
The AirTAC GFR Filter Regulator GFR400C10MF1WK 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 GFR400C10MF1WK is an AirTAC G-series filter regulator combining a fine 5 um filter element (W code) with a built-in reverse (check) valve (K code): water and particulate removal, pressure regulation and backflow prevention in one body. This configuration is the 400 size with a 3/8 in PT port and a manual drain you open by hand to empty the bowl. An embedded square gauge on an MPa scale shows the regulated pressure, the adjustment range is 0.05-0.9 MPa (7-130 psi), maximum inlet pressure is 1.0 MPa (145 psi), and the working range is -5 to 70 C, non-freezing. The 400-size bowl is polycarbonate (PC).
This is a genuine AirTAC part from the G-series 200/300/400/600 size range, with catalogue options across port sizes, thread types (PT standard, with G and NPT as orderable variants), drain types, the 40 um and 5 um filter grades, gauges and the K check-valve code. Series flow is published as performance curves rather than a single rated figure, so we confirm sizing and full datasheet figures on request.
| Model | Airtac GFR Filter Regulator GFR400C10MF1WK |
|---|---|
| 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) |
Feed the pneumatic actuators on a process valve skid with fine-filtered, regulated air, with the check valve helping hold the setpoint if the supply header dips.
Supply the clamping fixtures on a precision machining fixture with clean, regulated air, keeping fine particulate out of the small control valves downstream.
Provide filtered, regulated air to the pneumatic portion of a hydraulic-pneumatic test rig, with hand draining of the bowl between test campaigns.
Choose the size and port on the 200/300/400/600 ladder; this 400 body carries a 3/8 in PT port. Two codes matter here: W selects the 5 um fine element instead of the 40 um standard, and K fits the reverse/check valve so downstream pressure is held against backflow. Drain is manual (M), with automatic and differential-pressure variants available; manual drain gives the wider 0.05-0.9 MPa (7-130 psi) adjustment range. The square gauge reads in MPa, with psi/bar scales and an external round gauge as options. Thread is PT standard, G (BSPP) and NPT orderable; J omits the bracket. Flow is published as curves, not 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 G-series capacity as performance curves rather than a single rated-flow figure, so we do not state a number here. Send us your line pressure and air demand and we will confirm sizing and the curve figures from the datasheet on request.
W selects the 5 um fine filter element instead of the 40 um standard, for cleaner air to sensitive downstream equipment. K specifies a built-in reverse (check) valve that blocks backflow and helps hold the regulated downstream pressure if the supply drops. Drop either letter to order the same 400-size, 3/8 in PT body without that feature.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business 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.