The AirTAC GFR400C15LF2T 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 GFR400C15LF2T 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, built for circuits that run below standard line pressure, with a 1/2 in NPT port, a 40 um standard filter element, and a differential-pressure drain that bleeds accumulated condensate automatically whenever the pressure differential across the element is high enough. A square pressure gauge scaled in psi is fitted so the set pressure is visible at a glance, and a mounting bracket is included for panel or frame fixing. 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. The bowl on this size is polycarbonate (PC).
This is a genuine AirTAC part. The GFR family is available in sizes 200, 300, 400 and 600 with port sizes from 1/8 in to 1 in, and with choices of drain type (differential-pressure, automatic or manual), filter grade (40 um standard, 5 um with code W), gauge type and scale, thread (PT standard, with G and NPT as order options), and bracket. Flow is published by AirTAC as curves rather than a single rated figure, so we confirm the datasheet and flow figures for your application on request.
| Model | GFR400C15LF2T 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 press or fixture where workpieces are held by air cushions or low-force clamps, the GFR400C15LF2T filters the supply and holds a low regulated set point, with the psi-scaled square gauge letting the setter verify the clamp pressure at the machine.
Packaging lines, case sealers and carton taping heads run continuously on plant air; a size 400 filter regulator with a 1/2 in port conditions that feed, while the differential-pressure drain clears condensate during operation without the operator opening a drain valve each shift.
Air jets, tension rollers and actuated guides on textile, printing or converting lines need clean, steady low-pressure air. This low-pressure-type filter regulator mounted on its included bracket at the point of use keeps water and scale out of the nozzles and holds the jet pressure steady.
Start with the port and size step: this unit is size 400 with a 1/2 in NPT port, one step up from size 300 (3/8 in) and one below size 600 (3/4 in). Choose the size whose flow curve covers your machine's air demand with margin - because AirTAC publishes flow as curves rather than a single rating, ask us to confirm the curve against your application before ordering. This is the low-pressure type (code L), intended for circuits that operate below standard line pressure; the exact regulation range for the low-pressure variant is not published, so confirm it with us if your set point is critical. The 40 um element is the standard grade and suits general pneumatic supply; if finer filtration is needed, the W-coded 5 um grade exists elsewhere in the range. Drain is differential-pressure by default, with automatic (A) and manual (M) variants available. The fitted square gauge reads in psi; round gauges and MPa or bar scales are the other catalogue options. Thread here is NPT (code T); PT is the standard thread and G (BSPP) is also orderable. A 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 GFR400 series as curves, not as a single rated number, so we do not quote a l/min or SCFM figure. Tell us your application and air demand and we will confirm the flow curve and sizing from the datasheet on request before you order.
The L in the code marks the low-pressure variant of the GFR regulator, intended for circuits that run below standard line pressure rather than at full 1.0 MPa inlet. The exact regulation range for the low-pressure type is not published in the catalogue, so if your set point is critical, ask us to confirm it from the datasheet. Gauge scale on this unit is psi; MPa and bar scales are also available as order options.
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.