The AirTAC GFR40015MLJC2K AirTAC Filter Regulator PT1/2 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 PT1/2" 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 GFR40015MLJC2K is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single compact body. This size 400 unit is built around a PT1/2 port, carries a 40 um standard filter element, and uses a manual drain, so condensate is released only when an operator opens the drain - a good fit where discharge timing should be under human control. It is the low-pressure type, and a reverse/check valve is fitted. The round external gauge is supplied on a psi scale, and the unit ships without a mounting bracket.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of manual, automatic or differential-pressure drains, an optional 5 um element (code W), gauge scale options, and PT, G or NPT threads. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Rated flow is published as curves rather than a single figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR40015MLJC2K AirTAC Filter Regulator PT1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (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 — 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. |
|---|---|
| 15 | Port size PT1/2". 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). |
| 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. |
| (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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Point-of-use conditioning on a packaging machine's air drop: the 40 um element strips water and debris before the actuators, while the low-pressure regulator holds a gentle, stable supply for delicate sealing and forming cylinders.
Feeding sorting gates and diverters on a conveyor line, where the reverse/check valve helps hold the set pressure against back-feed and the manual drain lets maintenance purge condensate during scheduled stops.
A bench-mounted conditioning stage for laboratory or test-rig air, where the low-pressure type suits sensitive instruments, the psi-scaled round gauge gives a familiar readout, and manual draining keeps the process deliberate and visible.
Start with the port step: this unit is size 400 with a PT1/2 port; if your line needs a smaller or larger connection, the same function is available in sizes 200, 300 and 600 with ports from 1/8 in to 1 in. Drain type is a real decision: manual (this unit) puts discharge in the operator's hands, while automatic and differential-pressure drains handle condensate without intervention. The 40 um element is standard; specify the W code for the 5 um grade where finer filtration is needed. Gauge scale is selectable (MPa, psi or bar) and the thread can be ordered as PT, G (BSPP) or NPT. A bracket is optional on this family, and this particular code omits it. Because rated flow is published as curves rather than a single number, 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 the GFR series as performance curves rather than a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your inlet pressure and required downstream flow and we will confirm the sizing from the datasheet for this exact PT1/2 unit before you order.
The M in the code sets a manual drain: condensate collects in the polycarbonate bowl and is released only when the drain is opened by hand, which suits lines with regular maintenance windows. The L code marks the low-pressure regulator type, intended for lower set-pressure duties; its exact adjustment range is not published on the sheet we work from, so we will confirm it on request. The C2 code adds a round external gauge on a psi scale, and K adds a reverse/check valve.
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.