The AirTAC GFR400C10ALF2 AirTAC 3/8 in Filter Regulator, 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 GFR400C10ALF2 is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air through a 40 um standard element, then regulates downstream pressure with its low-pressure type regulator. This configuration is a size 400 unit with a 3/8 in PT port, an automatic drain that expels collected condensate without manual attention, an embedded square gauge reading in psi, a mounting bracket included, and no reverse/check valve fitted.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with matching port sizes, a choice of differential-pressure, automatic or manual drain, a 5 um (code W) filter element option, gauge scale choices, and G (BSPP) or NPT thread options to order in place of the PT standard. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR400C10ALF2 AirTAC 3/8 in Filter Regulator, 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) |
Mounted at the drop of a bottling line's air ring main, the unit filters condensate and pipe scale out of the supply and holds a steady low-pressure setting to the cylinder-driven capping and filler actuators, with the automatic drain handling water carryover between shifts.
Feeding the air cylinders that divert cartons and raise stop gates on a distribution conveyor, the regulator keeps the operating pressure stable as lines start and stop, while the 40 um element protects valve spools from particulate and the psi gauge gives operators a visible setpoint.
On a low-pressure spray or coating station, the unit conditions the shop air ahead of the applicator: water and dirt are drained off automatically and the low-pressure type regulator holds the gentle, repeatable setting the application needs, with the bracket fixing the unit to the station frame.
Start with size and port: the GFR range steps through sizes 200, 300, 400 and 600, each with its own port size, so match the size to the air consumption of the downstream circuit and the piping on the machine. This unit is size 400 with a 3/8 in PT port. Choose the drain to suit access: automatic drain (as fitted here) suits enclosed or infrequently attended installations, manual drain suits stations that are checked daily, and differential-pressure drain is the catalogue default. Filter grade is 40 um standard; specify the W option for 5 um where finer particulate removal is needed. The embedded square gauge is standard and can be ordered in MPa, psi or bar scale; an external round gauge is optional. Thread is PT as standard, with G (BSPP) and NPT available as order options, and a mounting bracket is included.
Flow for this family is published as curves, not a single rated figure, so send us your application details and we will confirm sizing against the datasheet before you order. The exact adjustment range of the low-pressure type regulator is not published in our sheet; we will confirm it on request.
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 family as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Send us your application details - downstream consumption and line pressure - and we will confirm the sizing against the datasheet curves before you order.
The automatic drain expels collected condensate from the bowl by itself, so the unit suits enclosed or rarely attended installations where a manual or differential-pressure drain would be neglected. The low-pressure type refers to the regulator build; its exact adjustment range is not published in our sheet, and we will confirm it on request. The bowl on this size 400 unit is polycarbonate (PC).
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.