The AirTAC GFR40010MLC2TK 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The AirTAC GFR40010MLC2TK is a size-400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration has 3/8 in NPT ports, a manual drain bowl in polycarbonate, a 40 um standard filter element, and the low-pressure regulator type for circuits that run at reduced set pressures. It is fitted with an external round gauge scaled in psi and a reverse (check) valve, and a mounting bracket is included.
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 options including automatic or manual drains, a 5 um (W) filter element, gauge style and scale, and G (BSPP) or NPT threads in place of the PT standard. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR40010MLC2TK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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) |
Feeds and regulates the air to clamping fixtures on a CNC machining centre, where the low-pressure regulator type suits circuits set below full line pressure and the check valve holds the downstream circuit if supply is interrupted.
Conditions and regulates air on a carton-sealing or labelling machine's cylinder bank: the 40 um element keeps water and debris out of the valves, the psi gauge gives operators a readable setpoint, and the manual drain supports scheduled washdown-day checks.
Prepares regulated air for a laboratory automation or test-rig line that runs at reduced pressure, with the round psi gauge for precise operator setting and the bracket allowing clean panel-side mounting next to the rig.
For sizing, step through the G-series sizes (200/300/400/600) against the port and flow your line needs - this unit is the size-400 step with 3/8 in NPT ports. The manual drain here means an operator opens the bowl drain during checks; if nobody will do that routinely, consider the automatic-drain variant. The 40 um element is the standard grade; specify the W code for 5 um where finer filtration matters. This is the low-pressure regulator type, so confirm its adjustment range against your set pressure before ordering - we will confirm the exact range on request. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are also available. PT is the standard thread, with G (BSPP) and NPT as order options, and a bracket is included with this unit.
Because flow is published as curves and not a single rating, 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. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for this series as curves, not as a single rated number, so we do not quote a figure. Send us your line pressure, set pressure and the equipment you are feeding, and we will confirm the flow curve and sizing from the datasheet on request.
The M in the code is a manual drain: collected water is released by opening the bowl drain during routine checks, which suits attended installations. If the point is unattended, ask about the automatic-drain variant. The K code also fits a reverse (check) valve, which helps hold the downstream circuit if the upstream supply drops.
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.