The AirTAC GFR400-10LF2T 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 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 GFR400-10LF2T is a filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in one GFR400 body. This configuration is built with a 3/8 in NPT port, the low-pressure regulator type, a 40 um filter element and a differential-pressure drain that discharges collected condensate automatically as the pressure difference builds. The polycarbonate bowl lets you see the liquid level, the embedded square gauge reads in psi so you can set and monitor the line at a glance, and a mounting bracket is included. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part from the G-series air-treatment line, which spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, manual or automatic drain choices, a 5 um (W) element option, gauge scale choices and G/NPT thread variants. Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application on request.
| Model | GFR400-10LF2T AirTAC Filter Regulator, NPT3/8, Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT 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 — square, 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). |
| F | Gauge shape: Square. 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. |
| T | NPT 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) |
Feeding filtered, regulated air to a small pneumatic press or clamping fixture whose cylinders run at a reduced set point below standard line pressure, with the 40 um element keeping pipe scale out of the seals and valves.
Conditioning air for conveyor diverters and packaging-machine cylinders: the element stops debris reaching directional valves while the regulator holds a steady setting through shift changes, read directly in psi on the built-in square gauge.
Supplying a test bench or pilot rig where a low set point must be held stable and monitored: the low-pressure type, psi square gauge and automatic differential-pressure drain let the bench run unattended without daily bowl draining.
The decodable choices on this family are real: step up or down in size (200/300/400/600) to match the port and flow path your line needs; choose manual, automatic or the differential-pressure drain fitted here; pick the 40 um standard element or the 5 um (W) grade for finer protection; select the gauge scale in MPa, psi or bar; and order PT or G thread instead of the NPT fitted here if your piping needs it. A mounting bracket is included. Because flow is published as curves rather than one rated figure, send us your application details and we will confirm sizing against the datasheet before you order.
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 series is published as curves, not as a single rated figure, so we do not quote a number here. Send us your application - port size, downstream demand and set point - and we will confirm the flow curve and datasheet figures for the GFR400-10LF2T on request.
The L in the code marks the low-pressure regulator variant, intended for applications where the set point sits below the standard type's normal band; the exact adjustment range for the low-pressure build is not published in the sheet we work from, so we confirm it on request. The differential-pressure drain fitted here discharges collected condensate automatically as the pressure difference builds, so there is no daily manual draining; manual (M) and automatic (A) drains are order options.
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.