The AirTAC GFR400C15MLF2WGK 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 See datasheet ports, a differential-pressure drain and regulates 0.15 - 0.9 MPa (20 - 130 psi). It does not lubricate — add a GL lubricator, or order the GFC two-unit set, if downstream equipment needs oil.
The GFR400C15MLF2WGK is an AirTAC GFR-series filter regulator: a 5 um filter element and a low-pressure regulator combined in one body, sized GFR400 with a G1/2 (BSPP) port. It removes water and particulate from the compressed air, then lets you set the working pressure for the downstream circuit. This configuration carries a manual drain (the polycarbonate bowl is drained by hand on a maintenance schedule), the finer 5 um element instead of the standard 40 um grade, an embedded square gauge reading in psi, a reverse/check valve fitted to help hold downstream pressure, and a mounting bracket included. 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 available in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options for thread (PT standard; G and NPT to order), drain type, filter grade, gauge scale, and standard or low-pressure regulator type. Flow for this unit is published as curves rather than a single rated figure, so ask us to confirm flow and datasheet details for your application.
| Model | GFR400C15MLF2WGK AirTAC Filter Regulator G1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. This body offers 10 = PT3/8", 15 = PT1/2". |
| (blank) | Drain: Differential-pressure drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 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. |
| (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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
Feeding spray guns at a paint booth: the 5 um element strips water and fine particulate that would spoil a finish, while the low-pressure regulator sets a gentle, stable gun pressure and the psi gauge gives the operator a local reading.
On a welding or assembly fixture, the regulator holds a lower clamping pressure suited to compact actuators, and the fitted check valve helps hold the set pressure if the upstream supply dips.
Point-of-use conditioning for sealing and labeling cylinders on a packaging line: one body cleans the air and sets the working pressure, with the manual drain handled during scheduled changeovers.
Choose the size step (200/300/400/600) and port to match the air demand of the circuit - the 400 body here carries a 1/2 in port. Decide the drain: manual (as fitted here), automatic, or the differential-pressure default. Pick the filter grade: 40 um standard or 5 um (code W) as fitted here for finer protection of downstream equipment. Select the gauge scale - MPa, psi or bar - with the embedded square gauge standard and an external round gauge optional; this unit has the square gauge in psi. A reverse/check valve can be ordered (code K, fitted here), and a bracket is included. Thread on this model is G (BSPP); PT is the standard thread and G/NPT are order options. The low-pressure regulator type (L) is chosen when the circuit runs at lower set pressures than the standard type covers; its exact range is not published, so confirm your set pressure with us. 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. 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 we do not quote a number here. Tell us your application and required flow, and we will confirm sizing from the datasheet on request.
This GFR400 is the low-pressure regulator version, intended for circuits set below the range of the standard type; the exact range for the L type is not published, so confirm your set pressure with us before ordering. The manual drain means the bowl is emptied by hand as part of routine maintenance - if you prefer unattended condensate removal, ask about the automatic or differential-pressure drain versions.
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.