The AirTAC GFR400C10LF1T AirTAC Filter Regulator, NPT3/8, 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 GFR400C10LF1T is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, all in a single body. This size 400 unit is supplied with a 3/8 in NPT port, the standard 40 um filter element, a differential-pressure drain (the default drain option), an embedded square gauge scaled in MPa, a metal bowl and the mounting bracket included. It is the low-pressure (L) type, intended for circuits that run below standard line pressure.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, filter grades of 40 um standard or 5 um (code W), a choice of differential-pressure, automatic or manual drain, square or round gauges with MPa, psi or bar scales, and G (BSPP) or NPT threads alongside the PT standard. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow for this series is published as curves rather than a single rated figure, and the exact regulation range of the low-pressure type is not published, so ask us to confirm both from the datasheet against your application - on request.
| Model | GFR400C10LF1T AirTAC Filter Regulator, NPT3/8, 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) |
Set just above the low operating pressure of clamping cylinders, the regulator holds clamping force steady through the shift, while the 40 um element keeps water and grit out of the directional valve stack and cylinder seals.
Spray booths run their guns on steady, moderate air pressure. This low-pressure filter regulator sits at the booth drop to hold the atomizing set point, with the differential-pressure drain and 40 um element protecting the gun from water and particulate.
Carton sealers and case packers rely on consistent air to their cylinders for repeatable box handling. A filter regulator at each machine's 3/8 in supply keeps the pressure set point stable and the supply air free of condensate carryover and debris.
Size and port step up together: the 200, 300, 400 and 600 bodies take 1/8 in through 1 in ports, so choose the size whose flow curve covers your air demand at working pressure. AirTAC publishes flow as curves rather than one rated number, so we are glad to read the GFR400 curve with you before you commit. On this model the decodable choices are already fixed: low-pressure regulator type, 40 um standard element, differential-pressure drain, square gauge on an MPa scale, NPT thread and included bracket. If you would rather have the 5 um element (code W), an automatic or manual drain, a psi or bar gauge scale, G (BSPP) thread or the PT standard, those are order options across the range - tell us the application and we will confirm the right configuration and the low-pressure regulation range 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 GFR flow as performance curves rather than a single rated figure, so we do not quote a number here. Tell us your working pressure and air demand and we will read the size 400 curve for you and send the full datasheet on request, before you order.
L marks the low-pressure regulator type, for circuits that run below standard line pressure; the exact regulation range for this variant is not published in the catalogue, so we confirm it from the datasheet on request. The rest of the code decodes as size 400, 3/8 in NPT port, 40 um element, differential-pressure drain and a square gauge scaled in MPa.
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.