The AirTAC GFR40015LF2TK AirTAC Filter Regulator NPT1/2 Low-Pressure is a genuine G-series filter regulator: water separation, 40 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 GFR40015LF2TK is a GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point in one compact body. This size 400 unit has 1/2 in NPT ports, the standard 40 um filter element, a differential-pressure drain, and the low-pressure regulator type for circuits that run below standard line pressures. The polycarbonate bowl lets you see condensate at a glance, the embedded square gauge is scaled in psi, a reverse (check) valve is fitted to hold downstream pressure, and a mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options for thread (PT is the standard; G and NPT are order options), drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W) and gauge scale (MPa, psi or bar). Flow is published as curves rather than a single rating, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR40015LF2TK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT1/2" (NPT thread) |
| Filtering grade | 40 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 | 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. 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. |
| (blank) | Filtering grade 40 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" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
On a machining fixture line, clamping cylinders often need a gentler, tightly held supply than the main header delivers. This unit filters the incoming air, drops it to the low set point the clamps require, and the check valve helps hold that setting if upstream pressure dips.
Packaging machines run many small valves and cylinders from one drop. Feeding the machine's air through this filter regulator removes water and pipe scale that would stick valve spools, and gives the operator a psi gauge and a single set point to keep the whole machine consistent.
Pneumatic grippers on an assembly robot need clean, steady air at a moderate pressure to handle parts without crushing or dropping them. This unit mounted at the cell provides filtered, regulated supply in one body, with the bracket simplifying mounting inside the cell cabinet.
Choose the size by the port and flow step: size 400 with 1/2 in NPT ports sits mid-range in the GFR line, a step above 300 (3/8 in) and below 600 (3/4 and 1 in) - match the step to the air your circuit consumes, and we will check the published flow curve against your demand. Drain is the differential-pressure type here (the standard); automatic (A) or manual (M) versions are order options if your duty suits them. Filter grade is the standard 40 um element; specify W for the 5 um grade if downstream equipment needs finer filtration. The fitted square gauge reads in psi; MPa or bar scales, or an external round gauge, are alternatives. Thread is NPT on this unit; PT is the standard and G is available to order. This is the low-pressure regulator type - confirm its exact setting range with us before ordering. A mounting bracket is included.
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 GFR series as curves, not a single rated figure, so we do not quote a number here. Tell us your line pressure and air demand and we will confirm the flow from the datasheet for this exact 1/2 in, low-pressure configuration before you order.
With no drain letter in the code, this unit uses the differential-pressure drain: condensate collected in the bowl is expelled automatically when the pressure difference across the filter builds to a set level, with no manual attention. If your duty suits timed or hand draining instead, automatic (A) and manual (M) drain versions are available to order in the same size.
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.