The AirTAC GFR400C15LF2WK AirTAC Filter Regulator PT1/2, 5 um 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 GFR400C15LF2WK is a size 400 filter regulator: it removes water and particulate from compressed air and regulates downstream pressure in one body. This configuration carries a PT1/2 port, a fine 5 um filter element (code W), a differential-pressure drain that bleeds accumulated condensate automatically as flow passes through, and a low-pressure regulator type for circuits that run below standard working pressures. It is fitted with an embedded square gauge scaled in psi, a reverse/check valve that holds downstream pressure when the upstream supply is lost, and a mounting bracket for secure panel or frame installation.
This is a genuine AirTAC part from the GFR series, which spans sizes 200, 300, 400 and 600 with port sizes from 1/8 to 1 inch, a choice of 40 um standard or 5 um fine filtration, differential-pressure, automatic or manual drains, and gauge, thread and bracket options. Flow is published as curves rather than a single rating, so ask us to confirm the datasheet figures for your application before ordering.
| Model | GFR400C15LF2WK AirTAC Filter Regulator PT1/2, 5 um |
|---|---|
| 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 an assembly fixture where clamps must close gently and hold at a reduced setpoint, the low-pressure regulator type lets the circuit run below standard line pressure, while the 5 um element protects the clamping valves from fine contamination.
Feeding diverters, seal bars and reject pushers on a packaging conveyor, this unit cleans the air to 5 um, holds a steady regulated supply, and the check valve keeps actuators from drifting if the main supply drops mid-cycle.
Where a process skid branches instrument-grade air off a main header, the PT1/2 filter regulator with a psi-scaled gauge gives operators a visible, stable setpoint, and the differential-pressure drain sheds condensate without routine attention.
Size 400 with a PT1/2 port suits lines where larger downstream piping is already in place; step down to size 300 or 200 if your flow demand is modest, since port and body size should follow required flow rather than pipe convenience. The 5 um element (W) is the right choice when downstream valves, cylinders or instruments are sensitive to finer particles; the 40 um standard element is adequate for general shop-air protection. The differential-pressure drain needs no timer or operator attention, but if your compressor cycles heavily or the unit sits upstream of an intermittent demand, ask about automatic or manual drain variants. The low-pressure (L) regulator type is intended for circuits that run below standard working pressures; its exact adjustment range is not published in the material we hold, so confirm it with us against your setpoint. Thread is PT as standard, with G (BSPP) and NPT available as order options, and the square gauge here reads in psi (MPa and bar scales exist on other variants).
Flow for this series is published as curves, not a single rated figure, so we do not quote a number here. Send us your application details and we will confirm sizing and 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 flow for the GFR series as curves, not as a single rated figure, so we do not quote a number here. Send us your application flow and pressure requirements and we will confirm the datasheet curve and correct sizing before you order.
The L in the code marks the low-pressure regulator type, intended for circuits that run below standard working pressures; its exact adjustment range is not published in our material, so confirm it with us against your setpoint. The K adds a reverse/check valve, which holds downstream pressure if the upstream supply is interrupted. The unit also carries a 5 um element, a differential-pressure drain, a square psi gauge and a mounting bracket.
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.