The AirTAC GFR400C10ALC1TK AirTAC Filter Regulator NPT3/8 Low-Pressure 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 GFR400C10ALC1TK is a size 400 filter regulator: it removes water and particulate from compressed air through a 40 um element and regulates downstream pressure in the same body. This configuration carries an automatic drain, so collected condensate is discharged without manual attention, and it is the low-pressure (L) type for circuits that run below standard regulator settings. It is fitted with an external round gauge scaled in MPa, a reverse/check valve (code K), and includes a mounting bracket. The port is 3/8 inch with NPT thread; max working (inlet) pressure is 1.0 MPa (145 psi) and the operating temperature range is -5 to 70 C (non-freezing).
This is a genuine AirTAC part in the GFR filter-regulator family, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of automatic, manual or differential-pressure drains, an optional 5 um element (code W), square or round gauges with MPa/psi/bar scales, and G/NPT thread options. Flow for this series is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR400C10ALC1TK AirTAC Filter Regulator NPT3/8 Low-Pressure |
|---|---|
| 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) |
Fixture clamp cylinders on an automotive weld cell often hold at reduced line pressure. A low-pressure filter regulator at the fixture drop cleans the supply, holds the set pressure against a check valve, and auto-drains condensate picked up in the header.
Bench-mounted analytical and test instruments fed from a shop-air drop need clean, steady, lower-than-line pressure. This unit filters the supply, regulates it down, and its automatic drain keeps moisture out of the instrument feed without daily attention.
Carton sealers and case packers run air cylinders and vacuum generators continuously. A filter regulator at each machine inlet removes water and grit, keeps actuator pressure stable, and the check valve helps hold the circuit if the main supply dips.
Size 400 with a 3/8 inch port sits in the upper-middle of the GFR range; step up to size 600 or down to 300/200 depending on the flow your line needs - we can check the published flow curves against your demand before you order. The automatic drain on this unit suits unattended duty; choose manual drain where you want operator-controlled discharge or differential-pressure drain where you want discharge tied to a pressure drop. The 40 um element is the standard grade; specify the W code for 5 um where finer particulate removal is required. The round MPa gauge is fitted here; embedded square gauges and psi/bar scales are alternatives. NPT is the thread on this model, with G (BSPP) available as an order option, and the bracket is included. The exact adjustment range of the low-pressure (L) type is not published in the catalogue we use, so confirm it with us if your setpoint is critical.
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. Tell us your application and we will confirm the flow curve and datasheet figures for this exact model on request before you order.
The automatic drain discharges collected condensate on its own, which suits installations that run unattended; manual and differential-pressure drains are the alternatives in the same size. The L code makes this the low-pressure regulator type for circuits set below standard regulator ranges - its exact adjustment range is not published in the catalogue we use, so confirm it with us if your setpoint matters.
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.