The AirTAC GFR400C10MLF1TK AirTAC Low-Pressure Filter Regulator NPT3/8 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 GFR400C10MLF1TK is an AirTAC GFR-series filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This size 400 unit is built with a 3/8 in NPT port, a manual drain on the metal bowl, a 40 um filter element, an embedded square gauge scaled in MPa, a reverse/check valve (code K) and a mounting bracket. It is the low-pressure (L) type; its exact adjustment range is not published in the material we hold, so we confirm it on request. Maximum inlet pressure is 1.0 MPa (145 psi) and the working 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 ports from 1/8 to 1 in, and options that include automatic, manual or differential-pressure drains, a 5 um element (code W), psi or bar gauge scales, G (BSPP) or NPT threads in place of the PT standard, and a no-bracket variant. Flow for this family is published as curves rather than a single rated figure, so ask us to confirm sizing and any datasheet figure against your application before ordering.
| Model | GFR400C10MLF1TK AirTAC Low-Pressure Filter Regulator NPT3/8 |
|---|---|
| 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) |
Filtering and regulating the air feeding solenoid valves on a water-treatment or chemical dosing skid, where clean, steady low-pressure supply air keeps actuators cycling smoothly and the manual-drain bowl suits an attended plant.
Supplying filtered, regulated air to pneumatic clamps and small cylinders on a machining or assembly fixture that runs at reduced pressure, with the square MPa gauge giving the setter a local pressure readout at the fixture.
A point-of-use filter regulator on a workshop drop feeding air tools, blow guns and bench actuators, where the metal bowl, built-in gauge and included bracket make it a tidy fit at the end of a supply line.
The real choices in this family are decodable from the code. Size (200/300/400/600) and port (1/8 to 1 in) set the connection and should follow the air demand of your line - we check the published flow curves against your requirement rather than quote a single rating. Drain type matters: this unit is manual (M), so the bowl is drained by hand on a schedule you set; automatic and differential-pressure drains are available on other codes. The 40 um element is standard and a 5 um element (W) is offered when finer filtration is needed. The embedded square gauge on this code reads in MPa; psi and bar scales and an external round gauge are options. Thread is NPT here; PT is the standard and G (BSPP) is also catalogued. A bracket is included, and a no-bracket version (J) exists.
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 GFR-series flow as curves rather than a single rated figure, so we do not quote a number here. Send us your supply pressure and air demand and we will confirm the sizing and the relevant datasheet figures on request before you order.
Code M fits a manual drain: the metal bowl is drained by hand on a schedule you set, which suits attended cells and supervised lines. Automatic (A) and differential-pressure (blank) drains are available on other GFR codes, as is a finer 5 um element (code W).
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.