AirTAC GFR400-10 Filter Regulator (GFR40010LJN)
The AirTAC AirTAC GFR400-10 Filter Regulator (GFR40010LJN) 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 PT3/8" 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.
- TypeFilter regulator
- Port sizePT3/8"
- Regulating range0.15 - 0.9 MPa (20 - 130 psi)
- Filtering grade40 µm
- DrainDifferential-pressure drain
- Bowl materialPC
- Pressure gaugeNot fitted
- ThreadPT
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the AirTAC GFR400-10 Filter Regulator (GFR40010LJN)
GFR40010LJN is a genuine AirTAC GFR400 filter regulator, combining a 40 um filter element with pressure regulation in one body fitted with a differential-pressure drain bowl. The L suffix identifies the low-pressure regulator type, intended for circuits where the regulated setting stays below the pressures handled by standard-type units. The N suffix means no pressure gauge is fitted and J means no mounting bracket is supplied; the port is PT3/8 and maximum inlet pressure is 1.0 MPa (145 psi) over a -5 to 70 C range.
AirTAC builds the G series in sizes 200, 300, 400 and 600, from 1/8 in to 1 in ports, with G (BSPP) and NPT thread versions as catalogue options. Flow is published as characteristic curves rather than one rated figure, so we confirm the datasheet and flow figures for your duty on request.
AirTAC GFR400-10 Filter Regulator (GFR40010LJN) Technical Specifications
| Model | AirTAC GFR400-10 Filter Regulator (GFR40010LJN) |
|---|---|
| Series | GFR400 filter regulator |
| Port size | PT3/8" (PT thread) |
| Filtering grade | 40 µm |
| Regulating range | 0.15 - 0.9 MPa (20 - 130 psi) |
| Pressure type | Low-pressure 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 | Not fitted |
| 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. The low-pressure type adjusts over a lower band than standard; we confirm the exact figures from the factory datasheet. 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.
Model Code: AirTAC GFR400-10 Filter Regulator (GFR40010LJN)
| GFR400 | G-series filter regulator, 400 body — sets the port range. |
|---|---|
| 10 | Port size PT3/8". 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)). |
| L | Low-pressure type. Blank is standard, L is the low-pressure type. |
| J | Supplied without bracket. |
| N | No pressure gauge (N). |
| (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.
Size Class
- GFR200PT1/8" - PT1/4"
- GFR300PT1/4" - PT1/2"
- GFR400PT3/8" - PT1/2"
- GFR600PT3/4" - PT1"
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 · PT3/8" · 40 µm |
|---|---|
| One size down | GFR300 |
| One size up | GFR600 |
| Add lubrication | GFC400-10 (two-unit set) |
Where the AirTAC GFR400-10 Filter Regulator (GFR40010LJN) Is Used
Small assembly press air prep
Bench-top pneumatic presses and arbor presses take their downstroke air through this unit, which strips bulk water from shop air and holds a low, repeatable setting on the 3/8 in feed to the press cylinder.
Pick-and-place gantry supply
Light pick-and-place gantries and vacuum-assist manipulators run best on reduced, clean air; this filter regulator conditions the 3/8 in branch feeding the gantry's lift and grip actuators.
Control panel actuation branch
Where a control cabinet drives remote pneumatic logic, this unit filters and reduces the 3/8 in supply to the panel's valve manifold, keeping the standard 40 um grade ahead of general-duty spool valves.
Is the AirTAC GFR400-10 Filter Regulator (GFR40010LJN) the Right Unit?
This code pairs the size 400, 3/8 in step with the standard 40 um element, which suits general plant air where only bulk water and larger particles need removing before regulation. Choose a W-suffix code instead if finer 5 um filtration is required downstream. There is no gauge in this configuration; add a gauge-code variant if the regulator will be set visually at the panel. The differential-pressure drain is automatic in operation relative to flow, while dedicated automatic (A) and manual (M) drain codes exist for other duties. J means plan for your own bracket if panel support is needed. Thread is PT as standard; G (BSPP) and NPT are separate catalogue order codes. Since AirTAC publishes flow only as curves, ask us to confirm sizing against the datasheet before ordering, along with the adjustment range of the low-pressure L type.
Quick checklist
- ✓ Body size for your peak flow (PT3/8" here)
- ✓ Element 40 µm or 5 µm
- ✓ Drain sets the regulating band
- ✓ Gauge fitted, shape and scale
- ✓ Thread PT, G (BSPP) or NPT
- ✓ Oil needed downstream? Use GFC instead
Installation & Maintenance Notes
- check Mount vertically, bowl down, following the airflow arrow.
- check One body does the filtering and the regulating — no separate regulator needed.
- check Keep inlet pressure at or below 1.0 MPa (145 psi).
- check Adjust only within 0.15 - 0.9 MPa (20 - 130 psi).
- check Drain condensate before the bowl fills.
- check Keep the unit above freezing (-5 to +70 °C, unfreeze).
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 GFR400-10 Filter Regulator (GFR40010LJN) FAQ
The flow figure is not published as a single rating - AirTAC provides characteristic curves for the G series. Send us your supply pressure and air consumption and we will confirm the right size from the datasheet on request.
This code uses the default differential-pressure drain, which bleeds collected condensate as flow passes through the bowl. Codes with A fit a fully automatic drain and codes with M a manual drain, so choose the drain type that matches how often the unit runs unattended.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for AirTAC GFR400-10 Filter Regulator (GFR40010LJN)
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.