The AirTAC GFR400C15LF2WG 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 GFR400C15LF2WG is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in one body. This size 400 unit carries a 1/2 in (G1/2) BSPP port, the W-coded 5 um filter element for finer water and particulate removal than the standard 40 um grade, and a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element rises. It is the low-pressure (L) type, so it is intended for circuits regulated well below standard line pressure; the exact adjustment range for the low-pressure type is not published in the catalogue and we confirm it on request. The F2 code means the embedded square gauge is fitted and scaled in psi, and a bracket is included for panel or wall mounting.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and is available with 40 um or 5 um filtration, differential-pressure, automatic or manual drains, standard or low-pressure regulation, square (MPa, psi or bar scale) or external round gauges, an optional reverse/check valve, and PT, G or NPT threads. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR400C15LF2WG 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) |
A low-pressure clamp circuit on a CNC fixture needs clean, regulated air holding workpieces without over-clamping. The 5 um element keeps scale and pipe debris out of the clamp cylinders while the regulator holds the set pressure and the psi gauge gives the operator a direct read.
Paint and coating guns run at modest, stable pressures and are sensitive to water and particulate in the supply. A filter regulator at the booth drop filters to 5 um, regulates down to the gun's working pressure, and the differential-pressure drain clears condensate from compressed-air moisture.
Sorting, filling and sealing stations on a packaging line take their control-air feed through one compact unit. Mounted on the included bracket inside the panel, the GFR400 filters, regulates to the low setpoint the actuators need, and shows the pressure locally on the square psi gauge.
Step through the real choices before ordering. Size and port: 200, 300, 400 and 600 step up in port and flow capacity, so match the size to the air demand of the circuit - this unit is size 400 with a 1/2 in G-thread port. Drain: differential-pressure (this configuration) bleeds condensate on a pressure-differential trigger; choose automatic for continuous unattended drainage or manual where an operator drains the bowl. Filter grade: 40 um is standard protection, 5 um (this unit, code W) suits finer downstream equipment. Gauge: the embedded square gauge is standard in MPa, psi or bar scale - this one is psi - and an external round gauge is optional. Thread: PT is the standard; G (BSPP) and NPT are order options, and this unit is G. Bracket: included here (code J omits it). Regulation type: this is the low-pressure type for circuits set well below standard line pressure; the exact adjustment range is not published, so confirm it with us. Flow is published as curves, not a single rating, 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 GFR flow as performance curves, not as a single rated figure, so there is no one l/min or SCFM number we can quote. Send us your line pressure and air demand and we will confirm the flow from the datasheet curves and check the sizing for your application before you order.
The L code makes this a low-pressure regulator rather than the standard type, intended for circuits set well below standard line pressure. The catalogue does not publish an exact adjustment range for the low-pressure type, so we confirm the range on request. Everything else decodes normally: 5 um filtration, differential-pressure drain, square psi gauge, G1/2 port, bracket included, max inlet pressure 1.0 MPa (145 psi), and -5 to 70 C operation.
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.