The AirTAC GFR400C10LF2K AirTAC Filter Regulator PT3/8 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 AirTAC GFR400C10LF2K is a size 400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, all in one body. This configuration is built with a PT3/8 port, the standard 40 um filter element, a differential-pressure drain, a polycarbonate bowl, an embedded square gauge scaled in psi, a reverse (check) valve, and the low-pressure regulator type for circuits that run below standard line pressure. A mounting bracket is included. Max 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 is offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, a choice of PT, G (BSPP) or NPT thread, manual, automatic or differential-pressure drains, 40 um or 5 um (W) filtration, gauge scale options, and a low-pressure type. Flow is published as curves rather than a single rating, so ask us to confirm the sizing and datasheet figures for your application on request.
| Model | GFR400C10LF2K AirTAC Filter Regulator PT3/8 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 bench or C-frame press, this unit filters the shop-air supply and holds a steady, lower regulated pressure to the clamping cylinders, while the check valve holds the set circuit if upstream supply dips.
On a packaging line running diverters, pushers and sealing cylinders, this unit cleans water and scale out of the supply and regulates the actuator circuit at the lower pressure those cylinders are built for.
Loom jet and helper circuits need clean, moisture-free air held at a modest set point; this unit strips condensate and particulate from the mill supply and regulates the jet header from one panel-mounted body.
Size and port: the 200, 300, 400 and 600 sizes step up in port size and flow capacity; this unit is size 400 with a PT3/8 port, so step up or down if your line uses a different port or needs a different flow band. Drain: this unit carries the standard differential-pressure drain; automatic (A) and manual (M) are catalogue options. Filter grade: 40 um standard here; choose W for 5 um where finer filtration is needed. Gauge: the embedded square gauge is standard, scaled here in psi; MPa or bar scales and an external round gauge are options. Thread: PT is the standard; G (BSPP) and NPT are order options. Bracket: included on this unit. Flow is published as curves, not a single rated figure, so 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.
AirTAC publishes flow for the GFR family as curves rather than a single rated figure, so we do not quote a number here. Tell us your application and required conditions and we will confirm the sizing figures from the datasheet on request.
This unit uses the standard differential-pressure drain, which discharges collected condensate as the pressure differential across the filter rises. If you prefer hands-free draining or a manual purge, automatic (A) and manual (M) drains are catalogue options on the GFR family.
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.