The AirTAC GFR400C15LF2WTK AirTAC Filter Regulator 1/2 in NPT 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 See datasheet 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 GFR400C15LF2WTK is an AirTAC GFR400 filter regulator: water and particulate filtration plus pressure regulation combined in a single body for compressed air. This configuration is built around a 1/2 in NPT port, a 5 um filter element (the W grade, finer than the 40 um standard), a differential-pressure drain, and the low-pressure regulator type. A square pressure gauge reading in psi is fitted, a reverse/check valve is included, the filter section has a metal bowl, and a mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200 to 600 with ports from 1/8 in to 1 in, and options that include automatic or manual drains, a 40 um or 5 um element, gauge scales in MPa, psi or bar, and PT, G or NPT threads. Flow for this series is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application on request.
| Model | GFR400C15LF2WTK AirTAC Filter Regulator 1/2 in NPT |
|---|---|
| Series | GFR400 filter regulator |
| Port size | See datasheet (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Standard 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 — factory standard, Factory standard 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. Standard type, regulating 0.15 - 0.9 MPa (20 - 130 psi). 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. |
|---|---|
| C1 | Port size See datasheet. 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)). |
| (blank) | Standard type. Blank is standard, L is the low-pressure type. |
| (blank) | Mounting bracket included. |
| (blank) | Pressure gauge fitted (blank). |
| (blank) | Gauge shape: Factory standard. C is round, F is square. |
| (blank) | Gauge scale: Factory standard. 1 is MPa, 2 is psi, 3 is bar. |
| (blank) | Filtering grade 40 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 · See datasheet · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-C1 (two-unit set) |
On a CNC machining cell, this unit filters the shop air and holds a low regulated pressure to the clamp cylinders, so parts stay held consistently through every cycle.
Feeding sealers, diverters and pusher cylinders on a packaging conveyor, the 5 um element catches fine particulate, condensed water drains by differential pressure, and the regulator sets the low working pressure the actuators need.
On a paint or coating line where atomizing air must sit below normal line pressure, the low-pressure regulator type lets operators set a gentle, repeatable setting right at the point of use.
Everything about this unit is decodable from the code. Step through sizes 200, 300, 400 and 600 to match the port and the flow your line needs - here that is size 400 with a 1/2 in NPT port. Drains come as differential-pressure (this unit), automatic (A) or manual (M); filter grade is 40 um standard or 5 um with the W code (this unit). Gauges are an embedded square gauge (this unit, psi scale) or an optional external round gauge, with MPa, psi or bar scales. Thread is PT as standard, with G and NPT as order options - this unit is NPT. A bracket is included unless the J code removes it. Because flow is published as curves rather than a single rating, send us your application details and we will confirm sizing against the datasheet before you order.
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 series as curves, not as a single rated figure, so we do not quote a number here. Tell us your application and we will confirm the flow and datasheet figures for this exact model on request.
The W code selects the 5 um element instead of the 40 um standard, for finer particulate removal upstream of sensitive equipment. The drain is the differential-pressure type, the default: it discharges collected water when the pressure differential across the filter rises. Automatic (A) and manual (M) drains are available as order options.
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.