
The AirTAC GFR Filter Regulator GFR400C10MNK 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.
GFR400C10MNK is a genuine AirTAC G-series filter regulator with one extra feature: the K suffix adds a built-in reverse-flow (check) valve, so air passes forward through the unit but cannot push back through it from the downstream side. Compressed air passes a 40 um filter element and collects in the polycarbonate drain bowl (size 400 frame), with water and particulate released through the manual drain; outlet pressure is set anywhere in the 0.05-0.9 MPa (7-130 psi) range. Maximum inlet pressure is 1.0 MPa (145 psi), temperature range is -5 to 70 C (non-freezing), and the connection is a 3/8 in PT port, the standard thread, with G (BSPP) and NPT as catalogue options.
This configuration is ordered without a pressure gauge (N), and a mounting bracket is included. It is a genuine AirTAC part from a series offered in sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in and selectable drain, filter grade, gauge, thread and check-valve options. AirTAC publishes flow as curves rather than a single rating, so send us your line conditions and we will confirm sizing and the datasheet on request.
| Model | Airtac GFR Filter Regulator GFR400C10MNK |
|---|---|
| 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) |
Supply filtered, reduced-pressure air to the stretch-wrapping and pusher cylinders at the end of a palletising line, with the check valve holding the circuit against backflow from the machine side.
Feed the pneumatic clamps and swing cylinders on a manual assembly bench, where the operator sets the clamping pressure once with the knob and drains the bowl during end-of-shift checks.
Provide a clean, regulated pilot-air supply to the positioners and pilot valves on a process skid, with the check valve preventing reverse flow when downstream sections are vented.
Decode the choices: size 400 with a 3/8 in PT port suits mid-range supply piping; step to another size when pipe diameter or air demand changes. The M fixes a manual drain (bowl emptied by hand, best on attended lines); A-coded units drain automatically. The standard 40 um element is fitted here - add W for the 5 um grade. No gauge is included, but round or square gauges with MPa, psi or bar scales can be ordered. The K specifies the reverse-flow (check) valve - choose it where the downstream circuit could momentarily push air back toward the supply side. Thread is PT as standard with G (BSPP) and NPT options, and the bracket is included. Flow is published as curves, not a single rating, so 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 performance as flow curves rather than a single rated number, so no figure is quoted here. Share your inlet pressure, port size and demanded flow, and we will confirm sizing from the datasheet on request.
K means a reverse-flow (check) valve is fitted inside the unit: normal forward flow is unaffected, while backflow from the downstream side is blocked. Everything else decodes as the standard version - 3/8 in PT port, manual drain, 40 um element, no gauge.
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.