The AirTAC GFR40010MLJF2K AirTAC Filter Regulator PT3/8 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 GFR40010MLJF2K is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This 400-size unit is fitted with PT3/8 ports (PT thread standard; G and NPT are order options), a manual drain bowl in PC (polycarbonate), a 40 um standard filter element, a low-pressure regulator type, an embedded square gauge scaled in psi, and a reverse/check valve. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. It ships without a mounting bracket (code J).
This is a genuine AirTAC part. The GFR line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options including 5 um filtration (code W), automatic or differential-pressure drains, gauge scale in MPa/psi/bar, and thread variants. Because flow for this series is published as curves rather than a single rated figure, we confirm the datasheet and flow figures for your application on request.
| Model | GFR40010MLJF2K AirTAC Filter Regulator PT3/8 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT 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 — square, 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. |
| J | Supplied without bracket. |
| (blank) | Pressure gauge fitted (blank). |
| F | Gauge shape: Square. 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. |
| (blank) | PT 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 clamp cylinders on a CNC fixture line, with the psi gauge letting the setter read set pressure directly and the check valve holding the circuit if upstream supply dips.
Conditions the air feeding diverters, pushers and blow-offs along a packaging conveyor, with the manual drain bowl emptied during shift checks and the 40 um element protecting downstream valves.
Serves as a dedicated conditioning point for a low-pressure actuation circuit in a plant air system, where the low-pressure regulator type and PT3/8 connections match a branch line off the main header.
Start with size and port: the 400 size with PT3/8 ports suits lines plumbed at 3/8 in; step up or down (200/300/400/600) to match the pipe and the air demand of the circuit. Choose the drain to match attendance: this unit has a manual drain, so someone must bleed the bowl periodically - pick an automatic or differential-pressure drain variant for unattended duty. The 40 um element is the standard grade; specify code W for 5 um where finer particulate removal matters. The embedded square gauge here reads in psi; MPa and bar scales are available, and an external round gauge is optional. Thread is PT as standard; order G (BSPP) or NPT to suit your fittings. Brackets are optional on this configuration (code J = no bracket).
One honest routing note: AirTAC publishes flow for this series as curves, not a single rated number, and the exact regulation range of the low-pressure type is not stated on the sheet we work from. Ask us to confirm sizing and the low-pressure range against your application before ordering.
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 rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and we will confirm the flow figures from the datasheet on request before you order.
The M in the code means the PC bowl is drained by hand, which suits attended installations with routine checks. If the unit will run unattended, order the same GFR400 size with an automatic (A) or differential-pressure drain instead - both are catalogue options on this family.
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.