The AirTAC GFR400-10LC2 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 PT3/8" 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 GFR400-10LC2 is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the low-pressure type, fitted with an external round gauge reading in psi, uses the standard 40 um filter element, and carries a differential-pressure drain that bleeds condensate automatically whenever the pressure drop across the element is high enough. The 3/8 inch PT port suits mid-size air lines, the polycarbonate bowl lets you see the condensate level, and a mounting bracket is included.
This is a genuine AirTAC part from the GFR400 series, which spans the 200/300/400/600 sizes with port options from 1/8 to 1 inch, PT as standard and G (BSPP) or NPT threads as order options, 40 um or 5 um (W) filtration, and a choice of differential-pressure, automatic or manual drains. The low-pressure regulator's adjustment range is not published as a single figure, so ask us to confirm it against your application. Flow is published as curves rather than a rated number; we confirm datasheet figures on request.
| Model | GFR400-10LC2 AirTAC Filter Regulator, PT3/8, Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 — round, psi 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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. |
|---|---|
| 10 | Port size PT3/8". 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| C | Gauge shape: Round. C is round, F is square. |
| 2 | Gauge scale: psi. 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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
On a machine shop's pneumatic clamping line, the GFR400-10LC2 cleans moisture and swarf-laden air from the 3/8 inch supply and holds a low, steady clamping pressure, with the psi round gauge giving the operator a direct setting reference.
Feeding cylinders and diverters on a carton packaging conveyor, the filter section strips condensate carried over from the compressor while the low-pressure regulator protects sensitive low-pressure actuators downstream of the 3/8 inch PT connection.
On looms and spinning frames that run on modest regulated pressures, the differential-pressure drain keeps the polycarbonate bowl clear of accumulated water without manual blowing down, and the 40 um element shields the machine's air valves.
Size and port step up with flow demand: the 400 size with its 3/8 inch PT port sits mid-range, so size up to 600 or down to 300 if your line needs more or less air. Drain choice matters: the differential-pressure drain here needs no daily attention, while automatic (code A) or manual (code M) drains suit different duty cycles. Filter grade is 40 um standard; specify W for 5 um where finer protection is needed. Gauge and scale are decodable: this unit carries the round external gauge with a psi scale (C2); square embedded gauges and MPa or bar scales are alternatives. Thread is PT standard, with G (BSPP) and NPT as order options, and a bracket is included.
One honest note before you order: AirTAC publishes flow as curves, not a single rated figure, and the low-pressure type's adjustment range is not a published number either. Ask us to confirm sizing and the regulator range 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 GFR400 as performance curves rather than a single rated figure, so we do not quote a Cv, l/min or SCFM number. Ask us and we will confirm the flow data from the datasheet against your application before you order.
The C2 code in GFR400-10LC2 specifies the optional external round gauge with a psi scale; the embedded square gauge with MPa, psi or bar scales is the alternative. The L code makes it the low-pressure regulator type; its exact adjustment range is not published, so confirm it with us on request.
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.