The AirTAC GFR400C10AJF2K AirTAC Filter Regulator PT3/8, 40 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 AirTAC GFR400C10AJF2K is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at your setpoint in one body. This size 400 unit is threaded PT3/8, carries the standard 40 um filter element, and has an automatic drain that ejects collected condensate without anyone opening the bowl. A built-in check valve (code K) holds downstream air if the upstream supply drops. Outlet pressure is set over a 0.15-0.9 MPa (20-130 psi) adjustment range and read on the fitted square gauge, scaled in psi.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in. up to 1 in., and options including 5 um filtration (code W), manual or differential-pressure drains, MPa/psi/bar gauge scales, G (BSPP) or NPT threads, and bracket choice. Flow is published as curves rather than a single rating, so ask us to confirm sizing figures from the datasheet for your application.
| Model | GFR400C10AJF2K AirTAC Filter Regulator PT3/8, 40 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) |
Clean, regulated air to the clamp and pallet-change cylinders on a machining center, with the check valve holding clamping pressure if the shop supply dips mid-cycle.
Conditioning and regulating the air feeding diverter and pusher cylinders on a parcel sortation conveyor, where unattended automatic draining keeps moisture out of the valve bank.
Filtering and regulating the compressed air feeding pneumatic loom actuation in a weaving plant, protecting sensitive air components from water and scale in the ring main.
Size 400 with a PT3/8 port is the step for circuits whose air demand outgrows 1/4 in. units; move to size 600 when the run calls for 3/4 in. or 1 in. ports. Pick the drain to match attendance: automatic (this unit) suits points nobody checks daily, manual suits attended stations, and differential-pressure drains the bowl only as the element loads up. The 40 um element is the standard grade; specify code W for 5 um where finer particulate matters. The gauge here reads psi; MPa and bar scales are available, and an external round gauge can be ordered instead of the embedded square one. PT is the standard thread; G (BSPP) and NPT are order options, and the J code means no mounting bracket is supplied. 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.
Flow for the GFR400 is published as curves in the AirTAC datasheet rather than a single rated figure, so we do not quote a number here. Tell us your line pressure and air demand and we will confirm the correct size from the datasheet on request.
The K code means a reverse/check valve is fitted: if upstream supply fails, air downstream of the regulator is held rather than venting back through the unit. The automatic drain (code A) ejects condensate from the bowl without manual attention, so the filtration side keeps working unattended while the check valve protects the downstream circuit from supply loss.
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.