The AirTAC GFR400C15ALJF2WG AirTAC Filter Regulator G1/2, 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 GFR400C15ALJF2WG is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body, sized for 1/2 in ports with G (BSPP) threads. This configuration carries a 5 um filter element, an automatic drain that expels collected condensate from the metal bowl without anyone having to open it, and a low-pressure regulator fitted with an embedded square gauge scaled in psi. No mounting bracket is included and no reverse/check valve is fitted. It is a low-pressure type, intended for circuits that run at reduced pressure; the exact adjustment range is not published in our data, so we confirm it on request. 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 ports from 1/8 to 1 in, and options that include a 40 um standard element in place of this 5 um one, manual or differential-pressure draining, MPa or bar gauge scales, an external round gauge, a reverse/check valve, a mounting bracket, and PT or NPT threads instead of G. Flow is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR400C15ALJF2WG AirTAC Filter Regulator G1/2, 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) |
Air cylinders and clamping fixtures on a machining cell need clean, moisture-free air held at a reduced, stable setting. This unit filters to 5 um and regulates in one body, with the psi gauge letting an operator read the clamp circuit setting at a glance.
Carton-forming and case-sealing machines run banks of small air cylinders that are sensitive to water carry-over and pressure drift. A filter regulator at the machine drop keeps condensate and particles out of the valves while holding the circuit at the pressure the machine was set up for.
Pneumatically actuated process valves on a bottling or filling line often need a lower supply pressure than the plant main delivers. This low-pressure type lets the line set the actuation circuit where the valve manufacturer specifies, with the 5 um element protecting the positioner and solenoid valves.
Within the GFR range you choose size and port (200/300/400/600, 1/8 to 1 in) against the flow your circuit needs; this unit is the size 400 body with G1/2 ports. Drain choice is automatic, as fitted here, or manual or differential-pressure; element grade is 40 um standard or 5 um with the W code, which is what this unit carries. Gauge options are the embedded square gauge with MPa, psi or bar scales - this one reads psi - or an external round gauge. Thread is PT as standard with G and NPT as order options, and a bracket can be added if this no-bracket configuration does not suit your mounting. Flow is published as curves, not a single rating, so send us your pressure and flow requirements and we will confirm this size against the datasheet before you order.
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 one number. Tell us your line pressure and the flow your circuit needs, and we will confirm from the datasheet whether this 1/2 in, 5 um, low-pressure unit is correctly sized - on request, before you order.
No. This configuration carries the A drain code, so condensate collected in the metal bowl is discharged automatically and no routine manual draining is needed. If you would rather control discharge yourself, the same GFR400 body is available with manual or differential-pressure draining - ask us and we will quote that variant.
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.