The AirTAC GFR40015LJC3WT AirTAC Filter Regulator, NPT1/2, 5 um 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 GFR40015LJC3WT is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in one body. It removes water and particulate from compressed air through a 5 um element (the fine W grade, versus the standard 40 um) and regulates downstream pressure in a low-pressure type configuration. Water collected in the PC (polycarbonate) bowl is expelled automatically by the differential-pressure drain, so no manual draining routine is needed. This configuration is threaded NPT1/2 (1/2 in), carries a round external gauge reading in bar, and is supplied without a mounting bracket.
This is a genuine AirTAC part. The GFR family is published in sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, G or NPT threads as order options alongside the PT standard, manual or automatic drains, 40 um or 5 um elements, and gauge choices. Flow figures for this series are published as curves rather than a single rating; we confirm the datasheet and sizing on request.
| Model | GFR40015LJC3WT AirTAC Filter Regulator, NPT1/2, 5 um |
|---|---|
| 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 | Differential-pressure drain |
| Bowl material | PC |
| Pressure gauge | Fitted — round, bar 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". |
| (blank) | Drain: Differential-pressure 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. |
| 3 | Gauge scale: bar. 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 cartoning and wrapping lines, a single body at the machine inlet cleans the air of water and debris and holds a steady low-pressure setting for the actuators that open, close and seal the packs.
Ahead of spray guns and coating applicators, the 5 um element strips fine particulate and condensed water that would otherwise mar the finish, while the regulator holds the gun supply steady through the shift.
In plants running many small pneumatic cylinders and air jets from a 1/2 in ring main, a filter regulator at each machine drop keeps moisture and dirt out of the valves and pins the working pressure for the circuit.
Choose the size and port step against the air demand of the circuit: this unit is size 400 with a 1/2 in NPT port; smaller 200/300 sizes or the larger 600 size cover other flow bands. The 5 um element here suits applications that need finer particulate capture than the 40 um standard grade. Drain choice matters: this unit uses the differential-pressure drain (expels condensate when the pressure differential rises); automatic (A) and manual (M) drains are order options. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this one is round, bar scale. Thread is NPT here; G (BSPP) is also available to order, with PT as the catalogue standard. A mounting bracket can be added (this unit is ordered without one, code J).
One honest routing note: flow for the GFR series is published as curves, not a single rated figure, so we do not quote a flow number. Send us your application demand 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. Without the K option, air cannot flow back 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 flow number. Tell us your application's air demand and line conditions and we will confirm the flow and sizing against the datasheet on request before you order.
The L code makes this a low-pressure type regulator, intended for circuits working below standard regulator settings; the exact range for this variant is not published, so we confirm it on request. The W code selects the 5 um filter element instead of the 40 um standard grade. Both are factory build options on the GFR400-15 body, not field changes.
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.