The AirTAC GFR400C15LF2G 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 AirTAC GFR400C15LF2G is a size 400 filter regulator: one body that removes water and particulate from compressed air and regulates downstream pressure. This configuration carries a G1/2 (BSPP) port, the standard 40 um filter element, a differential-pressure drain that clears the polycarbonate (PC) bowl when the pressure drop across the element rises, so no manual draining is needed during normal flow. It is the low-pressure regulator type and ships with an embedded square gauge reading in psi; a mounting bracket is included.
This is a genuine AirTAC part. The GFR family runs from size 200 to size 600 with ports from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drain, 40 um standard or 5 um (W) filtration, standard or low-pressure regulation, gauge scale options and PT, G or NPT threads. Flow is published as curves rather than a single rating, so ask us to confirm sizing and any datasheet figure for your application before ordering.
| Model | GFR400C15LF2G 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) |
On machining and assembly fixtures, the low-pressure regulator holds a gentle, steady clamp pressure while the 40 um element keeps water and swarf out of the clamp cylinders - protecting finished surfaces from overpressure marks.
Feeding the cylinder and valve stack on a carton-sealing or wrapping line: the filter stage strips condensate and particulate before the directional valves, and the regulated output keeps wrapper tension and sealing jaws consistent.
Supplying atomizing and conveying air on a paint or powder-coating booth: clean, moisture-reduced air protects finish quality, and low-pressure regulation lets the operator set a gentle, repeatable delivery pressure at the gun.
Step up or down the size (200/300/400/600) to match the port and the flow your line needs - this size 400 unit takes a 1/2 in port in G (BSPP), with PT and NPT available as order options. Choose the drain to suit maintenance: differential-pressure (this unit, drains itself with flow), automatic, or manual where you want scheduled draining. Filtration is 40 um standard; specify W for the 5 um element if downstream valves or instruments demand finer air. The embedded square gauge here reads in psi; MPa and bar scales and an external round gauge are alternatives. A bracket is included, and operating temperature is -5 to 70 C (non-freezing) with a maximum inlet pressure of 1.0 MPa (145 psi). This is the low-pressure regulator type; ask us to confirm its adjustment range against your setpoint.
One honest note on sizing: AirTAC publishes flow for this family as curves, not as a single rated number, so send us your flow and pressure requirements and we will confirm the right size from the datasheet 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 performance curves rather than a single rated figure, so we do not quote a l/min or SCFM number on the page. Send us your required flow and working pressure and we will confirm the sizing for this size 400, G1/2 unit directly from the datasheet.
This unit's differential-pressure drain opens the polycarbonate bowl automatically when the pressure drop across the 40 um element builds up, so collected water leaves with the flow and no one has to drain it by hand during normal operation. If your line has long idle periods with little flow, an automatic drain (code A) or a manual drain (code M) you operate on a schedule may suit better - both are orderable options in this family.
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.