The AirTAC GFR40015LJF2WT 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 GFR40015LJF2WT is an AirTAC GFR400 filter regulator: filtration and pressure regulation combined in a single body. It removes water and particulate from compressed air through a 5 um element (the fine grade, versus the standard 40 um), then regulates downstream pressure. This configuration has 1/2 in NPT ports, the low-pressure type regulator, a differential-pressure drain that bleeds collected condensate automatically as flow passes through, an embedded square gauge reading in psi, and no mounting bracket. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C (non-freezing). The polycarbonate bowl suits the 300/400 size class; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR filter-regulator family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and is ordered with your choice of thread (PT standard, G or NPT), drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with W), gauge scale (MPa, psi or bar), bracket and reverse/check valve. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR40015LJF2WT 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 — square, 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". |
| (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). |
| 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. |
| 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) |
A fixture clamp circuit on an assembly press that must hold parts at a gentle, repeatable pressure. The low-pressure type regulator gives finer control in the lower setpoint region, while the 5 um element keeps water and fine debris out of the clamp cylinder and its control valve.
A packaging line using air jets and small actuator cylinders to open bags, seat flaps and eject rejects. The filter-regulator cleans and holds supply pressure in one body at a 1/2 in port size, and the differential-pressure drain clears condensate during continuous running without operator attention.
The pneumatic supply feeding tool-change cylinders, chuck actuation and coolant-spray valves on a CNC machining centre. The 5 um grade protects the machine's solenoid valves from particulate, the psi gauge gives the maintenance team a readable setpoint, and NPT1/2 ports match the machine's existing plumbing.
Size the unit by the port step first: GFR400 carries 1/2 in ports and sits above GFR300 (3/8 in) and below GFR600 (3/4 in and up), so pick the size whose flow curve covers your demand. This unit is the low-pressure type (code L) - choose it when the regulated setpoint sits well below the standard type's range; the exact low-pressure adjustment range is not published, so confirm it with us. The 5 um element (W) suits air tools, valves and instruments that need finer filtration than the standard 40 um. Drain is differential-pressure by default; automatic (A) or manual (M) drains are orderable if your duty cycle or access needs differ. The square gauge here reads in psi; MPa or bar scales are alternatives. Thread is NPT on this code - PT is the AirTAC standard and G (BSPP) is the other option. No bracket is fitted (J); add one if the unit will be panel- or frame-mounted rather than line-mounted. Because flow is published as curves, not a single rated figure, 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 the GFR400 as curves, not as a single rated number, so we do not quote a figure that is not in the datasheet. Tell us your working pressure, setpoint and air demand and we will confirm the flow data from the datasheet for your application before you order.
The L in the code marks the low-pressure type regulator, selected when the regulated setpoint sits in the lower part of the pressure range rather than near the standard type's range. AirTAC does not publish the exact low-pressure adjustment range for this GFR type, so we confirm it from the datasheet on request. The unit's maximum inlet pressure remains 1.0 MPa (145 psi).
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.