The AirTAC GFR40015MLC2G AirTAC 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 GFR40015MLC2G is a size 400 filter regulator: water and particulate filtration plus pressure regulation combined in one body. This configuration carries a G1/2 (BSPP) port, a manual drain bowl in PC (polycarbonate), the standard 40 um filter element, and the low-pressure regulator type for circuits that run at reduced working pressure. A round gauge scaled in psi is fitted so the regulated outlet pressure can be read directly, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of port sizes, PT/G/NPT threads, manual, automatic or differential-pressure drains, 40 um or 5 um (W) filter grades, standard or low-pressure regulation, gauge style and scale, and check-valve options. Flow figures are published as curves rather than a single rating, so we confirm the datasheet and sizing on request.
| Model | GFR40015MLC2G AirTAC 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 | 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. |
|---|---|
| 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. |
| (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 · PT1/2" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
On a fixture-clamping manifold that holds workpieces at reduced pressure, this filter regulator cleans the supply and holds the set outlet pressure, with the psi gauge giving the operator a direct reading at the station.
Feeding the air cylinders on a carton-sealing or case-packing conveyor, the unit removes condensed water and pipe scale from the shop-air supply while regulating pressure to the valve manifold, and the manual drain is emptied during scheduled line checks.
At a 1/2 in drop from a factory air main serving actuators and air tools, this filter regulator conditions the branch supply in one body, with the included bracket mounting the unit at the point of use.
Size 400 with a 1/2 in port suits circuits whose air consumption sits in the upper mid-range of the G-series line; step up to size 600 or down to 300 against the published flow curves for your demand. The manual drain means an operator opens the bowl drain during checks - choose automatic or differential-pressure drain if the unit will be left unattended. The 40 um element is the standard grade; specify 5 um (code W) only where finer particulate removal is needed. The fitted round gauge reads in psi; embedded square gauges and MPa/bar scales are alternatives. Thread here is G (BSPP); PT is the standard thread and G/NPT are catalogue options to order. A bracket is included.
Flow is published as curves, not a single rated figure, so 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. 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 GFR series as curves rather than a single rated figure, so no single number can be quoted here. Tell us your operating pressure and air demand and we will confirm the flow from the datasheet and check the sizing for your application before you order.
The M in the code specifies a manual drain: condensate collected in the PC bowl is released by operating the drain when servicing. Automatic and differential-pressure drain versions of the same size 400 filter regulator are available in the GFR range if the unit will not be checked regularly.
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.