The AirTAC GFR400C15AC1T AirTAC Filter Regulator NPT1/2 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 GFR400C15AC1T is an AirTAC GFR400 filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This configuration is the size 400 unit with a 1/2 in NPT thread, the standard 40 um filter element, an automatic drain that expels collected condensate without manual attention, and a fitted round pressure gauge scaled in MPa. The standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), with a maximum inlet pressure of 1.0 MPa (145 psi) and an operating temperature range of -5 to 70 C (non-freezing).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with a choice of port sizes, PT, G or NPT threads, differential-pressure, automatic or manual drains, a 5 um (code W) filter element option, gauge style and scale, and a reverse/check valve option. Flow figures are published as curves rather than a single rating, so ask us to confirm the datasheet and sizing for your application.
| Model | GFR400C15AC1T AirTAC Filter Regulator NPT1/2 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) |
Feeding filtered, regulated air to a workshop pneumatic press or clamp cylinder circuit, where the automatic drain keeps condensate off the valve stack and the MPa gauge lets operators set and check working pressure at a glance.
Conditioning the 1/2 in air supply to carton-sealer or case-packer actuator circuits, removing water and pipe scale before the directional valves while holding a stable set pressure for consistent jaw and pusher action.
Mounted on a valve-actuation panel in a process plant, filtering and regulating the air to quarter-turn actuator positioners, with the automatic drain and round MPa gauge supporting unattended, verifiable supply pressure.
Start with the port and size step: this unit is size 400 with a 1/2 in NPT thread, the largest step below size 600, so match it to the line size and the flow your circuit needs. Choose the drain to suit access: automatic (this unit) suits installations that are not checked daily, manual suits attended stations, and differential-pressure is the default. Filter grade is 40 um standard; specify 5 um (code W) where finer protection is needed. Gauge style and scale are selectable, and PT is the standard thread with G and NPT as order options. A bracket is included on this unit. Because flow is published as curves rather than a single rating, 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 G-series flow as performance curves rather than a single rated figure, so no rated flow, Cv or SCFM number is quoted here. Tell us your line size and application and we will confirm the flow data from the datasheet on request before you order.
The A in the code specifies an automatic drain, which expels collected condensate from the bowl without anyone opening it - useful for units mounted high or on lines that are not checked daily. The alternative codes are manual drain (M) and the differential-pressure drain, which is the default. The drain choice also affects the regulator adjustment range quoted in the catalogue, so confirm the variant that matches your maintenance routine.
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.