The AirTAC GFR400C15C1WTK AirTAC Filter Regulator NPT1/2 with Gauge 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 AirTAC GFR400C15C1WTK is a size 400 filter regulator: it removes water and particulate from compressed air and holds downstream pressure steady in a single body. This configuration is built around a 1/2 in NPT port, a 5 um filter element (the finer of the two catalogue grades), a differential-pressure drain that bleeds collected condensate only when a meaningful pressure drop builds across the element, and a reverse/check valve that holds downstream pressure if the supply drops. A round pressure gauge with an MPa scale is fitted so the set point can be read and adjusted directly, and a mounting bracket is included for panel or wall fixing. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulation range for this drain type is 0.15-0.9 MPa (20-130 psi), and the working temperature range is -5 to 70 C (non-freezing). The bowl on this size is polycarbonate (PC).
This is a genuine AirTAC part from the GFR400 series. Across the G-series, filter regulators are offered in sizes 200, 300, 400 and 600, with port sizes from 1/8 in to 1 in, PT as the standard thread and G (BSPP) or NPT as order options, 40 um or 5 um filtration, differential-pressure, automatic or manual drains, and square or round gauges in MPa, psi or bar scales. Flow for this model is published as curves rather than a single rated figure, so ask us and we will confirm the datasheet figures for your application on request.
| Model | GFR400C15C1WTK AirTAC Filter Regulator NPT1/2 with Gauge |
|---|---|
| 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) |
Feeding clean, pressure-stable air to a CNC machine's pneumatic clamps and tool-change cylinders, where the 5 um element protects fine valves and the check valve holds clamp pressure through a supply dip.
Conditioning the air that drives filler grippers, capper heads and conveyor diverters on a bottling line, with the round MPa gauge letting technicians verify the set point during changeover.
Supplying filtered, regulated air to spray guns and air-assisted applicators in an automotive paint booth, where the 5 um grade reduces particulate carryover and the bracket secures the unit beside the booth.
Size and port are the first decision: the 400 frame with its 1/2 in NPT port suits lines with substantial air demand, while 200/300 cover smaller circuits and 600 covers the largest ports and flows. Match the frame to your flow curve, not to pipe size alone. Drain type is a real choice: differential-pressure (fitted here) drains only under load, automatic drains unattended, and manual drains suit supervised points. Filter grade is 40 um as standard or 5 um as the W option - this unit carries the 5 um element for finer protection. Gauge scale can be ordered in MPa, psi or bar, and the thread can be PT (standard), G (BSPP) or NPT as catalogue options. A bracket can be included or omitted (code J).
One honest note before you order: AirTAC publishes flow for this family as curves, not as a single rated number, so we do not quote a flow figure here. Send us your application details and we will confirm the correct sizing against the datasheet curves before you commit.
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 performance curves rather than a single rated figure, so we do not quote a flow number here. Tell us your application - working pressure, downstream demand and port size - and we will confirm the relevant datasheet curve and sizing on request before you order.
W is the filter grade: this unit carries the 5 um element instead of the 40 um standard. K means a reverse/check valve is fitted, so downstream pressure is held if the upstream supply drops. The T in the code is the thread option - NPT - and C1 specifies the fitted round gauge with an MPa scale.
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.