The AirTAC GFR400C10MLJNTK AirTAC Filter Regulator 3/8 in NPT 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 GFR400C10MLJNTK is a 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 threaded 3/8 in NPT, carries the standard 40 um filter element, and drains accumulated condensate by hand through its manual drain. It is built as the low-pressure regulator type, comes without a pressure gauge and without a mounting bracket, and has a reverse (check) valve 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. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 in, and options include manual, automatic or differential-pressure drains, a finer 5 um element (code W), gauge choices and G (BSPP) or NPT thread variants. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm sizing and datasheet figures for your application before ordering.
| Model | GFR400C10MLJNTK AirTAC Filter Regulator 3/8 in NPT |
|---|---|
| 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) |
Filter and regulate the 3/8 in supply feeding a bank of air-operated valves on a process skid, with the fitted check valve blocking reverse flow back through the unit.
Supply cleaned, regulated air to the cylinders and grippers that case, seal and divert product along a packaging conveyor, with a quick manual drain-down at the end of a shift.
Provide a low-pressure regulated air feed for bench rigs that leak-test or actuate samples with shop air, where a modest setpoint matters more than high flow.
GFR filter regulators step through sizes 200, 300, 400 and 600, with ports from 1/8 to 1 in; choose the size whose flow curve covers your duty, since flow is published as curves rather than one rating and we will confirm sizing against your application on request. This model drains by hand (code M), so someone must bleed the bowl periodically; automatic (A) and differential-pressure (blank) drains are available if you would rather not schedule that. The element is the standard 40 um grade - select code W for 5 um where finer filtration is needed. This unit is the low-pressure regulator type and its set-pressure range is not published in the material we hold, so confirm it with us against your line pressure. It is coded without a gauge and without a bracket (J); gauges and brackets can be specified on other codes. The thread here is NPT - PT is the catalogue standard thread and G (BSPP) is also an order option.
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, not as a single rated number, so we do not quote a figure here. Send us your inlet pressure, port size and the flow your application needs, and we will confirm the sizing against the datasheet curves before you order.
As coded, GFR400C10MLJNTK is a size 400, 3/8 in NPT low-pressure filter regulator with the standard 40 um element, no gauge, no bracket and a manual drain (M). Related codes in the same size can be ordered with an embedded square gauge or an external round gauge in MPa, psi or bar scales, an automatic (A) or differential-pressure drain, a 5 um element (W), a bracket, or G (BSPP) thread. The set-pressure range for the low-pressure type is not published in our sheet, so confirm it with us for your line conditions.
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.