The AirTAC GFR400C10AJNT AirTAC Filter Regulator, NPT3/8, Auto Drain 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 GFR400C10AJNT is an AirTAC GFR-series filter regulator: one body that removes water and particulate from compressed air and then regulates downstream pressure. This size 400 unit is supplied with a 3/8 in NPT port, an automatic drain that ejects collected condensate without manual attention, and the standard 40 um filter element. The standard regulator covers a setting range of 0.15-0.9 MPa (20-130 psi) against a maximum inlet pressure of 1.0 MPa (145 psi). No gauge is fitted with this configuration and no mounting bracket is included. The polycarbonate bowl suits non-freezing installations from -5 to 70 C.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600, with a choice of automatic, manual or differential-pressure drain, a 5 um element option (code W), gauge and scale options, and PT, G or NPT threads. Flow figures are published as curves rather than a single rating, so ask us to confirm sizing and the full datasheet for your application before ordering.
| Model | GFR400C10AJNT AirTAC Filter Regulator, NPT3/8, Auto Drain |
|---|---|
| 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) |
On a beverage filling line, gripper and lift cylinders need air that is free of condensed water and held at a stable, repeatable pressure so bottle handling stays consistent shift after shift. A filter regulator at each drop feeds exactly that.
Parcel-sorting conveyors fire diverters and pushers hundreds of times an hour. Filtering and regulating the air at the conveyor drop protects the directional valves from grit and water and keeps divert pressure where the mechanism was set up to run.
A laboratory or QA bench rig cycling pneumatic actuators needs clean, regulated air so test results reflect the device under test, not supply drift. A filter regulator at the bench inlet provides both duties in a single connection.
Start with the port step: size 400 carries a 3/8 in port, one step up from the 1/4 in of size 300 and below the 1/2 in of larger frames - match it to your piping and the air demand of the circuit. Choose the drain to suit access: automatic (this unit) suits enclosed or infrequently visited installations, manual suits attended stations, and the differential-pressure default drains only when the pressure drop warrants it. The standard element is 40 um; specify the 5 um grade (code W) where finer pre-filtration is needed. This configuration ships without a gauge or bracket; gauges with MPa, psi or bar scales and brackets can be selected in other codes. PT is the standard thread, with G and NPT as order options - this unit is the NPT version. Because flow is published as curves rather than a single rated figure, 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 flow for the GFR series as curves, not as a single rated figure, so we do not quote a number here. Tell us your working pressure and air demand and we will confirm the correct size from the datasheet curves on request before you order.
The A in the code selects the automatic drain, which expels collected condensate on its own - useful where the unit sits in an enclosed cabinet or a rarely attended corner of the plant. Manual drain suits stations an operator passes daily, and the differential-pressure default drains only when the element loading justifies it. All three are available across the GFR range.
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.