The AirTAC GFR400C10MLJC3WT AirTAC Filter Regulator NPT 3/8 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 AirTAC GFR series combines water and particulate removal with pressure regulation in a single body: air passes through the filter element and then the reducing valve, so one unit both conditions and regulates the supply. This GFR400 configuration is size 400 with 3/8 in NPT ports, the 5 um filter element (code W, the finer of the two catalogue grades), a manual drain on the metal bowl, and the low-pressure regulator type (code L) for circuits that work at lower regulated pressures; the exact adjustment range for the low-pressure type is not published in the catalogue, so we confirm it on request. A round pressure gauge with bar scale is fitted, no mounting bracket is included and no reverse/check valve is fitted. 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. GFR400 is the 400 size within the GFR range, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 in and PT, G(BSPP) or NPT threads. Drain type, filter grade (40 um standard or 5 um), gauge style and scale, bracket and check-valve options can all be selected at order time. AirTAC publishes flow for this series as curves rather than a single rated figure, so ask us to confirm flow and datasheet figures for your application before ordering.
| Model | GFR400C10MLJC3WT AirTAC Filter Regulator NPT 3/8 |
|---|---|
| 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) |
Point-of-use conditioning for the pneumatic cylinders on a carton-forming and sealing line: the 5 um element keeps fine particles out of the machine's valve stack while the regulator holds the supply pressure the actuators are set for, with the bar gauge giving the operator a local reading.
Filtered, regulated air for a lab pneumatic test bench: the 5 um grade suits instruments and small actuators, the low-pressure regulator type matches circuits that run below standard plant pressure, and the manual drain suits a bench that is bled down between sessions.
Regulated air to the low-pressure clamping circuit on a machining fixture, where the operator sets holding pressure at the unit and reads it on the bar gauge; the 3/8 in NPT ports drop straight into the machine's existing supply drops.
Choose the size and port step against the air demand of the circuit: this unit is size 400 with 3/8 in NPT ports, one step in the 200/300/400/600 range that runs from 1/8 to 1 in. Filtration here is the 5 um element (code W) instead of the 40 um standard - pick 5 um where downstream valves, cylinders or instruments are sensitive to fine particles. The manual drain means the metal bowl is emptied by hand on a routine you set; automatic and differential-pressure drains are catalogue alternatives if the unit sits where manual draining is awkward. The round gauge reads in bar; the embedded square gauge and MPa or psi scales are options, and PT or G(BSPP) threads can be ordered instead of NPT. No bracket is included with this code, so plan the mounting if you need one. Because AirTAC publishes flow as curves rather than a single rating, send us your pressure and air-demand conditions 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 series as curves rather than a single rated number, so we do not quote a rated flow figure. Send us your line pressure and air demand and we will confirm the flow from the datasheet for this exact 3/8 in, 5 um, low-pressure configuration before you order.
The W in the code selects the 5 um element, the finer of the two grades offered for GFR filter regulators. Choose it when downstream valves, cylinders or instruments need finer particle removal than general plant air requires; the 40 um element remains the standard choice and either grade can be ordered in any GFR400 configuration.
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.