The AirTAC GFR400C15MLF2W AirTAC Low-Pressure Filter Regulator PT1/2 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 AirTAC GFR400C15MLF2W is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration is decoded as a PT1/2 (1/2 in) port with PT thread, the low-pressure regulator type, a 5 um filter element (the fine grade; 40 um is the standard option), a manual drain on the bowl, a metal bowl, and a fitted embedded square gauge reading in psi. A mounting bracket is included. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port sizes stepping from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um elements, gauge scale options, G/NPT thread alternatives and bracket variants. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400C15MLF2W AirTAC Low-Pressure Filter Regulator PT1/2 |
|---|---|
| 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) |
Supplies filtered, regulated air to fixture clamps and swing cylinders that are specified for a reduced set pressure, with the 5 um element protecting the clamp valves and the square psi gauge letting the setter read the clamp pressure directly.
Feeds the cylinder and gripper circuits of a packaging line from a 1/2 in main, where the low-pressure regulator type matches machines rated below full line pressure and the manual drain is emptied during scheduled changeover and cleaning.
Prepares air at a workshop bench or spray station where tools or applicators call for a reduced, stable supply pressure; the metal bowl and included bracket suit a fixed panel build, and the psi gauge keeps the operator on the specified setting.
Use this unit when the line needs both clean, dry-ish air and low-pressure regulation at a 1/2 in port. Step up or down in the 200/300/400/600 size ladder against the flow your circuit needs - the port code (06 to 25) follows the size. Choose the 5 um element (this model, code W) where downstream valves, cylinders or instruments are grade-sensitive; choose 40 um for general protection. Drain choice matters: manual drain (this model) means an operator opens the drain periodically; automatic or differential-pressure drains suit unattended installations. The fitted square gauge reads in psi; MPa and bar scales and an external round gauge are alternatives. PT thread is standard on this code; G (BSPP) and NPT are catalogue options to order. A bracket is included.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated figure, and the exact adjustment range of the low-pressure type is not published on the sheet we work from. Tell us your line pressure, set pressure and air demand and we will confirm the datasheet figures before you order.
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 family as curves, not as a single rated figure, so we do not quote a Cv, l/min or SCFM number on the page. Ask us for the datasheet and we will confirm the curve figures against your line pressure, set pressure and air demand before you order.
The M in the code selects the manual drain: an operator opens the drain to empty collected water, which suits attended installations on a maintenance schedule; automatic and differential-pressure drains are the alternatives for unattended lines. The L-type regulator is the low-pressure version of the GFR400 - its exact adjustment range is not published on our sheet, so we confirm it from the datasheet on request. Everything else decodes as: PT1/2 port, 5 um element, metal bowl, square psi gauge, bracket included.
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.