The AirTAC GFR400-15 AirTAC Filter Regulator PT1/2, psi Gauge 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 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 GFR400-15 is a filter regulator: it removes water and particulate from compressed air and sets downstream pressure in a single 400-size body with a 1/2 in PT port. This configuration carries the standard 40 um filter element with a differential-pressure drain that bleeds collected condensate automatically whenever the pressure drop across the element rises, a standard regulator adjustable from 0.15 to 0.9 MPa (20-130 psi), an embedded square gauge reading in psi, and a reverse/check valve that holds the set pressure if upstream supply is interrupted. No mounting bracket is fitted, so plan for direct piping or your own support. The polycarbonate bowl suits the non-freezing -5 to 70 C working range, and maximum inlet pressure is 1.0 MPa (145 psi).
This is a genuine AirTAC part within the GFR series, which spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, optional 5 um filtration (code W), automatic or manual drains, G or NPT thread variants, and gauge scale choices. Flow is published as curves rather than a single rated figure, so we confirm the datasheet and sizing figures for your application on request.
| Model | GFR400-15 AirTAC Filter Regulator PT1/2, psi Gauge |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (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 — square, 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). |
| F | Gauge shape: Square. C is round, F is square. |
| 2 | Gauge scale: psi. 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. |
| 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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Point-of-use conditioning ahead of a pneumatic press: the 40 um element strips water and scale from the header air while the regulator holds a steady working pressure for consistent forming and clinching strokes.
Feeding clean, regulated air to carton sealers and wrapping heads on a packaging line, where the check valve keeps cylinder positions stable through brief supply dips and the square psi gauge lets operators verify setpoint at a glance.
Conditioning the air feeding pick-and-place actuators and air tools in an assembly cell, with the 1/2 in PT port matching the cell's main drop and the differential-pressure drain keeping the bowl clear without daily manual attention.
Step up or down through the GFR sizes (200/300/400/600) to match the port and flow band your line needs; the 400 size with its 1/2 in PT port sits in the upper-middle of the range. Choose the drain for the duty: differential-pressure (this unit) drains only when the element loads up, automatic drains continuously, and manual suits supervised installations. If finer filtration is needed, the 5 um element (code W) is the alternative to the standard 40 um. Gauge scale (MPa, psi or bar), thread (PT standard, G or NPT to order) and bracket are all decodable choices.
Because AirTAC publishes flow as curves and not a single rating, ask us to confirm sizing against your actual air demand before ordering - we will send the datasheet figure on request.
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 number, so we do not quote a figure here. Tell us your working pressure and air demand and we will confirm the sizing from the datasheet on request.
This unit's differential-pressure drain releases collected condensate automatically when the pressure drop across the 40 um element rises - no daily manual draining. If your duty needs continuous bleeding or supervised draining, the GFR series is also available with automatic (code A) or manual (code M) drains.
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.