The AirTAC AirTAC GFR400-15 Filter Regulator PT1/2, 5 um, psi Gauge is a genuine G-series filter regulator: water separation, 5 µm particulate filtration and balanced-type pressure regulation combined in a single body. It has PT1/2" 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 GFR400-15JC2WK is a filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This size 400 unit is specified for a 1/2 in PT port, with 5 um filtration (the finer of the two catalogue grades), a differential-pressure drain that bleeds accumulated condensate automatically as pressure differential builds, and a standard regulator with an adjustment range of 0.15-0.9 MPa (20-130 psi). A round external gauge on a psi scale is fitted, and a reverse (check) valve is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl lets you see the condensate level at a glance.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of 40 um or 5 um filtration, differential-pressure, automatic or manual drains, square or round gauges on MPa, psi or bar scales, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application before ordering.
| Model | AirTAC GFR400-15 Filter Regulator PT1/2, 5 um, psi Gauge |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT thread) |
| Filtering grade | 5 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 — round, psi scale |
| Reflux valve | Fitted (reverse flow permitted) |
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. |
|---|---|
| 15 | Port size PT1/2". 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. |
| J | Supplied without bracket. |
| (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. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| (blank) | PT thread. PT is the default; G is BSPP and T is NPT. |
| K | Reverse-flow (reflux) valve fitted. |
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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Point-of-use conditioning for the air feeding a CNC machine tool's tool-changer and clamping circuits: 5 um filtration protects directional valves from particulate, and the regulator holds a steady set pressure for consistent clamping force.
Conditioning the supply to pneumatic pushers, diverters and stop gates on a packaging conveyor, where the check valve holds the downstream circuit against supply dips and the psi gauge lets operators verify set pressure at a glance.
Filtration and regulation for the air feeding looms or winding heads, where the differential-pressure drain continuously removes condensed water from humid mill air and the 5 um grade keeps fine orifice components from clogging.
Start with the port and size: this unit steps up to 1/2 in PT on the size 400 body, the right territory for lines feeding multiple cylinders or larger actuators; match the port step to your pipe and required flow. Choose the drain: this configuration uses the differential-pressure drain (the default), while automatic (A) and manual (M) versions are catalogue options. Filtration here is the 5 um W grade; the 40 um standard grade suits general shop air if finer filtration is not needed. The fitted round gauge reads in psi; square embedded gauges and MPa or bar scales are alternatives. PT is the standard thread, with G (BSPP) and NPT available to order as specifications. Note this code carries no mounting bracket (J).
One honest note on sizing: flow for the GFR series is published as curves, not a single rated number, so we do not quote a rated flow figure. Send us your application details and we will confirm the datasheet and correct size before you order.
Quick checklist
The PC bowl must not be cleaned with solvents — wipe it with a dry cloth. The reflux valve permits reverse flow through the unit. A filter regulator adds no oil to the line.
AirTAC publishes flow for the GFR series as curves, not as a single rated figure, so we do not quote a rated flow, Cv or SCFM number. Tell us your application and downstream demand and we will confirm the datasheet and check the sizing for you before you order.
The W in the code GFR40015JC2WK selects the 5 um filtration grade, the finer of the two catalogue options; 40 um is the standard element for general shop air. If your line does not need fine filtration, the 40 um version of the same size 400, 1/2 in PT unit is available as a separate catalogue code.
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.