The AirTAC GFR400C15C2WK 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 GFR400C15C2WK is a size 400 filter regulator that removes water and particulate from compressed air and sets downstream pressure in a single body. This configuration is built with a 1/2 in PT1/2 port, a 5 um filter element for finer filtration than the standard 40 um grade, a differential-pressure drain that bleeds accumulated condensate automatically as flow passes through, and a check (reverse) valve that holds the downstream setting when upstream supply is lost. An external round gauge on a psi scale is fitted so operators can read and adjust the outlet pressure directly. Maximum inlet pressure is 1.0 MPa (145 psi), the standard regulator covers an adjustment range of 0.15-0.9 MPa (20-130 psi), and the unit operates from -5 to 70 C in non-freezing conditions.
This is a genuine AirTAC part from the GFR400 series, one of four sizes (200, 300, 400, 600) with port options from 1/8 in to 1 in and thread choices of PT (standard), G (BSPP) or NPT. Drain type, filter grade, gauge style and scale, and check-valve fitment are all orderable options within the series. Flow is published as curves rather than a single rated figure, so we confirm the exact datasheet and sizing figures on request before you order.
| Model | GFR400C15C2WK 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) |
Feeding spray-booth and paint-pump air drops on a finishing line, where the 5 um element helps keep water carry-over down before the regulator sets a stable outlet pressure for the atomising equipment.
Conditioning the air feeding carton sealers and wrapper cylinders on a packaging line, with the regulator holding a fixed working pressure and the check valve keeping the circuit charged during brief supply dips.
Serving as the filter-regulator stage at the head of a machine's pneumatic manifold, protecting downstream valves and actuators from condensate and particulate while the psi gauge lets maintenance set the branch pressure.
Size 400 with a PT1/2 port sits in the upper half of the GFR range, so step up or down (200/300/400/600) according to the air demand of the line rather than the pipe size alone. This unit already carries the finer 5 um element (code W); if your application tolerates coarser filtration, the 40 um standard grade is available in the same series. Drain options are differential-pressure (fitted here), automatic, or manual - manual drain suits intermittent-duty points, while differential and automatic suit continuously running lines. Gauge style is embedded square (standard) or external round (fitted here, psi scale; MPa and bar scales exist too), and the check valve (code K) is optional where pressure hold-through is needed. Thread is PT as standard; G and NPT are order options. A mounting bracket is included. Because flow is published as curves and not a single rating, 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 series as curves, not as a single rated number, so we do not quote a figure that could be misleading. Tell us your application and required flow, and we will confirm the correct size and the datasheet figures on request before you order.
The W in the code GFR400C15C2WK sets the 5 um filter grade instead of the 40 um standard element, and the K fits a reverse (check) valve that holds the downstream pressure if the upstream supply drops. Both are order options - the same GFR400 body is available with the 40 um grade, without the check valve, and with automatic or manual drain instead of the differential-pressure drain fitted here.
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.