The AirTAC GFR400C15F1WTK AirTAC Filter Regulator NPT1/2 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 AirTAC GFR400C15F1WTK is a size 400 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This configuration carries a 1/2 in NPT port, a fine 5 um filter element (the W grade, against the 40 um standard), a differential-pressure drain that bleeds collected condensate automatically as flow passes through, an embedded square gauge scaled in MPa, and a built-in reverse/check valve that holds the regulated circuit if upstream supply is interrupted. A mounting bracket is included. Maximum inlet pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with port options from 1/8 in to 1 in, G (BSPP) and NPT threads alongside the PT standard, manual or automatic drains in place of the differential-pressure default, a 40 um or 5 um element, gauge and scale choices, and an optional low-pressure regulator type. Published flow data appears as curves rather than a single rating, so ask us and we will confirm the sizing figures from the datasheet for your application.
| Model | GFR400C15F1WTK AirTAC Filter Regulator NPT1/2 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) |
Feeds filtered, regulated air to the tool-change cylinders and clamping fixtures on a CNC machining centre, where the 5 um element protects fine spool valves and the check valve holds clamp pressure if the shop supply dips.
Conditions the air feeding diverters, pushers and stop gates along a packaging conveyor line, keeping condensate out of the actuators and holding a steady regulated pressure so product handling stays repeatable through the shift.
Serves the pneumatic press and fastening cylinders in an automotive assembly cell, delivering clean, moisture-reduced air at the set pressure the tooling was engineered around, with the square gauge giving operators a direct MPa reading.
Start with the port step: this unit is size 400 with a 1/2 in NPT port; smaller 200/300 sizes step down to 1/8-3/8 in and size 600 steps up to 3/4-1 in, so match the size to the air demand of the circuit. Choose the drain: differential-pressure (fitted here) needs no attention during flow, an automatic drain (code A) purges at shut-off, and a manual drain (code M) is emptied by hand. Pick the element: 40 um is the standard grade and 5 um (code W, as on this model) suits finer downstream equipment. The square gauge is embedded and MPa-scaled here; psi and bar scales and an external round gauge are alternatives. PT is the standard thread, with G (BSPP) and NPT as catalogue options to order, and a bracket is included unless code J is specified. Flow for this family is published as curves, not a single rated figure, so 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 GFR family as curves rather than a single rated figure, so we do not quote one number. Tell us your application and we will confirm the relevant flow and sizing data from the datasheet on request before you order.
W selects the 5 um filter element instead of the 40 um standard grade. The finer element removes smaller particulate from the air stream, which suits downstream valves, cylinders and instruments that need cleaner air; the regulation function and all other characteristics of this size 400 filter regulator are unchanged.
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.