The AirTAC GFR400C15MLF1T AirTAC Filter Regulator NPT1/2 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 GFR400C15MLF1T is an AirTAC GFR400 filter regulator: one body that removes water and particulate from compressed air and then regulates its pressure. This configuration takes a 1/2 in NPT port at size 400, carries the standard 40 um filter element, and drains its polycarbonate bowl by hand (code M). The regulator is the low-pressure (L) type, an embedded square gauge with an MPa scale is fitted, and a mounting bracket is included; no reverse/check valve is fitted. Maximum 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. The GFR family runs from size 200 to 600 with ports from 1/8 to 1 in, and the same body can be ordered with automatic or differential-pressure drains, a 5 um element (code W), psi or bar gauge scales, an external round gauge, G (BSPP) or NPT threads in place of the PT standard, or without a bracket. AirTAC publishes flow for this series as curves rather than a single rated figure, and the adjustment range of the low-pressure type is not listed in the catalogue, so ask us and we will confirm the datasheet figures for your application.
| Model | GFR400C15MLF1T AirTAC Filter Regulator NPT1/2 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) |
Point-of-use conditioning for a stamping or assembly press circuit: the 40 um element strips water and pipe scale before the low-pressure regulator holds a reduced, stable supply pressure to the press cylinders, with the MPa gauge giving the setter a visible setpoint.
Feeding sorting, clamping and wrapping actuators on a packaging conveyor from a 1/2 in drop: the manual-drain bowl is emptied during scheduled shift checks, and the square gauge lets operators see at a glance that the line pressure has not drifted.
Conditioning supply to pilot valves and transducers on a pilot plant or process skid, where filtration without an oil-mist lubricator is wanted and the low-pressure regulator trims the circuit down from the main header pressure.
Choose the size by port and flow: size 400 with a 1/2 in port sits in the middle of the GFR range (200/300/400/600), and the right step depends on the flow your line needs - we can check the published curves against your demand before you order. Drain is a real choice on this family: manual (this unit, emptied by hand on a maintenance round), automatic, or the differential-pressure default. The filter element is 40 um as standard; specify W for the 5 um grade where finer particulate protection is needed. The fitted square gauge reads in MPa, and psi or bar scales (plus an external round gauge) are order options.
Thread: PT is the AirTAC standard and G (BSPP) or NPT are catalogue options - this unit is ordered with NPT. A bracket is included on this code; J deletes it. The L-type regulator is the low-pressure version, and its exact adjustment range is not published, so confirm it with us. No flow figure is quoted as a rating because AirTAC publishes flow only as curves - 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 GFR400 as curves rather than a single rated figure, so no flow number is quoted here. Send us your inlet pressure, downstream demand and allowable pressure drop, and we will confirm the sizing from the datasheet before you order.
The M in the code specifies a manual drain: the bowl is emptied by hand, which suits duties covered by a regular maintenance round; automatic and differential-pressure drains are available in the same size. The L in the code is the low-pressure regulator type, and its exact adjustment range is not published in the catalogue, so we confirm it on request. The standard 40 um element can be swapped for the 5 um grade (code W) at order time.
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.