The AirTAC GFR400C15MLF2T 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 AirTAC GFR400C15MLF2T is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in a single body. This configuration is the low-pressure type, fitted for circuits that run at reduced setpoints, with a 1/2 in NPT port, a 40 um standard filtration element and a manual drain bowl you empty by hand as part of routine checks. An embedded square gauge on a psi scale is included so the setpoint can be read directly at the unit, a mounting bracket is supplied, and no reverse (check) valve is fitted. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, a choice of PT (standard), G or NPT thread, manual, automatic or differential-pressure drains, 40 um or 5 um (code W) filtration, gauge and scale options, and low-pressure or standard regulator types. Flow is published as curves rather than a single rated figure, so ask us to confirm the datasheet and sizing figures for your application on request.
| Model | GFR400C15MLF2T 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) |
On a milling or turning cell where workpieces are held by air clamps that must not see full line pressure, this low-pressure type filter regulator conditions the supply, drops it to the clamp circuit's setpoint and strips water and swarf-carried particulate before the clamp valves, with the psi gauge letting the setter verify the clamp pressure at the unit.
On a food or consumer-goods packaging line driving conveyor stops, pushers and gate cylinders from a 1/2 in air drop, this unit filters condensed water and pipe scale out of the supply and holds a steady reduced pressure to the direction valves, with the manual drain emptied during shift-end checks.
On an assembly cell where a robot's gripper manifold and its sensing components need clean, stable air at a reduced setting, this filter regulator installed ahead of the manifold removes moisture and particulate at 40 um and lets the integrator set and read the circuit pressure on the built-in square psi gauge.
Start with the port step: this unit is size 400 with a 1/2 in NPT port, one step up from 3/8 in and one below 3/4 in, so match it to the line size and the air demand of the circuit. Because flow is published as curves and not as a single rating, send us your application details and we will confirm sizing against the datasheet before you order. The low-pressure type is the right choice where the circuit runs at reduced setpoints; the exact adjustment range for this variant is not published, so confirm it with us. Drain choice matters: this unit has a manual drain, which suits attended installations where an operator can bleed the bowl; choose automatic or differential-pressure drain codes if the unit will be left unattended. Filtration is 40 um standard, with 5 um (code W) available where finer protection is needed. The embedded square gauge here reads in psi; MPa and bar scales and an external round gauge are alternatives. PT is the standard thread for the series, with G and NPT as order options - this unit is specified with NPT. A mounting bracket is included.
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 l/min, m3/h or SCFM number. Send us your line pressure, setpoint and air demand and we will confirm the sizing from the datasheet on request before you order.
The M in the code specifies a manual drain: moisture collected in the bowl is released by hand during routine checks, which suits attended installations. The GFR series also offers an automatic drain (code A) and a differential-pressure drain (the default, blank code) for unattended duty - ask us to quote those variants if that suits your installation better.
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.