The AirTAC GFR40015ALC2WG AirTAC Filter Regulator G1/2 Low-Pressure is a genuine G-series filter regulator: water separation, 5 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 GFR40015ALC2WG is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 400-size unit is built around a G1/2 (BSPP) port, carries a 5 um filter element for finer particle capture than the standard 40 um grade, and drains condensate automatically, so the bowl does not depend on a manual or differential-pressure drain cycle. It is the low-pressure type, intended for circuits regulated well below standard line pressure, and is fitted with an external round gauge reading in psi. The polycarbonate bowl is protected by a bracket, which is included.
This is a genuine AirTAC part from the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of automatic, manual or differential-pressure drains, 40 um or 5 um filtration, gauge styles and scales, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR40015ALC2WG AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Filtering grade | 5 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 — round, psi 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. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 1 is MPa, 2 is psi, 3 is bar. |
| W | Filtering grade 5 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. |
| (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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Workholding clamps and swing cylinders on a CNC cell often run at reduced pressure to avoid distorting the part. This low-pressure filter regulator cleans the shop air and holds the reduced setting, with the psi gauge giving the operator a direct readout at the fixture.
Pick-and-place and carton-forming stations on a packaging line need clean, moisture-free air at a steady reduced pressure so cylinders stroke consistently. The 1/2 inch port feeds a manifold of actuators, and the automatic drain keeps condensate out of the valves without a daily bowl check.
Pilot-air lines to process valves and panel-mounted controls need fine filtration and a stable, lower-than-line pressure. The 5 um element protects small orifices and pilot seats, the low-pressure regulator suits the reduced setting, and the included bracket mounts the unit beside the panel.
Size the unit by the flow your line needs at the chosen port: the 400 size with a 1/2 inch port sits mid-range in the GFR family, one step above the 300 and below the 600. Choose the drain to match maintenance reality: automatic drain (this model) empties the bowl without operator action, manual drain needs a scheduled visit, and the default differential-pressure drain triggers on the pressure drop across the element. The 5 um element (code W) suits finer-particle duty; the standard grade is 40 um. The round psi gauge on this unit is the optional external style; an embedded square gauge is standard, and MPa, psi and bar scales are available. Thread is G (BSPP) here, with PT as the catalogue standard and NPT an order option; a mounting bracket is included. Because flow is published as curves, not 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, not as a single rated number, so we do not quote a l/min, m3/h or SCFM figure. Tell us your inlet pressure and the flow your line needs, and we will confirm the sizing from the datasheet on request before you order.
The L in this code marks the low-pressure regulator type, intended for circuits held well below standard line pressure; its exact adjustment range is not published, so we confirm it on request. The A marks an automatic drain: the bowl ejects collected condensate on its own, with no manual draining or reliance on a differential-pressure trigger.
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.