The AirTAC GFR40010MLC2WT AirTAC Filter Regulator NPT3/8, 5 um is a genuine G-series filter regulator: water separation, 5 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 GFR400-10 is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This 400-size unit is built around a 3/8 in NPT port with NPT thread, and the W code in the model means the 5 um element is fitted instead of the 40 um standard element, so it captures finer particles ahead of sensitive downstream components. The M code gives a manual drain, so condensate is released by operating the drain rather than automatically, and the L code marks the low-pressure regulator type. A round gauge showing psi is fitted so the set pressure can be read directly.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of drain type, 40 um or 5 um filtration, gauge style and scale, and PT, G or NPT thread. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR40010MLC2WT AirTAC Filter Regulator NPT3/8, 5 um |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (NPT thread) |
| Filtering grade | 5 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 | 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". |
| 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. |
| W | Filtering grade 5 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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Feeding a bench pneumatic press or clamping fixture where air must be filtered to 5 um and held at a low regulated pressure, with the fitted psi gauge giving the operator a direct pressure readout.
Supplying filtered, regulated air to packaging machine valve islands and actuators, where the manual drain suits a line that is bled down at shift end and the 5 um element protects control components.
Conditioning shop-air feeds to lab or test-bench instruments that need fine 5 um filtration and a gentle, low setpoint regulated supply, read on the round psi gauge.
Size and port step up from 200 through 600, so pick the 400 / 3/8 in frame once the flow your line needs is known - we will confirm the flow curve against your demand before you order. This unit is the low-pressure (L) type; its exact regulation range is not published, so confirm the range with us if your setpoint is outside a standard regulator's span. The 5 um element suits finer protection; the 40 um standard element is available on other variants. The manual drain needs someone to bleed condensate periodically - choose an automatic or differential-pressure drain variant if that does not suit the installation. Thread here is NPT; PT is the standard and G (BSPP) is also an order option. A round psi gauge is fitted, a bracket is included, and no reverse/check valve is fitted on this code.
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 as curves, not as a single rated number, so we do not quote a figure here. Ask us and we will confirm the datasheet and check the flow curve against your application before you order.
The M code means condensate collected in the PC bowl is released by operating the drain by hand, so plan a routine bleed; automatic and differential-pressure drain variants exist if that does not suit your site. The L code marks the low-pressure regulator type; its exact adjustment range is not published, so confirm the range with us against 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.