The AirTAC GFR40015LC2WTK AirTAC Filter Regulator NPT1/2 Low-Pressure 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 AirTAC GFR40015LC2WTK is a filter regulator: water and particulate removal plus pressure regulation combined in a single body, with a drain bowl but no lubricator. This size 400 unit carries a 1/2 in NPT port (the T code changes the thread from the PT standard; G/BSPP is also orderable). The W code selects the finer 5 um filtration element instead of the 40 um standard, the L code makes it the low-pressure regulator type, and the K code adds a reverse/check valve. An external round gauge with a psi scale is fitted, a mounting bracket is included, and the bowl drains by differential pressure automatically as the element loads.
This is a genuine AirTAC part. The GFR filter-regulator line spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and is configurable by drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um optional), gauge style and scale, thread (PT standard, G or NPT), reverse/check valve and bracket. Maximum working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing. Flow is published as curves rather than a single rated figure, so we confirm flow and datasheet figures on request.
| Model | GFR40015LC2WTK AirTAC Filter Regulator NPT1/2 Low-Pressure |
|---|---|
| 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, 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). |
| C | Gauge shape: Round. 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. |
| 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" · 5 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-15 (two-unit set) |
Feeding pneumatic clamps and hold-down fixtures that must be regulated at low setpoints, with the low-pressure (L) regulator type, 5 um element protecting the valve seats, and the check valve holding downstream pressure.
Conditioning the air supply to packaging line actuators and cylinders, filtering water and particulate to 5 um and regulating pressure in one compact body mounted on the included bracket.
Supplying filtered, regulated air to lab automation and pick-and-place equipment where the finer 5 um grade and a locally readable psi gauge keep the supply clean and setpoint visible at the bench.
Step through the GFR line by size and port: sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in - the larger the size, the larger the port and the greater the flow capacity. This code is the size 400, 1/2 in NPT step. Drain type is a real choice: differential-pressure (the default here, draining as the element loads), automatic, or manual. Filter grade is 40 um standard or 5 um with the W code, which this unit carries. Gauge options are the embedded square gauge or an external round gauge, with MPa, psi or bar scales - this configuration has the round gauge with a psi scale. Thread is PT as standard, with G (BSPP) and NPT as orderable options; this unit is NPT. A bracket is included, and the K code adds a reverse/check valve. Note that this is the low-pressure (L) type: its exact regulation range is not published, so ask us to confirm it against your circuit before ordering. Flow is published as curves, not a single rating, so have us confirm sizing against the application before you order.
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 performance curves rather than a single rated figure, so no single number is quoted here. Send us your line pressure, downstream demand and port details and we will confirm the sizing from the datasheet on request before you order.
The W code selects the optional 5 um filtration element instead of the 40 um standard, for finer protection of downstream components. The K code fits a reverse/check valve so downstream pressure is held if the supply drops. The L code makes this the low-pressure regulator type; its exact regulation range is not published, so we confirm it on request against your setpoint.
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.