The AirTAC GFR400-15 AirTAC Filter Regulator G1/2, 5 um, Manual Drain 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 manual drain and regulates 0.05 - 0.9 MPa (7 - 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 size-400 filter regulator that removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is built with a 1/2 inch G-thread port, 5 um filtration (the finer option versus the standard 40 um element), a manual drain on the polycarbonate bowl, an embedded square gauge reading in psi, and a built-in reverse/check valve that holds downstream pressure when the upstream supply is lost. No mounting bracket is included with this code.
This is a genuine AirTAC part from the G-series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, and MPa, psi or bar gauge scales. Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400-15 AirTAC Filter Regulator G1/2, 5 um, Manual Drain |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (G (BSPP) thread) |
| Filtering grade | 5 µm |
| Regulating range | 0.05 - 0.9 MPa (7 - 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 | Manual 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 0.05 - 0.9 MPa (7 - 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". |
| M | Drain: Manual drain — this also sets the regulating band (0.05 - 0.9 MPa (7 - 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. |
| W | Filtering grade 5 µm. Only 40 µm (blank) and 5 µm (W) exist. |
| G | G (BSPP) 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) |
Feeding a bench or floor pneumatic press where the 1/2 inch G port matches the main drop, the regulator sets a repeatable working pressure for the ram, and the check valve holds the circuit if the plant air is shut off mid-cycle.
Point-of-use preparation on packaging and cartoning lines: the 5 um element protects directional valves and cylinders from water and fine dirt, while the psi gauge gives operators a local, readable setpoint.
Supplying air cylinders and diverters on a conveyor branch line, where the manual drain suits a supervised area and the regulator keeps actuator speed consistent by holding steady downstream pressure.
Step up or down through the G-series sizes (200/300/400/600) and port sizes (1/8 to 1 inch) to match the pipe run and the flow your line needs - the 400 size with a 1/2 inch port sits in the upper-middle of the range. Choose the drain to suit the installation: manual drain (this code) needs an operator to bleed the bowl, while automatic or differential-pressure drains suit unattended positions. Pick 5 um filtration where downstream valves and instruments need cleaner air than the 40 um standard element provides. The square gauge here reads psi; MPa and bar scales are also available, and an external round gauge is optional. Thread is G (BSPP) on this code, with PT and NPT orderable; brackets are optional on this family.
Because flow is published as curves rather than a single rated figure, we cannot quote one number here - send us your application details and we will confirm sizing against the datasheet 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 number, so we do not quote one here. Send us your line pressure, downstream demand and acceptable pressure drop, and we will confirm the sizing from the datasheet before you order.
The M in this code means the polycarbonate bowl is drained by hand: an operator opens the drain to remove collected water. Choose manual where the unit is visible and checked routinely; choose an automatic or differential-pressure drain where the installation runs unattended and collected condensate must be removed without operator action.
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.