The AirTAC AirTAC GFR400C15ALF2W Filter Regulator PT1/2, 5 um 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 See datasheet 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 GFR400C15ALF2W is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body, sized 400 with a 1/2 in PT port. This configuration carries the 5 um filter element (code W) for finer particle removal than the standard 40 um grade, an automatic drain that ejects collected condensate without manual attention, and the low-pressure regulator type for applications set well below standard line pressures. It is fitted with an embedded square gauge scaled in psi, a metal bowl, and a mounting bracket; no reverse/check valve is fitted. 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. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filter grades, standard or low-pressure regulator types, gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | AirTAC GFR400C15ALF2W Filter Regulator PT1/2, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Ahead of spray guns on a paint or coating line, where the low-pressure regulator type holds a gentle set pressure for atomizing air and the 5 um element keeps fine particles out of the finish while the automatic drain clears condensate between shifts.
Supplying clamping fixtures on a CNC machining centre, where workpieces need a low, stable clamp pressure rather than full line pressure; the psi-scaled square gauge lets operators set and verify the clamp figure directly.
Conditioning air for grip, pusher and divertor actuators on a bottling or packaging conveyor, combining water and particle removal with low-pressure regulation in one body and freeing maintenance staff from manual drain routines.
Start with the size and port: the 400 frame with its 1/2 in PT port sits in the upper-middle of the GFR range (200/300/400/600), so step up to 600 or down to 300 depending on the flow your line needs - we can check the published flow curves against your demand on request. This unit is already specified with the finer 5 um element (the standard grade is 40 um), an automatic drain (the alternatives are manual or differential-pressure), and the low-pressure regulator type; note that the exact adjustment range for the low-pressure type is not published in our material, so confirm it with us if your set point is critical. The square gauge reads in psi; MPa and bar scales are available as options. Thread is PT as standard, with G (BSPP) and NPT orderable as catalogue options, and the mounting bracket is included. If you also need lubrication downstream, that calls for a GFC two-unit or GC three-unit set rather than this single filter regulator.
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 figure, so we do not quote a number here. Send us your application details and we will confirm the relevant flow and datasheet figures for this 400-size, 1/2 in PT unit on request.
The L code in GFR400C15ALF2W marks the low-pressure regulator type, intended for set points well below standard line pressures. The exact adjustment range for the low-pressure type is not published in the material we hold, so please confirm the range with us if your set point is critical. Standard-type GFR units are available if you need the conventional adjustment span.
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.