The AirTAC GFR400C15LF2 AirTAC Filter Regulator PT1/2 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 GFR400C15LF2 is an AirTAC GFR-series filter regulator: water and particulate filtration plus downstream pressure regulation in a single body. This size 400 configuration carries a PT1/2 (PT thread) port, the standard 40 um filter element, and a differential-pressure drain that bleeds collected condensate automatically whenever the pressure differential across the element rises. It is the low-pressure (L) type, and the code confirms a fitted embedded square gauge reading in psi. Maximum inlet pressure is 1.0 MPa (145 psi) and the working temperature range is -5 to 70 C, non-freezing. The polycarbonate bowl suits this size, and the mounting bracket is included.
This is a genuine AirTAC part. The GFR family spans sizes 200, 300, 400 and 600 with ports from 1/8 to 1 inch, and options include a 5 um element (code W), automatic or manual drains, G (BSPP) or NPT threads, gauge scale choices, a reverse/check valve, and low-pressure regulation. Full flow curves and datasheet figures are not published as a single rating here, so ask us and we will confirm the sizing data for your application on request.
| Model | GFR400C15LF2 AirTAC Filter Regulator PT1/2 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) |
Fixture clamps and swing cylinders on a CNC machining cell that run at reduced holding pressure get clean, regulated air from one compact GFR body ahead of the valve manifold, with the psi gauge giving the operator a direct setpoint readout.
Bagging and cartoning machines with air cylinders and pneumatic diverters use this 1/2-inch filter regulator at the machine drop to strip water and pipe scale from the plant ring and hold a stable, lowered working pressure for gentle product handling.
Instrument and panel builders feeding low-pressure pilot circuits, air relays and positioners mount this low-pressure-type GFR400 inside the cabinet supply line, using the differential-pressure drain and included bracket for tidy, low-maintenance installation.
Start with the port step: size 400 with a PT1/2 port suits lines plumbed at 1/2 inch, and the next size up or down moves you to a larger or smaller port and flow band. Choose the drain to match maintenance access: differential-pressure (as decoded here) needs no daily attention, an automatic drain (A) discharges continuously as condensate collects, and a manual drain (M) is emptied by hand. Filter grade is 40 um standard; specify 5 um (W) only where downstream equipment demands finer filtration. This unit is the low-pressure (L) type, so confirm your working band suits it before ordering. Gauge scale is set by the code (psi here; MPa and bar scales exist on other variants), and PT is the standard thread with G (BSPP) and NPT available as order options. Flow is published as curves rather than a single rated figure, so send us your air demand and we will confirm the correct size against the datasheet before you order.
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, not as a single rated number, so we do not quote a l/min or SCFM figure here. Tell us your air demand and line pressure and we will confirm the correct size from the datasheet curves on request before you order.
The L in the code marks the low-pressure regulator variant, intended for applications where the working pressure sits below the standard regulator band; the exact adjustment range for this variant is not published on our sheet, so ask us to confirm it against the datasheet. The drain is differential-pressure type: condensate collected in the bowl is automatically discharged when the pressure drop across the 40 um element reaches the bleed threshold, with no manual draining needed under normal duty.
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.