The AirTAC GFR40015LF2W AirTAC Filter Regulator PT1/2, 5 um, psi 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 GFR40015LF2W is an AirTAC GFR400 low-pressure filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This configuration has PT1/2 ports, a 5 um filter element (code W, versus the 40 um standard), a differential-pressure drain that bleeds accumulated condensate whenever the pressure differential across the element is high enough, an embedded square gauge scaled in psi, and a mounting bracket included. As a low-pressure type (code L) it is intended for circuits that run below standard regulator settings; its exact adjustment range is not published, so confirm it against your setpoint before ordering.
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, in PT (standard), G and NPT threads, with 40 um or 5 um elements, differential-pressure, automatic or manual drains, and square or optional round gauges scaled in MPa, psi or bar. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application.
| Model | GFR40015LF2W AirTAC Filter Regulator PT1/2, 5 um, psi gauge |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (PT 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. |
| (blank) | Mounting bracket included. |
| (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. |
| (blank) | PT 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 CNC fixture circuit that clamps workpieces at reduced air pressure gets both clean air and a controlled setpoint from one body: the 5 um element keeps spindles of the clamp valve free of particulate and water, while the low-pressure regulator holds the gentle holding force the part needs.
On a cartoning or wrapping line, short-stroke pneumatic actuators run best from a steady, low setpoint. This filter regulator conditions the shop-air feed at the machine drop, the psi gauge gives operators a readable setpoint, and the differential-pressure drain keeps condensate moving out during continuous shifts.
A blow-off header on a filling or conveying line running at reduced pressure benefits from filtered, regulated air: the 5 um grade prevents nozzle blockage from pipe scale and the regulator lets the line be tuned down to the lowest pressure that still does the job.
Start with the port step: the GFR400 carries PT1/2, so match it to your line size and let the published flow curves - not a single rated number - drive the size choice between 200, 300, 400 and 600. This unit is the low-pressure type (L), so check that your working setpoint falls in the low-pressure band; the exact range is not published and we will confirm it on request. The W code gives you the finer 5 um element against the 40 um standard - choose 5 um where downstream valves or instruments need cleaner air. The differential-pressure drain is automatic in operation and suits lines with steady demand; if the unit sees intermittent flow, ask about the automatic (A) or manual (M) drain variants. The square gauge is scaled in psi here; MPa and bar scales exist, as does an external round gauge. PT thread is the standard; G and NPT are order options. Bracket is included. Before ordering, send us your flow and pressure conditions and we will confirm sizing against the datasheet curves.
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 family as curves, not as a single rated figure, so we do not quote a number. Send us your line pressure, setpoint and expected air demand and we will confirm the flow from the datasheet curve for the GFR400 size before you order.
W is the filter grade: a 5 um element instead of the 40 um standard, chosen where downstream valves or instruments need finer filtration. L marks the low-pressure regulator type, intended for circuits running below standard settings; its exact adjustment range is not published, so we will confirm it against your setpoint on request.
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.