The AirTAC GFR400C15ALF2G 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 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 GFR400C15ALF2G is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body, so one unit removes water and particulate from the compressed air and holds the downstream pressure where the circuit needs it. This configuration is built around 1/2 inch G (BSPP) ports, an automatic drain that ejects collected condensate without anyone opening the bowl, 40 um standard filtration, and the low-pressure regulator type for circuits that run below the standard adjustment band. An embedded square gauge graduated in psi is fitted so the set pressure is visible at the unit, the mounting bracket is included, and no reverse/check valve is fitted.
This is a genuine AirTAC part from the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 inch up to 1 inch. Across the range you can order manual or differential-pressure drains as alternatives to this automatic drain, a 5 um element (code W) in place of the 40 um standard, gauge scales in MPa, psi or bar, and PT, G or NPT threads. Max working pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application on request.
| Model | GFR400C15ALF2G AirTAC Filter Regulator G1/2, Low-Pressure |
|---|---|
| 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) |
On a fixture-clamping or pneumatic-press station running at reduced pressure, this unit filters the shop air and holds the clamp pressure steady, with the psi gauge letting the setter verify the setting at the machine.
Feeding the cylinders and air jets on a cartoning or wrapping line, the combined filter-regulator keeps water and 40 um particulate out of the valves while the automatic drain handles condensate between shifts without operator attention.
At the drop feeding a robotic gripper manifold, this 1/2 inch unit conditions the air for the gripper valves and actuator circuit, and the included bracket mounts it on the cell frame next to the lockout valve.
Start with the port step: this unit is size 400 with 1/2 inch G (BSPP) ports; if your line needs more or less flow, the GFR family steps through sizes 200/300/400/600 and ports from 1/8 inch to 1 inch, so moving one size up or down is the honest way to add or shed capacity - we confirm the flow curves against your demand before you order. Drain type is a real choice: this unit has an automatic drain (code A), which suits unattended or hard-to-reach installations; manual (M) and differential-pressure (blank) versions exist if you prefer operator-controlled or load-proportional draining. The filtration grade here is the 40 um standard; specify the W variant for 5 um if downstream valves or instruments need finer air. The fitted square gauge reads in psi; MPa and bar scales are available, and an external round gauge is an option. Threads come as PT (standard), G or NPT - this code carries G. This is the low-pressure regulator type; its exact adjustment range is not published in the material we hold, so we confirm it from the datasheet on request. A mounting bracket is included.
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 GFR400 series as curves, not as a single rated number, so we do not quote a l/min or SCFM figure. Tell us your line pressure and the air demand of the circuit, and we will confirm the sizing from the datasheet curves on request before you order.
The A in this code means the bowl drains itself: collected condensate is ejected automatically without anyone opening the drain, which suits units mounted high or inside a guard. The same GFR400 body is also available with a manual drain (code M) or a differential-pressure drain (no code letter) if you prefer to control draining yourself.
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.