The AirTAC GFR40010LC2TK AirTAC Filter Regulator, NPT 3/8 in 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 GFR40010LC2TK is a size-400 GFR filter regulator: it removes water and particulate from compressed air down to 40 um and regulates downstream pressure in the same body. This configuration is the low-pressure type, so it is intended for circuits that hold a reduced working pressure well below the 1.0 MPa (145 psi) maximum inlet. It carries a differential-pressure drain (the standard drain type), a round external gauge scaled in psi, a reverse/check valve, and a mounting bracket. The polycarbonate bowl suits non-freezing compressed-air service from -5 to 70 C, and the ports are NPT 3/8 in.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in and a choice of drain types, a 5 um filter grade (code W), gauge scales in MPa, psi or bar, and G (BSPP) or NPT threads as order options. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40010LC2TK AirTAC Filter Regulator, NPT 3/8 in |
|---|---|
| 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 — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
| T | NPT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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) |
Positioner and pilot circuits on large automated control valves in a water-treatment plant need clean, moisture-filtered air held at a modest, stable set pressure - exactly the job of a low-pressure-type filter regulator with a psi gauge at the valve assembly.
On a carton packaging line, guide rails and hold-down pads run on gently regulated air rather than full line pressure. A GFR400 filter regulator at the drop keeps the circuit filtered to 40 um and the pressure where the rail cylinders were set, with the reverse/check valve holding the setting if supply dips.
Bench-top test rigs and analytical-instrument enclosures fed from a shop-air header need particulate- and water-filtered air at a low, repeatable pressure. This unit's low-pressure regulation, round psi gauge and differential-pressure drain make it a tidy point-of-use supply for such benches.
Start with the port step: the size-400 body with 3/8 in NPT ports sits mid-range in the GFR line, so size up to 600 if your line flow demands it and down to 200/300 for lighter circuits - we will confirm the flow curve against your requirement. Because this unit is the low-pressure type (code L), it is the right choice when your set pressure is well below standard regulator range; the exact low-pressure adjustment range is not published, so confirm it with us. Choose the drain type next: this unit has the differential-pressure drain, while automatic (A) and manual (M) versions exist. The 40 um element is standard; specify the W code for 5 um if downstream equipment needs finer filtration. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are alternatives. PT is the catalogue-standard thread and G/NPT are order options, and the bracket is included on this code.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated number, so we do not quote a l/min, SCFM or Cv figure here. Tell us your line flow and working pressure and we will confirm the sizing from the datasheet curves on request before you order.
Code L marks the low-pressure regulator variant, intended for circuits held at reduced working pressures; its exact adjustment range is not published, so confirm it with us. This unit has NPT 3/8 in ports (trailing T). PT is the catalogue-standard thread and G (BSPP) or NPT are order options specified in the code.
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.