The AirTAC GFR40015LF2GK 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 GFR40015LF2GK is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration carries a G1/2 (BSPP) port, the low-pressure regulator type, standard 40 um filtration and a differential-pressure drain that bleeds collected condensate automatically as pressure drops across the element. A square pressure gauge scaled in psi is fitted, a reverse/check valve is built in, and the unit includes a mounting bracket. The polycarbonate bowl is rated with the body to 1.0 MPa (145 psi) maximum inlet pressure, and the unit operates from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch. Across the series you can order automatic or manual drains, a 5 um (W) filter element, alternative gauge scales, G or NPT threads, and versions without a bracket or gauge. Published flow data is presented as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | GFR40015LF2GK AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR400 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 — 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.
| 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. |
| 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. |
| 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 | GFR400 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeds filtered, regulated air to a packaging line's carton-forming and sealing cylinders, with the low-pressure type regulator holding a gentle working pressure for delicate film and glue stations.
Supplies clean, regulated air to the pop-up gates and diverters along a distribution conveyor, where the differential-pressure drain keeps condensate out of the valves without daily manual draining.
Conditions the air feeding laboratory sample-handling and analytical-instrument pneumatics, where the 40 um element protects precision valves and the check valve holds downstream pressure if supply dips.
Choose the GFR400 size by matching the 1/2 inch port and the family's flow curve to your line demand - the 400 sits above the 200/300 sizes and below the 600 for larger flows. This unit is the low-pressure regulator type, so select it where the controlled pressure sits in the lower part of the working range; the exact low-pressure adjustment range is not published, so confirm it with us against your setpoint. Drain choice matters: this unit uses the differential-pressure drain (default), while automatic (A) and manual (M) versions are orderable. Filtration is the standard 40 um element, with a 5 um (W) element available if downstream equipment needs finer air. The fitted square gauge reads in psi; MPa and bar scales and an external round gauge are options. Thread here is G (BSPP) - PT is the standard thread and G/NPT are catalogue options to order. A bracket is included; J-coded versions omit it. 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 G-series flow data as performance curves rather than a single rated number, so no one-figure rating exists for us to quote. Send us your line demand and we will confirm the flow from the datasheet curves and check the sizing for your application before you order.
K means a reverse/check valve is fitted, so air will not back-flow through the unit if supply pressure is lost. This unit also carries the default differential-pressure drain, which automatically bleeds collected condensate whenever the pressure drop across the filter element rises; automatic (A) and manual (M) drain versions are available to order.
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.