The AirTAC GFR40015ALJC2WT AirTAC Filter Regulator NPT1/2 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 automatic 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 series combines water and particulate filtration with pressure regulation in a single body. This configuration is built on the size 400 body with 1/2 in NPT ports, a 5 um filter element (code W) for finer filtration than the 40 um standard, and an automatic drain that discharges collected condensate without manual attention. The regulator is the low-pressure type, intended for circuits that must run at reduced supply pressure; the exact setting range is not published in the catalogue and we confirm it on request. A round psi gauge is fitted, and the unit is supplied without a mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The G-series filter regulator line spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, a choice of differential-pressure, automatic or manual drains, 40 um or 5 um filtration, embedded square or external round gauges in MPa, psi or bar scales, and PT, G or NPT threads. Flow is published as curves rather than a single rating, so we confirm sizing and any datasheet figure on request before you order.
| Model | GFR40015ALJC2WT AirTAC Filter Regulator NPT1/2 |
|---|---|
| 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 | Low-pressure 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 | Automatic drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, psi 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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". |
| A | Drain: Automatic drain — this also sets the regulating band (0.15 - 0.9 MPa (20 - 130 psi)). |
| L | Low-pressure 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. |
| (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 · PT1/2" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
On a machining cell, pneumatic clamps and swing cylinders need clean, moisture-picked-over air held at a reduced, stable pressure so parts are held consistently through the cut. The 5 um element protects the clamp seals, the automatic drain keeps moisture out of the fixture circuit without operator attention, and the fitted psi gauge lets the setter read the clamp pressure directly.
Carton sealers and bag-closing heads run short-stroke actuators that must close gently and repeatably. A low-pressure regulator type suits these circuits, the automatic drain protects the valves between shifts, and the 1/2 in NPT port steps up cleanly from a main drop into the sealing station.
Paint and coating guns demand air with fine particulate removed and pressure held low and steady at the gun. The 5 um element reduces carryover of pipe scale and rust, the low-pressure regulation suits atomising setups, and the round psi gauge gives the operator a direct reading at the booth wall.
Size and port step up together: this is size 400 with 1/2 in NPT ports, the right step when your line needs more flow than a 300 can pass, but always check demand against the flow curve before committing. Drain is a real choice on GFR units: this one is automatic (best where the unit is hard to reach or the line runs unattended); manual and differential-pressure versions are also available. Filter grade is 40 um standard or 5 um with code W - this unit carries the 5 um element, the usual pick for sensitive downstream components. Gauge: an embedded square gauge is standard and an external round gauge is optional, with MPa, psi or bar scales; this unit has the round gauge on psi. Thread: PT is the standard, with G and NPT as order options - this unit is ordered with NPT. Bracket: this code omits the mounting bracket; add it if the unit will be panel-mounted. The regulator is the low-pressure type (code L). 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 flow for this series as curves, not as a single rated figure, so there is no one number we can honestly quote. Send us your application details - line pressure, downstream consumption and duty - and we will confirm the sizing from the datasheet curves on request before you order.
This unit carries code A, the automatic drain, which discharges collected condensate on its own - the practical pick where the unit sits in an inaccessible spot or the line runs unattended. GFR units can also be ordered with a manual drain (code M) for attended maintenance, or with the differential-pressure drain, the catalogue default. The drain choice does not change the filtration or regulation function.
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.