The AirTAC GFR400C15ALC1WT AirTAC Filter Regulator NPT 1/2 in, 5 um 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 GFR400C15ALC1WT is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and holds downstream pressure at a set point, in a single body. This size 400 unit is threaded NPT 1/2 in, carries a 5 um filter element (the finer of the two published grades), drains its metal bowl automatically, and is the low-pressure regulator type. A round pressure gauge scaled in MPa is fitted, the mounting bracket is included, and the maximum working (inlet) pressure is 1.0 MPa (145 psi) with an operating temperature of -5 to 70 C (non-freezing).
It is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 in to 1 in, and can be ordered with manual or differential-pressure draining, the 40 um standard element, square or round gauges in MPa, psi or bar scales, G or NPT threads in place of the PT standard, and a reverse/check valve. AirTAC publishes flow for this series as curves rather than a single rating, so ask us to confirm sizing figures and the full datasheet for your application.
| Model | GFR400C15ALC1WT AirTAC Filter Regulator NPT 1/2 in, 5 um |
|---|---|
| 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, fixture clamps and swing cylinders run off a branch that must stay clean and hold a steady low set point; this filter regulator conditions that branch, and its 5 um element helps protect the directional valves downstream.
On a cartoning or case-packing line, sealing jaws and gating cylinders cycle continuously; the automatically draining bowl keeps collected condensate out of the circuit without an operator stopping to bleed it by hand.
In a spray-finishing booth, guns and air-driven agitators need filtered air regulated to a modest set point; the low-pressure regulator type and the fitted round MPa gauge make setting and checking the line straightforward.
Choose the size step (200/300/400/600) and port against the flow your line needs - here size 400 with a 1/2 in NPT port suits higher-flow branches. Drain type is a real choice: this unit drains automatically, which suits unattended duty, while manual and differential-pressure draining are order options. Filter grade is 5 um here (code W) versus the 40 um standard. The regulator is the low-pressure type; its adjustment range is not published in the catalogue, so confirm it with us. Gauge style and scale, thread (PT standard, G/NPT optional) and bracket are decodable order choices. Because flow is published as curves rather than a single rating, ask us to confirm sizing against your application before ordering.
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 GFR series as curves rather than a single rated figure, so we do not quote a number here. Send us your application details and we will confirm the flow and the full datasheet figures for this size 400, 1/2 in NPT unit on request.
The automatic drain (code A) expels collected condensate without manual attention, which suits duty where nobody bleeds the bowl daily. The 5 um element (code W) is the finer of the two published grades, versus the 40 um standard, for cleaner air to sensitive valves and tools. Both are order choices within the GFR400 series.
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.