The AirTAC GFR40010MLC3TK AirTAC Filter Regulator NPT3/8 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 GFR400 series combines water and particulate filtration with pressure regulation in a single body, so one unit both cleans the compressed air and sets the downstream pressure. This configuration is the 400 size with 3/8 in NPT ports, a 40 um standard filter element, a manual drain on the polycarbonate bowl, and the low-pressure regulator type. It is fitted with an external round gauge scaled in bar, a reverse (check) valve, and a mounting bracket.
This is a genuine AirTAC part. The GFR family is offered across the 200, 300, 400 and 600 sizes with PT, G or NPT threads, a choice of drain type, an optional 5 um element (code W), and gauge or no-gauge variants. Flow is published as curves rather than a single rating, so ask us to confirm the figures for your application before ordering.
| Model | GFR40010MLC3TK AirTAC Filter Regulator NPT3/8 |
|---|---|
| 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, bar 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. |
| 3 | Gauge scale: bar. 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 filtered, regulated air to a low-pressure heat-seal or clamp circuit on a packaging line, with the manual drain emptied during scheduled changeovers and the check valve blocking backflow toward the unit.
Supplies cleaned air at a controlled low pressure to the clamping cylinders of a workholding press, where the operator reads the setpoint on the round bar-scale gauge and drains the bowl at the start of each shift.
Prepares air for the gate and diverter cylinders along a conveyor line, removing water and particulate before regulation so the low-pressure circuit sees clean, stable supply with the bracket mounting the unit at the machine frame.
Start with the port size: the 400 size steps up from the 300 with a larger 3/8 in port, so size the unit against the flow your line needs - we can check the published flow curves against your demand on request. Choose the drain type: this model is manual drain, meaning an operator opens the drain periodically; automatic and differential-pressure drains are available if you prefer unattended moisture removal. The 40 um element is standard; specify code W for the 5 um grade if finer filtration is needed. This unit carries the low-pressure regulator type - its exact adjustment range is not published in the catalogue, so confirm it with us for your setpoint. Gauge scale options are MPa, psi or bar; this one is bar. Thread is NPT here, with PT (standard) and G also orderable, and the bracket is included.
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 GFR400 flow as curves rather than a single rated figure, so we do not quote a number here. Send us your line pressure, setpoint and air demand and we will confirm the flow from the datasheet curves before you order.
Manual drain (code M) means an operator opens the drain on the polycarbonate bowl to release collected moisture, which suits lines with regular maintenance rounds. If you need unattended moisture removal, the same GFR400 size is available with an automatic drain (code A) or the differential-pressure drain that is the default. This unit is also the low-pressure regulator type, so confirm its adjustment range with us for your setpoint.
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.