The AirTAC AirTAC GFR40015MLC2GK Filter Regulator G1/2 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 GFR40015MLC2GK is a GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit has a G1/2 (BSPP) port, a manual drain on the polycarbonate bowl, and the standard 40 um filter element. The regulator is the low-pressure type, a round gauge reading in psi is fitted, and the reverse/check valve (code K) is included; a mounting bracket comes as standard. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is offered in sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of drain (differential-pressure, automatic or manual), an optional 5 um filter element (code W), gauge and scale options, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so we confirm flow and full datasheet details on request.
| Model | AirTAC GFR40015MLC2GK Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) 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. |
| (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. |
| G | G (BSPP) 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) |
On a paint or coating line, this filter regulator cleans the supply air of water and particles that would spoil the finish, then holds a steady low regulated pressure at the spray guns so the operator's setting stays put across a shift.
On a bottling or carton-packing conveyor, the cylinders that push, clamp and divert product need clean, dry air at a stable pressure. This unit filters the line air, regulates it downstream, and its manual drain lets maintenance clear accumulated condensate at the start of each shift.
On fixture and jig circuits where delicate or surface-critical parts must be held gently, the low-pressure regulator type lets the setter bring the clamp pressure down to a careful level, while the 40 um element keeps scoring particles out of the clamp cylinders.
Size and port: this unit is size 400 with a 1/2 in G (BSPP) port. If your line's air demand sits near the top or bottom of what a 400 body serves, step to size 300 or 600 instead - the port steps are 1/8, 1/4, 3/8, 1/2, 3/4 and 1 inch across the range. Drain: this configuration is manual drain (code M), so an operator opens the drain periodically; if the installation runs unattended, the automatic (A) or differential-pressure (blank) drain versions are the better choice. Filter grade: the 40 um element is standard; specify the 5 um option (code W) where finer filtration is needed. Gauge: the fitted round gauge reads in psi; an embedded square gauge and MPa or bar scales are the alternatives. Thread: this unit is G (BSPP); PT is the standard thread and NPT is an order option. Bracket included. Flow is published as curves, not a single rating - ask us to confirm sizing 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 there is no one number we can honestly quote. Send us your line's air demand and working pressure and we will confirm the flow from the datasheet curve for this exact configuration before you order.
The M in the code means the bowl drain is opened by hand, which suits installations that are visited regularly, such as a supervised packaging line. If the unit will run unattended or in a hard-to-reach spot, choose the automatic drain (code A) or the differential-pressure drain (blank) version of the same GFR400 unit instead.
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.