The AirTAC GFR40010LF1T 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 GFR40010LF1T is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration is the size 400 unit with a 3/8 in NPT thread, the low-pressure regulator type, a 40 um standard filter element and a differential-pressure drain that bleeds accumulated condensate automatically as the pressure differential across the element rises. A square pressure gauge scaled in MPa is fitted so the set downstream pressure is visible at a glance, and a mounting bracket is included for secure panel or frame fixing. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl keeps the condensate level visible; only the size 600 units use an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drain, a 5 um element option (code W), square or external round gauges with MPa, psi or bar scales, and PT, G or NPT threads. Because AirTAC publishes flow only as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request.
| Model | GFR40010LF1T 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, MPa 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. |
| 1 | Gauge scale: MPa. 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) |
Feeds filtered, regulated air to packaging machinery that seals and forms at modest working pressures, where the low-pressure regulator type gives finer control in the lower part of the range and the differential-pressure drain keeps condensate off the machine.
Mounted on its included bracket at the inlet of a pneumatic control panel, it filters scale and pipe debris from the plant supply, holds a steady low setpoint for the panel's valves, and shows the set pressure on the fitted MPa square gauge.
Prepares air for clamps, cylinders and grippers on an assembly cell, removing water and 40 um particulate before regulation so actuator seals and valve spools are not scored by contaminated supply air.
Start with the port step: this unit is size 400 with a 3/8 in NPT thread, one step up from 1/4 in, so size up from 300 if your line runs more air than a 1/4 in feed comfortably carries. This is the low-pressure regulator type, chosen where the working pressure you set downstream sits well below standard regulator territory; the exact adjustment range for the low-pressure type is not published, so ask us to confirm it against your setpoint before ordering. The 40 um element is the standard grade and suits general plant air; specify the 5 um W-code variant if downstream valves or instruments need finer filtration. Drain is differential-pressure as standard, with automatic (A) and manual (M) variants available in the family. The fitted square gauge reads in MPa, with psi and bar scales selectable by code, and PT is the standard thread with G and NPT as order options - this unit is the NPT version. Flow is published as curves, not a single rating, so 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.
AirTAC publishes flow for the GFR400 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow figures from the datasheet on request, so you can check the 3/8 in size 400 unit against your air demand before ordering.
The L in the code marks the low-pressure regulator type, intended for applications where the regulated downstream pressure sits in the lower part of the range rather than near standard settings. The exact adjustment range for the low-pressure type is not published in the catalogue, so ask us to confirm it against your setpoint. Everything else in the code decodes as standard: 40 um filter, differential-pressure drain, square MPa gauge, NPT 3/8 thread.
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.