 1/2 in NPT ports, the standard 40 um filter element, differential-pressure drainage, and the low-pressure regulator type. A square pressure gauge scaled in MPa is fitted, and the unit includes a mounting bracket. The polycarbonate bowl lets you see accumulated condensate at a glance.
This is a genuine AirTAC part. The GFR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um (W) filtration, standard or low-pressure regulation, gauge and thread options, and an aluminium-alloy bowl on size 600. Flow is published as curves rather than a single rating, so ask us to confirm sizing or any datasheet figure for your application before ordering.
| Model | GFR40015LF1T 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 | Differential-pressure 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". |
| (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. |
| (blank) | Mounting bracket included. |
| (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) |
Feeding filtered, regulated air to a low-pressure assembly line circuit, where the low-pressure regulator type suits circuits that run at reduced settings and the 40 um element keeps rust and pipe scale out of the tools.
Conditioning the air feeding cylinders and actuators on a packaging conveyor, with the differential-pressure drain clearing condensate as it collects and the square MPa gauge giving operators a visible setpoint.
Supplying clean, regulated air to a lab test bench or pilot rig, where the 1/2 in NPT ports, visible polycarbonate bowl and fitted gauge let technicians set and monitor supply conditions directly.
Start with the port step: this unit is size 400 with 1/2 in NPT ports, which sits in the middle of the GFR range (200/300/400/600, 1/8 to 1 in). Match the size to the air demand of the circuit rather than to the pipe alone. Drainage here is differential-pressure, the default: it bleeds condensate automatically as the pressure differential across the element builds, with no operator attention. Filtration is the standard 40 um grade, which suits general plant air; choose the 5 um (W) element when downstream valves or instruments need finer protection. The regulator is the low-pressure type, intended for circuits that run at reduced settings; its exact adjustment range is not published, so confirm it with us. The fitted square gauge reads in MPa, with psi or bar scales and an external round gauge available as options. Thread is NPT on this unit; PT is the catalogue standard and G (BSPP) is also orderable. A bracket is included. 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. 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 rather than a single rated figure, so we do not quote a l/min, m3/h or SCFM number on the page. Tell us your application and air demand and we will confirm the sizing and the relevant datasheet figures on request before you order.
The L in the code marks the low-pressure regulator type, intended for circuits that run at reduced settings; the exact adjustment range for this variant is not published, so confirm it with us. Drainage is the differential-pressure type, the default: condensate is discharged automatically as the differential across the 40 um element builds, with no manual draining needed.
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.