The AirTAC GFR40015LC1TK AirTAC Filter Regulator 1/2 NPT 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 GFR40015LC1TK is a filter regulator: water and particulate removal plus downstream pressure regulation in a single body, sized at 400 with a 1/2 in NPT port. This unit is the low-pressure type, so it is intended for circuits that hold a lower regulated setting than a standard unit is aimed at; the exact set range for the low-pressure type is not published, so confirm it against your application on request. It filters to the standard 40 um grade, drains condensate by differential pressure, carries a reverse/check valve to hold downstream pressure on supply loss, includes a mounting bracket, and is fitted with an external round pressure gauge reading in MPa. The polycarbonate bowl suits the 400 frame; only the 600 size uses an aluminium alloy bowl.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and options across drain type, 5 um filtration, gauge style and scale, thread form and check valve, so a matching unit can be specified for most lines. We confirm flow and other datasheet figures on request, since flow is published as curves rather than a single rating.
| Model | GFR40015LC1TK AirTAC Filter Regulator 1/2 NPT 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 — round, MPa 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). |
| C | Gauge shape: Round. C is round, F is square. |
| 1 | Gauge scale: MPa. 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) |
Feeds clamping or hold-down cylinders that must run at a lower regulated setting than the main plant air, with the check valve holding the set pressure if the supply drops.
Supplies filtered, regulated air to sealing bars and forming actuator banks on a packaging line, where the low-pressure type matches the modest working pressure of the station.
Conditions air ahead of spray guns in a paint or coating booth, removing water and particles at 40 um and holding a low, stable regulated setting for consistent atomisation.
Step up through sizes 200, 300, 400 and 600 until the port and flow capacity match the line; this 400 unit takes a 1/2 in NPT connection. Where a bowl exists you choose the drain: differential-pressure (this unit, standard), automatic (code A) or manual (code M). Filtration is 40 um standard or 5 um with the W code if finer particle removal is needed. Units with a regulator take an embedded square gauge as standard or an external round gauge, in MPa, psi or bar scale; this unit has the round gauge in MPa. Thread is PT as the catalogue standard, with G (BSPP) and NPT as order options - this unit is NPT. Brackets are included unless the J code removes them, and K adds the reverse/check valve fitted here.
One honest note on sizing: flow for this family is published as curves, not a single rated figure, so ask us to confirm the curve against your application before ordering.
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 this family as curves rather than a single rated figure, so no rated flow number is quoted here. Send us your line pressure and demand and we will confirm the flow from the datasheet curve on request before you order.
The blank drain code on this model is the differential-pressure type, the catalogue default for the GFR family. If you prefer condensate to eject automatically above a pressure threshold, order the A (automatic) code; for fully hands-on draining, order M (manual). The same 400 frame is available in each drain type.
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.