The AirTAC GFR400-15 AirTAC Filter Regulator NPT1/2, 5 um, Round 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 GFR400-15 is a filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This size-400 unit is fitted with a 1/2 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, and an external round gauge reading in psi. A reverse/check valve is fitted, and the unit is ordered without a mounting bracket.
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200/300/400/600) covering the catalogue's port range with options for drain type, filter grade, gauge style and scale, thread form and bracket. Flow figures for the series are published as curves rather than a single rating, so we confirm the datasheet numbers for your application on request.
| Model | GFR400-15 AirTAC Filter Regulator NPT1/2, 5 um, Round Gauge |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT 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. |
| T | NPT 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 filtered, regulated air to a bench or C-frame pneumatic press, where the 5 um element protects the valve stack and the psi gauge lets operators set and verify working pressure at the press.
Serving as the conditioning point for a packaging line's actuator grid, with the differential-pressure drain handling condensate automatically across shift-long cycling and the check valve holding set pressure if upstream supply dips.
Conditioning the supply to conveyor divertors and stopper cylinders, where clean, regulated air keeps directional valves shifting reliably and the 1/2 in port supports the line's larger actuator bank.
Start with the port and size step: GFR400 sits at the larger end of the range with a 1/2 in port, so match it against the air demand of the circuit - and because flow is published as curves rather than a single rated figure, ask us to confirm sizing against your application before ordering. This unit carries the 5 um element (code W) instead of the 40 um standard, which suits downstream equipment that tolerates less particulate; the differential-pressure drain is the default choice and needs no manual attention under normal flow. The round gauge here reads in psi; square embedded gauges and MPa/bar scales are the other catalogue options. Thread is NPT on this unit, with G(BSPP) and PT available to order, and the J code means no mounting bracket - add one if the unit will be wall or panel mounted.
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 GFR400 series as curves, not as a single rated number, so we do not quote a figure here. Tell us your application and we will confirm the relevant flow and datasheet figures for you on request before you order.
The C2 code on GFR40015JC2WTK specifies an external round gauge with a psi scale. The embedded square gauge is the standard fitting, and MPa or bar scales are also catalogue options - so pick the gauge style and scale that matches how your technicians read pressure, and we can decode the alternative configuration for you.
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.